Relevant bibliographies by topics / Cortical priming

Academic literature on the topic 'Cortical priming'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Cortical priming"

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Brinkhuis, Manje A. B., Árni Kristjánsson, Ben M. Harvey, and Jan W. Brascamp. "Temporal Characteristics of Priming of Attention Shifts Are Mirrored by BOLD Response Patterns in the Frontoparietal Attention Network." Cerebral Cortex 30, no. 4 (November 7, 2019): 2267–80. http://dx.doi.org/10.1093/cercor/bhz238.

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Abstract Priming of attention shifts involves the reduction in search RTs that occurs when target location or target features repeat. We used functional magnetic resonance imaging to investigate the neural basis of such attentional priming, specifically focusing on its temporal characteristics over trial sequences. We first replicated earlier findings by showing that repetition of target color and of target location from the immediately preceding trial both result in reduced blood oxygen level-dependent (BOLD) signals in a cortical network that encompasses occipital, parietal, and frontal cortices: lag-1 repetition suppression. While such lag-1 suppression can have a number of explanations, behaviorally, the influence of attentional priming extends further, with the influence of past search trials gradually decaying across multiple subsequent trials. Our results reveal that the same regions within the frontoparietal network that show lag-1 suppression, also show longer term BOLD reductions that diminish over the course of several trial presentations, keeping pace with the decaying behavioral influence of past target properties across trials. This distinct parallel between the across-trial patterns of cortical BOLD and search RT reductions, provides strong evidence that these cortical areas play a key role in attentional priming.
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Schacter, Daniel L., Gagan S. Wig, and W. Dale Stevens. "Reductions in cortical activity during priming." Current Opinion in Neurobiology 17, no. 2 (April 2007): 171–76. http://dx.doi.org/10.1016/j.conb.2007.02.001.

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Brunel, Nicolas, and Frédéric Lavigne. "Semantic Priming in a Cortical Network Model." Journal of Cognitive Neuroscience 21, no. 12 (December 2009): 2300–2319. http://dx.doi.org/10.1162/jocn.2008.21156.

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Contextual recall in humans relies on the semantic relationships between items stored in memory. These relationships can be probed by priming experiments. Such experiments have revealed a rich phenomenology on how reaction times depend on various factors such as strength and nature of associations, time intervals between stimulus presentations, and so forth. Experimental protocols on humans present striking similarities with pair association task experiments in monkeys. Electrophysiological recordings of cortical neurons in such tasks have found two types of task-related activity, “retrospective” (related to a previously shown stimulus), and “prospective” (related to a stimulus that the monkey expects to appear, due to learned association between both stimuli). Mathematical models of cortical networks allow theorists to understand the link between the physiology of single neurons and synapses, and network behavior giving rise to retrospective and/or prospective activity. Here, we show that this type of network model can account for a large variety of priming effects. Furthermore, the model allows us to interpret semantic priming differences between the two hemispheres as depending on a single association strength parameter.
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Race, Elizabeth A., Shanti Shanker, and Anthony D. Wagner. "Neural Priming in Human Frontal Cortex: Multiple Forms of Learning Reduce Demands on the Prefrontal Executive System." Journal of Cognitive Neuroscience 21, no. 9 (September 2009): 1766–81. http://dx.doi.org/10.1162/jocn.2009.21132.

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Past experience is hypothesized to reduce computational demands in PFC by providing bottom–up predictive information that informs subsequent stimulus-action mapping. The present fMRI study measured cortical activity reductions (“neural priming”/“repetition suppression”) during repeated stimulus classification to investigate the mechanisms through which learning from the past decreases demands on the prefrontal executive system. Manipulation of learning at three levels of representation—stimulus, decision, and response—revealed dissociable neural priming effects in distinct frontotemporal regions, supporting a multiprocess model of neural priming. Critically, three distinct patterns of neural priming were identified in lateral frontal cortex, indicating that frontal computational demands are reduced by three forms of learning: (a) cortical tuning of stimulus-specific representations, (b) retrieval of learned stimulus-decision mappings, and (c) retrieval of learned stimulus-response mappings. The topographic distribution of these neural priming effects suggests a rostrocaudal organization of executive function in lateral frontal cortex.
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Pobric, Gorana, Stefan R. Schweinberger, and Michal Lavidor. "Magnetic Stimulation of the Right Visual Cortex Impairs Form-specific Priming." Journal of Cognitive Neuroscience 19, no. 6 (June 2007): 1013–20. http://dx.doi.org/10.1162/jocn.2007.19.6.1013.

