Relevant bibliographies by topics / Brain hemisphere differences

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Brain hemisphere differences'

Author: Grafiati
Published: 4 June 2021
Last updated: 15 February 2022

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Journal articles on the topic "Brain hemisphere differences"

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Miller, Michael B., Alan Kingstone, and Michael S. Gazzaniga. "Hemispheric Encoding Asymmetry is More Apparent Than Real." Journal of Cognitive Neuroscience 14, no. 5 (July 1, 2002): 702–8. http://dx.doi.org/10.1162/08989290260138609.

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Previous neuroimaging studies have claimed a left hemisphere specialization for episodic “encoding” and a right hemisphere specialization for episodic “retrieval.” Yet studies of split-brain patients indicate relatively minor memory impairment after disconnection of the two hemispheres. This suggests that both hemispheres are capable of encoding and retrieval. In the present experiment, we examined the possible limits on encoding capacity of each hemisphere by manipulating the “depth” of processing during the encoding of unfamiliar faces and familiar words in the left and right hemispheres of two split-brain patients. Results showed that only the left hemisphere benefited from deeper (more elaborate) encoding of familiar words, and only the right hemisphere benefited from deeper encoding of unfamiliar faces. Our findings are consistent with the view that hemispheric asymmetries in episodic encoding are related to hemisphere-specific processing of particular stimuli. Convergent with recent neuroimaging studies, these results with split-brain patients also suggest that these hemispheric differences are not due to unique specializations in each half brain for encoding memories, but rather, are due to preferential recruitment of the synaptically closer prefrontal cortex to posterior regions processing material-specific information.
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Metcalfe, Janet, Margaret Funnell, and Michael S. Gazzaniga. "Right-Hemisphere Memory Superiority: Studies of a Split-Brain Patient." Psychological Science 6, no. 3 (May 1995): 157–64. http://dx.doi.org/10.1111/j.1467-9280.1995.tb00325.x.

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Six experiments explored hemispheric memory differences in a patient who had undergone complete corpus callosum resection The right hemisphere was better able than the left to reject new events similar to originally presented materials of several types, including abstract visual forms, faces, and categorized lists of words Although the left hemisphere is capable of mental manipulation, imagination, semantic priming, and complex language production, these functions are apparently linked to memory confusions—confusions less apparent in the more literal right hemisphere Differences between the left and right hemispheres in memory for new schematically consistent or categorically related events may provide a source of information allowing people to distinguish between what they actually witnessed and what they only inferred
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Shibahara, Naoki, and Brennis Lucero-Wagoner. "Hemispheric Asymmetry in Accessing Word Meanings: Concrete and Abstract Nouns." Perceptual and Motor Skills 94, no. 3_suppl (June 2002): 1292–300. http://dx.doi.org/10.2466/pms.2002.94.3c.1292.

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The present experiments investigated hemispheric differences in the brain in accessing concrete and abstract word meanings. For this purpose, an automatic semantic priming paradigm was used with a short stimulus onset asynchrony between prime and target (250 msec.) as well as a low proportion of related trials. (20%). Analysis showed that for concrete nouns, priming effects were observed in both hemispheres. There was greater priming in the right hemisphere, suggesting hemispheric differences in accessing semantic representations of concrete nouns. For abstract nouns, on the other hand, priming patterns in the right hemisphere were identical to those in the left hemisphere, suggesting that information about abstract nouns projected to the right hemisphere may be transferred to the dominant left hemisphere for further processing.
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Wang, Bin, Qionghui Zhan, Ting Yan, Sumaira Imtiaz, Jie Xiang, Yan Niu, Miaomiao Liu, Gongshu Wang, Rui Cao, and Dandan Li. "Hemisphere and Gender Differences in the Rich-Club Organization of Structural Networks." Cerebral Cortex 29, no. 11 (February 27, 2019): 4889–901. http://dx.doi.org/10.1093/cercor/bhz027.