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Recent evidence suggests that priming of objects across different images (abstract priming) and priming of specific images of an object (form-specific priming) are mediated by dissociable neural processing subsystems that operate in parallel and are predominantly linked to left and right hemispheric processing, respectively [Marsolek, C. J. Dissociable neural subsystems underlie abstract and specific object recognition. Psychological Science, 10, 111–118, 1999]. Previous brain imaging studies have provided important information about the neuroanatomical regions that are involved in form-specific and abstract priming; however, these techniques did not fully establish the functional significance of priming-related changes in cortical brain activity. Here, we used repetitive transcranial magnetic stimulation (rTMS) in order to establish the functional role of the right occipital cortex in form-specific priming [Kroll, N. E. A., Yonelinas, A. P., Kishiyama, M. M., Baynes, K., Knight, R. T., & Gazzaniga, M. S. The neural substrates of visual implicit memory: Do the two hemispheres play different roles? Journal of Cognitive Neuroscience, 15, 833–842, 2003]. Compared to no TMS and sham TMS, rTMS of the right occipital cortex disrupted immediate form-specific priming in a semantic categorization task. Left occipital rTMS, on the other hand, had no converse effect on abstractive priming. Abstract priming may involve deeper semantic processing and may be unresponsive to magnetic stimulation of a single cortical locus. Our TMS results show that form-specific priming relies on a visual word-form system localized in the right occipital lobe, in line with the predictions from divided visual field behavioral studies [Marsolek, 1999].
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Voss, J. L., P. J. Reber, M. M. Mesulam, T. B. Parrish, and K. A. Paller. "Familiarity and Conceptual Priming Engage Distinct Cortical Networks." Cerebral Cortex 18, no. 7 (December 1, 2007): 1712–19. http://dx.doi.org/10.1093/cercor/bhm200.

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Hoshino, Osamu, Satoru Inoue, Yoshiki Kashimori, and Takeshi Kambara. "A Hierarchical Dynamical Map as a Basic Frame for Cortical Mapping and Its Application to Priming." Neural Computation 13, no. 8 (August 1, 2001): 1781–810. http://dx.doi.org/10.1162/08997660152469341.

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A hierarchical dynamical map is proposed as the basic framework for sensory cortical mapping. To show how the hierarchical dynamical map works in cognitive processes, we applied it to a typical cognitive task known as priming, in which cognitive performance is facilitated as a consequence of prior experience. Prior to the priming task, the network memorizes a sensory scene containing multiple objects presented simultaneously using a hierarchical dynamical map. Each object is composed of different sensory features. The hierarchical dynamical map presented here is formed by random itinerancy among limit-cycle attractors into which these objects are encoded. Each limit-cycle attractor contains multiple point attractors into which elemental features belonging to the same object are encoded. When a feature stimulus is presented as a priming cue, the network state is changed from the itinerant state to a limit-cycle attractor relevant to the priming cue. After a short priming period, the network state reverts to the itinerant state. Under application of the test cue, consisting of some feature belonging to the object relevant to the priming cue and fragments of features belonging to others, the network state is changed to a limit-cycle attractor and finally to a point attractor relevant to the target feature. This process is considered as the identification of the target. The model consistently reproduces various observed results for priming processes such as the difference in identification time between cross-modality and within-modality priming tasks, the effect of interval between priming cue and test cue on identification time, the effect of priming duration on the time, and the effect of repetition of the same priming task on neural activity.
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Bergerbest, Dafna, Dara G. Ghahremani, and John D. E. Gabrieli. "Neural Correlates of Auditory Repetition Priming: Reduced fMRI Activation in the Auditory Cortex." Journal of Cognitive Neuroscience 16, no. 6 (July 2004): 966–77. http://dx.doi.org/10.1162/0898929041502760.