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AbstractStructural and functional differences in brain hemispheric asymmetry have been well documented between female and male adults. However, potential differences in the connectivity patterns of the rich-club organization of hemispheric structural networks in females and males remain to be determined. In this study, diffusion tensor imaging was used to construct hemispheric structural networks in healthy subjects, and graph theoretical analysis approaches were applied to quantify hemisphere and gender differences in rich-club organization. The results showed that rich-club organization was consistently observed in both hemispheres of female and male adults. Moreover, a reduced level of connectivity was found in the left hemisphere. Notably, rightward asymmetries were mainly observed in feeder and local connections among one hub region and peripheral regions, many of which are implicated in visual processing and spatial attention functions. Additionally, significant gender differences were revealed in the rich-club, feeder, and local connections in rich-club organization. These gender-related hub and peripheral regions are involved in emotional, sensory, and cognitive control functions. The topological changes in rich-club organization provide novel insight into the hemisphere and gender effects on white matter connections and underlie a potential network mechanism of hemisphere- and gender-based differences in visual processing, spatial attention and cognitive control.
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Van Kaam, Ruud C., Michel J. A. M. van Putten, Sarah E. Vermeer, and Jeannette Hofmeijer. "Contralesional Brain Activity in Acute Ischemic Stroke." Cerebrovascular Diseases 45, no. 1-2 (2018): 85–92. http://dx.doi.org/10.1159/000486535.

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Background: The noninjured, contralateral hemisphere is increasingly acknowledged in the process of recovery from acute ischemic stroke. We estimated the value of conventional electroencephalography (EEG) recordings for identifying contralateral hemisphere involvement in relation to functional recovery. Methods: We analyzed 2-min epochs from 21 electrode EEG registrations of 18 patients with acute hemispheric ischemic stroke and compared with 18 age-matched controls. Outcome was dichotomized as good (modified Rankin Scale [mRS] 0–2) or poor (mRS 3–5 or death) at 3 months. Effects of the infarct on the ipsi-and contralateral hemispheres were analyzed by the delta/alpha ratio (DAR) and 2 measures of functional connectivity (magnitude squared coherence [MSC] and weighted phase lag index [WPLI]). Results: DAR was higher in patients than in controls, both in the ipsilateral and in the contralateral hemisphere (median 4.5 ± 6.7 ipsilateral and 2.4 ± 2.0 contralateral vs. 0.5 ± 0.5 in the control group, p < 0.001), indicating robust EEG changes in both lesioned and non-lesioned hemisphere. MSC and WPLI in the alpha and beta frequency bands were lower in patients than in controls in both hemispheres, indicating clear disturbances of functional connectivity (p < 0.05). In the poor outcome group, contralateral MSC and WPLI were lower than in the good outcome group, although these differences did not reach statistical significance. Conclusions: Short conventional EEG measurements show robust changes of brain activity and functional connectivity in both ipsilateral and contralateral hemispheres of patients with acute ischemic stroke. Changes of remote functional connectivity tend to interact with functional recovery. Future studies should estimate predictive values for individual patients and interactions with plasticity enhancing treatments.
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Styopochkina, S. P., L. P. Cherapkina, and V. G. Tristan. "Brain bioelectricity activity of the sportsmen underwent the neurobiofeedback course." Bulletin of Siberian Medicine 9, no. 2 (April 28, 2010): 83–87. http://dx.doi.org/10.20538/1682-0363-2010-2-83-87.

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The EEG analysis of the 26 highly qualified sportsmen shows, that the brain bioelectricity activity is changed by the neurobiofeedback. It relates with the alpha-rhythm and with the greatest neurodynamic changings in the right hemisphere. The after training EEG changings have the sex differences. Everything fields of the right hemisphere and the temporal-occipital field of the left hemisphere of the sportsmen-male and the forward-temporal of left hemisphere and the central-occipital field of both hemispheres of the sportswomen work during the neurodynamic changing.
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Mihkeev, Vladimir Vladimirovich, Vera Vasilievna Marysheva, Boris Nikolaevich Bogomolov, and Lubov Vladislavovna Zhukova-Williams. "EFFECT OF AMINOTHIOL ANTIHyPOXANTS ON INTERHEMISPHERIC ASyMMETRy OF THE bRAIN." Reviews on Clinical Pharmacology and Drug Therapy 10, no. 1 (March 15, 2012): 51–53. http://dx.doi.org/10.17816/rcf10151-53.

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The effect of aminothiol antihipoxants amthizol and its analogue VM-606 on the resistance of the SHR mice males to an acute hypoxia with hypercapnia under conditions of isolated functioning of one of the hemispheres of the brain was studied. Antihypoxic agent amthizol 25 mg/kg increases life time of naïve mice by 46.2%. The drug acted on the sham-operated mice more slightly, increasing of their life only on 28.1% (p<0.01). Administration of amthizol under conditions of functioning of the right hemisphere significantly enhanced (+64.8%) the life time of mice. No antihypoxic effect was registered after administration of amthizol to mice with active left hemisphere: the result was the same as in mice without amthizol. Therefore, antihypoxic effect of amthizol was due to its action on the right (but not the left) hemisphere of the brain. VM-606 possessed more antihypoxic activity in comparison with amthizol. After unilateral cortical inactivation, VM-606 increased life time of mice both in active right and active left hemispheres, but in more degree in active right hemisphere. Thus, interhemispheric differences in resistance of mice to hypoxia with hypercapnia were diminished. Therefore, the differences between amthizol and VM-606 are the followings: amthizol inverts interhemispheric relations in hypoxia whereas VM-606 diminishes them.
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Alù, Francesca, Francesca Miraglia, Alessandro Orticoni, Elda Judica, Maria Cotelli, Paolo Maria Rossini, and Fabrizio Vecchio. "Approximate Entropy of Brain Network in the Study of Hemispheric Differences." Entropy 22, no. 11 (October 27, 2020): 1220. http://dx.doi.org/10.3390/e22111220.

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Human brain, a dynamic complex system, can be studied with different approaches, including linear and nonlinear ones. One of the nonlinear approaches widely used in electroencephalographic (EEG) analyses is the entropy, the measurement of disorder in a system. The present study investigates brain networks applying approximate entropy (ApEn) measure for assessing the hemispheric EEG differences; reproducibility and stability of ApEn data across separate recording sessions were evaluated. Twenty healthy adult volunteers were submitted to eyes-closed resting EEG recordings, for 80 recordings. Significant differences in the occipital region, with higher values of entropy in the left hemisphere than in the right one, show that the hemispheres become active with different intensities according to the performed function. Besides, the present methodology proved to be reproducible and stable, when carried out on relatively brief EEG epochs but also at a 1-week distance in a group of 36 subjects. Nonlinear approaches represent an interesting probe to study the dynamics of brain networks. ApEn technique might provide more insight into the pathophysiological processes underlying age-related brain disconnection as well as for monitoring the impact of pharmacological and rehabilitation treatments.
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Šafhalter, Andrej, Srečko Glodež, and Karin Bakračevič Vukman. "SPATIAL ABILITY, 3D MODELING AND STYLES OF THINKING IN RELATION TO BRAIN HEMISPHERE DOMINANCE." Problems of Education in the 21st Century 54, no. 1 (June 20, 2013): 91–98. http://dx.doi.org/10.33225/pec/13.54.91.

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The progress of neuroscience and the understanding of children's styles of thinking are opening up new teaching styles that take into account differences in individual cognitive perception. Students can be classified into three distinctive perceptive types, according to the pronounced activity of one cerebral hemisphere in their thinking and information processing: left-hemisphere, right-hemisphere, and integrative type that does not exhibit a considerable dominance of one particular hemisphere. The purpose of the research was to establish differences in the 3D modeling encouraged progression of spatial ability between the left-hemisphere, right-hemisphere and integrative types of students. Computerized 3D modeling employed during technical extra-curricular activity in lower secondary school (grades 6 to 9) may affect the spatial ability of students, which according to other studies, appears to be predominantly connected with the right brain hemisphere. Research was conducted among a variety of lower secondary school students across Slovenia aged 11 – 15 years. Data on spatial ability and its development was collected using a hybrid spatial intelligence test conducted on two separate occasions, while assessment of the learning perception type of students – depending on hemispheric dominance – was obtained using a self-evaluation questionnaire. The 3D modeling of technical objects and objects drawn in orthographic or isometric projection was done with the software Trimble SketchUp. Key words: cognitive development, 3D modeling, hemispheric dominance, spatial ability.
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Harrington, Anne. "Nineteenth-century ideas on hemisphere differences and “duality of mind”." Behavioral and Brain Sciences 8, no. 4 (December 1985): 617–34. http://dx.doi.org/10.1017/s0140525x00045337.

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AbstractIt is widely felt that the sorts of ideas current in modern laterality and split-brain research are largely without precedent in the behavioral and brain sciences. This paper not only challenges that view, but makes a first attempt to define the relevance of older concepts and data to present research programs.In the 19th century, there was a body of literature that held that many mental pathologies could be explained by supposing that each individual potentially had two conscious brains. Madness resulted when these begin to interfere with each other or otherwise functioned independently. The left-sided localization of language by Broca in the 1860s complicated matters by showing that the two brain halves functioned differently. Broca argued that functional asymmetry was a reflection of man's capacity to “perfect” himself; soon, the left hemisphere was transformed into the superior, uniquely human side of the brain. Considerable effort then went into seeing how far the functions of the right hemisphere complemented those of the left. The resulting dichotomies of mind and brain interacted—and sometimes also conflicted—with “duality of mind” theories. In the 1880s, the Paris school of neurology helped bring about a revival of interest in these theories with its startling metalloscopy and hemihypnosis experiments.A section of this target article is devoted to the views of Hughlings Jackson. Jackson's physiological/philosophical writings on hemisphere specialization and mental duality largely set him outside of the rest of the 19th-century tradition. The article concludes that at least some of the data gathered in the 19th century might prove useful or interesting to certain investigators today. More important, it asks how far an awareness of the “time-bound” nature of 19th-century concepts should change the way in which one surveys the laterality scene today.
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Dissertations / Theses on the topic "Brain hemisphere differences"

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Harrington, A. "Hemisphere differences and 'Duality of Mind' in nineteenth-century medical science, c. 1860-1900." Thesis, University of Oxford, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.371664.

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Ho, Sai-Keung. "Hemisphere differences in lexical decision and in semantic priming effect: an attempt to expand ourunderstanding of the right hemisphere ability in processing theChinese language." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1987. http://hub.hku.hk/bib/B29782715.

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Kornisch, Myriam. "Estimates of functional cerebral hemispheric differences in monolingual and bilingual people who stutter." Thesis, University of Canterbury. Communication Disorders, 2015. http://hdl.handle.net/10092/10739.

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Purpose: The aim of this research was to examine the relationship between stuttering and bilingualism to hemispheric asymmetry for the processing and production of language. Methods: A total of 80 native speakers of German were recruited for the study, ranging in age from 15 to 58 years. Out of those 80 participants, 40 participants were also proficient speakers of English as a second language (L2). The participants were organised into four speaker groups (20 per group) according to language ability and speech status, consisting of monolinguals who stutter (MWS), monolinguals who do not stutter (MWNS), bilinguals who stutter (BWS), and bilinguals who do not stutter (BWNS). Each of the four groups comprised 12 males and 8 females. All participants completed a battery of behavioural assessments measuring functional cerebral hemispheric asymmetry during language processing and production. The behavioural tests included (1) a dichotic listening paradigm, (2) a visual hemifield paradigm, and (3) a dual-task paradigm. Results: Overall, the results showed no significant differences in language lateralisation between participant groups on the three behavioural tests. However group differences were identified in regard to executive functions on the visual hemifield and dual-task paradigms. Both bilingual groups showed significantly faster reaction times and fewer errors than the two monolingual groups on the visual hemifield paradigm. The bilingual groups also performed similarly on the dual-task paradigm, while the MWS group tended to show greater task disruption. No meaningful relationship was found between stuttering severity and the majority of results obtained for the test conditions. However, all four language modalities were found to correlate significantly with results obtained for the visual hemifield and dual-task paradigms, suggesting that performance on these tests increased with higher L2 proficiency. Conclusion: Although no differences in language lateralisation were found, it appears that bilingualism had a greater influence on functional cerebral hemispheric processing than stuttering. A prevailing finding was that bilingualism seems to be able to offset deficits in executive functioning associated with stuttering. Brain reserve and cognitive reserve are thought to have a close interrelationship with the executive control system. Cognitive reserve may have been reflected in the present study, resulting in a bilingual cognitive advantage. Hence, the results of the present study lend support to previous findings implicating the benefits of bilingualism.
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Errangi, Bhargav Kumar. "Development and application of comparative diffusion tensor imaging (DTI) to examine cross-species differences in the hemispheric asymmetry and age-related decline of brain white matter." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/44919.

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A complete scientific understanding of human nature requires delineation of the neurobiological characteristics underlying the unique features of the human mind. This effort can be facilitated by comparing the human brain with the brains of other living primate species. Humans are more susceptible to neurodegenerative diseases than other primate species, including our closest living primate relatives, the chimpanzees. Comparing age-related changes in brain structure between humans and non-human primates could, therefore, potentially shed light on the neurological basis of this human vulnerability. Further, human brains are lateralized with specialized cognitive and behavioral functions. Comparing the magnitude of hemispheric asymmetries in brain structure between humans and non-human primates can probe insights into this human specific capability and learn more about human evolution. Diffusion weighted MRI protocols were developed for different species, taking into account their neuroanatomical differences. For Chimpanzees, a multi-shot DWI sequence was developed and compared with a single-shot DWI sequence to determine which provided a better quality diffusion data free of acquisition related artifacts. Different simulation techniques were used to evaluate the effect of segmentation-related motion artifact (ghosting) on the multi-shot DTI data. Although both protocols generated high-resolution diffusion MRI data with correctable susceptibility-induced distortions, the single-shot protocol enables the acquisition of the high-resolution diffusion MRI data freed of ghosting and with twice the signal-to-noise ratio (SNR), for the same scan duration. The acquired chimpanzee and macaque diffusion data were used to compare the magnitude of microstructural asymmetries and age-related decline of brain white matter with those in humans. Hemispheric asymmetry results show a pattern of strong leftward asymmetry in human DTI indices that differs markedly from the chimpanzee (multi-shot data) and the rhesus macaque patterns involving both rightward and leftward asymmetries. The magnitude of leftward asymmetry increased for chimpanzees scanned with single-shot DTI sequence. Region of interest analyses within the corpus callosum revealed a significant age-related increase in fractional anisotropy (FA) in the genu for chimpanzees (multi-shot data) and no significant change in any region for macaques. Additionally, voxel-wise analysis using Tract Based Spatial Statistics (TBSS) revealed widespread age-related FA increases for chimpanzees (multi-shot data) and weak age-related decreases in FA for macaques across most white matter tracts. Overall, results from these multi-shot data analyses suggest that rhesus monkeys show age-related decreases in white matter integrity that parallel changes found in humans, whereas chimpanzees show age-related increases in white matter integrity. On the contrary, the single-shot data results for chimpanzees revealed no significant relationship between age and the different DTI indices. These noteworthy species differences may help to explain the unique features of the human mind and why humans are more susceptible to neurodegenerative diseases. Furthermore, these studies demonstrate the need for complementary histological studies of white matter microstructure in humans, chimpanzees and macaques to clarify the cellular and molecular basis of these findings.
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Tang, Ling, and 湯苓. "Hemispheric Differences in Statistical Learning of Non-Adjacent Dependencies: Evidence from Event-Related Brain Potentials." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/33j42d.

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碩士
國立臺灣大學
語言學研究所
106
Increasing number of studies have suggested that statistical learning may play a more fundamental role in supporting language acquisition than previously thought. However, the issue of how the left hemisphere (LH) and the right hemisphere (RH) learn to master the statistical regularities in language is still poorly understood. In view of this, the present study aims to take a critical first step toward understanding how the two hemispheres track statistical regularities. In this study, we targeted Mandarin Chinese native speakers to investigate: (1) are both hemispheres capable of picking up non-adjacent statistical regularities from language-like input? (2) If yes, do the learning trajectories differ between the two hemispheres? And critically, (3) do the two hemispheres rely on mechanisms of different nature to track statistical regularities in language, akin to how syntactic information is processed in the two hemispheres? An ERP experiment with alternate monaural listening mechanism in presenting the materials was conducted in this thesis. In total, forty-seven right-handed young adults without familial sinistrality background (FS-) participated. With the classic artificial language learning paradigm, non-adjacent dependencies were chosen as the learning materials in this experiment. In order to systematically manipulate the transitional probabilities (TP) between test tokens, different numbers of the intervening items were assigned to create three different variability conditions (low, mid, and high). The behavioral results failed to replicate past findings when all participants were considered; nevertheless, if focused on successful learners only, high variability condition indeed best facilitated the learning of non-adjacent dependencies. Alternating training and test phases might be determinant factors contributing to these conflicting findings since the TPs do not exactly meet the goal of the experimental design. The ERP results displayed symmetric brain responses for low and mid variability conditions, with P600 for low and N400 for mid. Only in high variability condition did LH and RH show asymmetric results—left-lateralized P600 effects and right-lateralized N400 effects. These brain responses have proven that both left and right hemispheres have the ability to undergo statistical learning processes; however, only in high variability condition can we see each hemisphere using different processing approach (LH: syntactic processing approach/ RH: lexical association based approach). Finally, together with behavioral results, we think the lateralization of P600 grammaticality effects may be closely linked to the syntactic proficiency of non-adjacent dependencies. These data patterns are based on a relatively small ERP data set, and more data need to be obtained before firmer conclusions can be drawn.
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Books on the topic "Brain hemisphere differences"

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Ouellette, Stephanie. Are there differences in responding to primarily left and right brain hemisphere tasks that are presented monaurally? Sudbury, Ont: Laurentian University, 2006.

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Hermans, Hubert J. M. The Positioning Brain. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190687793.003.0005.

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Recent developments in brain sciences and social psychology lead to a model focused on the communication channels between I-positions, connecting self with other, reason with emotion, and the conscious with the nonconscious as basic polarities of positioning. Emotional and reasoning positions, like conscious and nonconscious positions, are considered as mutually complementing opposites in both self and other. In this model the communication channels are of crucial importance as their features and qualities determine whether the positions are involved in competition or cooperation, conflict or harmony, suppress or support each other, create coalitions or retreat in isolation. A diversity of phenomena are explored, including theory of mind, hemispheric differentiation, empathy, somatic markers, body illusions, racial prejudices, difference between emotion and feeling, and cultural aspects of brain functioning.
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Book chapters on the topic "Brain hemisphere differences"

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Jahagirdar, Vaishali. "Hemispheric Differences: The Bilingual Brain." In Foundations of Bilingual Memory, 257–82. New York, NY: Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4614-9218-4_13.

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Rockstroh, Brigitte, and Werner Lutzenberger. "Differences between Anhedonic and Control Subjects in Brain Hemispheric Specialization as Revealed by Brain Potentials." In Individual Differences in Hemispheric Specialization, 183–94. Boston, MA: Springer New York, 1987. http://dx.doi.org/10.1007/978-1-4684-7899-0_12.

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Miran, Michael, and Esta Miran. "The Evolving of the Homeostatic Brain: Neuropsychological Evidence." In Individual Differences in Hemispheric Specialization, 331–48. Boston, MA: Springer New York, 1987. http://dx.doi.org/10.1007/978-1-4684-7899-0_20.

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Miran, Michael, and Esta Miran. "Individual Differences in Cerebral Lateralization: Homeostatic Brain Functions of Schizophrenics." In Individual Differences in Hemispheric Specialization, 377–92. Boston, MA: Springer New York, 1987. http://dx.doi.org/10.1007/978-1-4684-7899-0_23.

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Gruzelier, John H. "Individual Differences in Dynamic Process Asymmetries in the Normal and Pathological Brain." In Individual Differences in Hemispheric Specialization, 301–29. Boston, MA: Springer New York, 1987. http://dx.doi.org/10.1007/978-1-4684-7899-0_19.

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Schonen, S., C. Deruelle, J. Mancini, and O. Pascalis. "Hemispheric Differences in Face Processing and Brain Maturation." In Developmental Neurocognition: Speech and Face Processing in the First Year of Life, 149–63. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-015-8234-6_13.

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Lanz, Kate, and Paul Brown. "Problem Solvers and Solution Seekers—The Difference Between Intra-compared with Inter-hemispheric Connectivity." In All the Brains in the Business, 63–76. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-22153-9_6.

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Staub, Michael E. "The Politics of Cerebral Asymmetry and Racial Difference." In The Mismeasure of Minds, 79–108. University of North Carolina Press, 2018. http://dx.doi.org/10.5149/northcarolina/9781469643595.003.0004.

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Split-brain theorizing became the lingua franca of the 1970s and 1980s, with the left hemisphere considered the seat of rationality and language while the right hemisphere housed intuition and creativity. Expert and popular writing on cerebral asymmetry came to be directed to society’s privileged, who were encouraged to expand their right-brain potential with yoga, transcendental meditation, and biofeedback. At the same time, a substantial part of debates among neuropsychologists and related medical, social-scientific, and educational professionals revolved around the implications of such a revaluing of right-hemispheric skills specifically for African American, Latino, and Native American children. A remarkable array of experts began to affirm the existence of racial differences in intelligence while taking up a critique that “right-brained” (and often poor and minority) children were trapped in “left-brained” schools. Declaring IQ to be an inaccurate measure, psychologist Alan S. Kaufman in 1979 developed an influential alternative assessment scale specifically to expand what counted as intelligence and to include a range of creative, nonverbal, spatial, and emotional capacities—only to find that gaps in test scores between white and nonwhite children narrowed accordingly.
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Craig, A. D. (Bud). "Feelings and Emotions On Both Sides of the Brain." In How Do You Feel? Princeton University Press, 2014. http://dx.doi.org/10.23943/princeton/9780691156767.003.0008.

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This chapter addresses the different roles of the left and right anterior insular cortex (AIC). It begins by noting evidence that the left AIC and the right AIC were activated asymmetrically in many of the functional magnetic resonance imaging (fMRI) studies mentioned in the preceding chapters. The chapter then details two recent reviews that document a consistent pattern of asymmetric activation of the amygdala and insular cortex, as well as the gender differences that had obscured this pattern. The accumulated evidence from years of work in psychology shows that electroencephalographic activation in the left frontal hemisphere correlates with positive affect and approach motivation, and that activation in the right frontal hemisphere correlates with negative affect, cortisol release, sympathetic arousal, and avoidance motivation. The chapter also describes evidence that supports the opponent inhibition model and the nature of emotional imbalance.
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Ocklenburg, Sebastian, and Onur Güntürkün. "Sex Differences in Hemispheric Asymmetries." In The Lateralized Brain, 289–311. Elsevier, 2018. http://dx.doi.org/10.1016/b978-0-12-803452-1.00011-4.

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Conference papers on the topic "Brain hemisphere differences"

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Daianu, Madelaine, Neda Jahanshad, Emily L. Dennis, Arthur W. Toga, Katie L. McMahon, Greig I. de Zubicaray, Nicholas G. Martin, Margaret J. Wright, Ian B. Hickie, and Paul M. Thompson. "Left versus right hemisphere differences in brain connectivity: 4-Tesla HARDI tractography in 569 twins." In 2012 IEEE 9th International Symposium on Biomedical Imaging (ISBI 2012). IEEE, 2012. http://dx.doi.org/10.1109/isbi.2012.6235601.

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Shealy, Tripp, Mo Hu, and John Gero. "Patterns of Cortical Activation When Using Concept Generation Techniques of Brainstorming, Morphological Analysis, and TRIZ." In ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-86272.

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This paper presents the results of an experimental study comparing cortical activation in the brain when generating solutions using brainstorming, morphological analysis, and TRIZ. Twelve engineering students were given the same three design tasks, respectively, using the three solution generation techniques. Students generated solutions while change in oxygenated blood along the prefrontal cortex (PFC) was measured using functional near-infrared spectroscopy. The results show that generating solutions using brainstorming, morphological analysis, and TRIZ leads to differences in cortical activation, specifically along the region of the brain associated with spatial working memory, cognitive flexibility, and abstract reasoning, called the left dorsolateral prefrontal cortex (left DLPFC). Brainstorming evokes a high average blood oxygenation level dependent (BOLD) response in the left DLPFC early during the solution generation process but this high response is not sustained. In comparison, morphological analysis and TRIZ evoke multiple high average BOLD responses across the solution generation process. Not only was the high average BOLD response sustained but the density of network coordination among brain regions across the PFC was greater for morphological analysis and TRIZ. Higher density is a proxy for higher cognitive effort. The brain regions most central to coordination also varied. During brainstorming the right hemisphere, in a region associated with memory encoding (right PFC), was most activated. During morphological analysis, the left hemisphere, the left DLPFC was most activated. During TRIZ, both the middle and left hemisphere included regions of high activation. These results indicate neuro-cognitive differences of activation patterns, cognitive effort over time, and brain regions central for coordination when using these three concept generation techniques. Future research can begin to explore neuro-cognitive differences as a result of these techniques over multiple uses and the effects of design education.
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3

Шварц, Владислав Александрович, Марина Станиславовна Кудабаева, Илья Леонидович Губский, Дарья Дмитриевна Наместникова, and Марина Юрьевна Ходанович. "LONG-TERM DYNAMIC OF ISCHEMIC LESION VOLUME AND THE BRAIN HEMISPHERES’ VOLUME IN THE MODEL OF FOCAL ISCHEMIA MODEL IN RAT." In Высокие технологии и инновации в науке: сборник избранных статей Международной научной конференции (Санкт-Петербург, Сентябрь 2020). Crossref, 2020. http://dx.doi.org/10.37539/vt187.2020.52.45.003.

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В исследовании изучалась динамика объема ишемического очага и объемов полушарий мозга у животных с локальной ишемией в течении 2 месяцев после ишемии при помощи ручной сегментации. Были выявлены значимые различия между объемами полушарий на 1, 3, 14, 21, 30, 42 день исследования (p<0,01-0,05),, а также резкий рост объема ишемического поражения в течение 1-3 суток, после чего его объем монотонно уменьшался. Ischemic lesion volume and the brain hemisphere volume long-term changes were evaluated during 2 month after focal ischemia in rats using manual segmentation,. Significant differences were identified between hemisphere volumes on the 1st, 3rd, 14th, 21st, 30th, 42nd day after ischemia (p<0,01-0,05). A sharp increase in volume ischemic lesion was identified from the 1st till the 3rd day, then lesion volume constantly decreased.
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Christodoulides, Pavlos, Victoria Zakopoulou, Katerina D. Tzimourta, Alexandros T. Tzallas, and Dimitrios Peschos. "THE CONTRIBUTION OF EEG RECORDINGS TO THE AUDIOVISUAL RECOGNITION OF WORDS IN UNIVERSITY STUDENTS WITH DYSLEXIA." In International Psychological Applications Conference and Trends. inScience Press, 2021. http://dx.doi.org/10.36315/2021inpact077.

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"Dyslexia is one of the most frequent specific learning disorders which has often been associated with deficits in phonological awareness mainly caused by auditory and visual inabilities to recognize and discriminate phonemes and graphemes within words. Neuroimaging techniques like EEG recordings have been widely used to assess hemispheric differences in brain activation between students with dyslexia and their typical counterparts. Although dyslexia is a lifelong disorder which persists into adulthood, very few studies have been carried out targeting in adult population. In this study, we examined the brain activation differences between 14 typical (control group) and 12 university students with dyslexia (experimental group). The participants underwent two tasks consisting of 50 3-word groups characterized by different degrees of auditory and visual distinctiveness. The whole procedure was recorded with a 14-sensor sophisticated wearable EEG recording device (Emotiv EPOC+). The findings from the auditory task revealed statistically significant differences among the two sets of groups in the left temporal lobe in ?, ? and ? rhythms, in the left occipital lobe in ? rhythm, and in the right prefrontal area in ?, ? and ? rhythms, respectively. The students with dyslexia reported higher mean scores only in ? rhythm in the left temporal lobe, and in ?, ? and ? rhythms in the right prefrontal area. Concerning the visual task, statistically significant differences were evident in the left temporal lobe in ?, ? rhythms, in the occipital lobe in ?, ? and ? rhythms, in the parietal lobe in ? rhythm, and in the right occipital lobe in ?, ? and ? rhythms. The students with dyslexia reported higher mean scores only in the ? rhythm of both the left and right occipital lobe. The results indicate that there are differences in the hemispheric brain activation of students with or without dyslexia in various rhythms in both experimental conditions, thus, shedding light in the neurophysiological discrepancies between the two groups. It also lays great emphasis on the necessity of carrying out more studies in adult population with dyslexia."
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Yamamoto, T., T. Hirata, M. Inagaki, R. Kikumoto, Y. Tamao, and S. Okamoto. "EFFECT OF MCI-9038, A SELECTIVE THROMBIN INHIBITOR, ON CEREBRAL MICROCIRCULATION AFTER CEREBRAL ISCHEMIA IN RATS." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643181.

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MCI-9038', a synthetic thrombin inhibitor No. 805, has been shown to be effective for various thrombotic diseases including cerebral thrombosis in acute stage. In this report, we studied the effect of MCI-9038 on disorders of cerebral microcirculation in rats generated by the method of Pulsinelli et al. One day after both vertebral arteries were electrocauterized with electrocautery needle through the alar foramina, bilateral carotid arteries were occluded with Vari-angle aneurythm clips to induce hemispheric ischemia, which was confirmed by electroencepharograms becoming isoelectric. Thirty min. after bilateral carotid artery occlusion, clips were removed to restore carotid blood flow and 5 min. later India ink was infused to detect no-perfusion region. The brain was removed and noperfusion area (NPA) was measured for 10 colonal sections of the brain. While NPA in the control group was 14.6 ± 0.7 % of the total area of 10 colonal sections, MCI-9038 significantly reduced NPA to 5.8 ± 2.1 % at 5 mg/kg i.p. and 6.3 ± 1.3 % at 10 mg/kg i.p. Heparin at 50 and 100 u/kg i.v. and tissue culture urokinase (TCUK) at 48,000 and 96,000 u/kg i.v. did not reduce NPA. Electronmicroscopical observation revealed the platelet aggregates occluding the micro vessels in the region of noperfusion, suggesting that disorders of cerebral microcirculation in this model resulted from the obstruction of blood flow by micro platelet aggregates. MCI-9038 is considered to improve the cerebral microcirculation by the inhibition of the formation of platelet aggregates. Since MCI-9038 does not inhibit platelet aggregation induced by collagen, ADP or arachidonic acid but by thrombin potently, thrombin is considered to take an important role to form the micro platelet aggregates in this model. The difference in the effectiveness between MCI-9038 and heparin is discussed.
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