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Repetition priming refers to enhanced or biased performance with repeatedly presented stimuli. Modality-specific perceptual repetition priming has been demonstrated behaviorally for both visually and auditorily presented stimuli. In functional neuroimaging studies, repetition of visual stimuli has resulted in reduced activation in the visual cortex, as well as in multimodal frontal and temporal regions. The reductions in sensory cortices are thought to reflect plasticity in modality-specific neocortex. Unexpectedly, repetition of auditory stimuli has resulted in reduced activation in multimodal and visual regions, but not in the auditory temporal lobe cortex. This finding puts the coupling of perceptual priming and modality-specific cortical plasticity into question. Here, functional magnetic resonance imaging was used with environmental sounds to reexamine whether auditory priming is associated with reduced activation in the auditory cortex. Participants heard environmental sounds (e.g., animals, machines, musical instruments, etc.) in blocks, alternating between initial and repeated presentations, and decided whether or not each sound was produced by an animal. Repeated versus initial presentations of sounds resulted in repetition priming (faster responses) and reduced activation in the right superior temporal gyrus, bilateral superior temporal sulci, and right inferior prefrontal cortex. The magnitude of behavioral priming correlated positively with reduced activation in these regions. This indicates that priming for environmental sounds is associated with modification of neural activation in modality-specific auditory cortex, as well as in multimodal areas.
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Freigang, Sascha, Shane Fresnoza, Kariem Mahdy Ali, Karla Zaar, Margit Jehna, Gernot Reishofer, Katrin Rammel, Fritz Studencnik, Anja Ischebeck, and Gord von Campe. "Impact of Priming on Effectiveness of TMS in Detecting Language-eloquent Brain Areas in Tumor Patients." Journal of Neurological Surgery Part A: Central European Neurosurgery 81, no. 02 (January 14, 2020): 111–29. http://dx.doi.org/10.1055/s-0039-1698382.

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Abstract Background and Study Aims Language is characteristically human, and preserving it is critical when resecting tumors in language-eloquent brain areas. Navigated repetitive transcranial magnetic stimulation (nrTMS) has been used in recent years as a noninvasive technique to identify preoperatively the language-eloquent cortical areas in tumor patients. An important objective is to increase the sensitivity and specificity of nrTMS in detecting language-related areas and increase the positive correlation of its results to that of intraoperative direct cortical stimulation (DCS). Although the technical aspects of the procedure have received enormous interest, factors related to the targeted cortical area such as previous cortical history or activity have been neglected. Therefore, the present study explores the impact of previous cortical history or activity on the effectiveness of a subsequent nrTMS mapping paradigm. Materials and Methods Twelve right-handed patients with a left hemispheric glioma underwent presurgical nrTMS language mapping and intraoperative language mapping with DCS. nrTMS was performed using a continuous theta burst stimulation paradigm to inhibit possible language relevant areas in the vicinity of the tumor, determined anatomically or based on functional magnetic resonance imaging hotspots. The nrTMS was applied in two separate sessions. One of the sessions randomly included a priming paradigm to precondition the targeted cortical areas. Results Priming stimulation decreased the error detection of the subsequent nrTMS mapping paradigm. This effect was more robust on major types of errors such as speech arrest and hesitation. Conclusion Prior cortical activity as induced by the priming stimulation has a profound impact on the responsiveness to the nrTMS mapping paradigm. Our findings further showed that metaplasticity, a type of homeostatic plastic process, could be elicited even in cortical areas affected by a growing tumor.
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Lavigne, Frédéric, Laurent Dumercy, and Nelly Darmon. "Determinants of Multiple Semantic Priming: A Meta-analysis and Spike Frequency Adaptive Model of a Cortical Network." Journal of Cognitive Neuroscience 23, no. 6 (June 2011): 1447–74. http://dx.doi.org/10.1162/jocn.2010.21504.

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Recall and language comprehension while processing sequences of words involves multiple semantic priming between several related and/or unrelated words. Accounting for multiple and interacting priming effects in terms of underlying neuronal structure and dynamics is a challenge for current models of semantic priming. Further elaboration of current models requires a quantifiable and reliable account of the simplest case of multiple priming resulting from two primes on a target. The meta-analytic approach offers a better understanding of the experimental data from studies on multiple priming regarding the additivity pattern of priming. The meta-analysis points to the effects of prime–target stimuli onset asynchronies on the pattern of underadditivity, overadditivity, or strict additivity of converging activation from multiple primes. The modeling approach is then constrained by results of the meta-analysis. We propose a model of a cortical network embedding spike frequency adaptation, which allows frequency and time-dependent modulation of neural activity. Model results give a comprehensive understanding of the meta-analysis results in terms of dynamics of neuron populations. They also give predictions regarding how stimuli intensities, association strength, and spike frequency adaptation influence multiple priming effects.
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Dissertations / Theses on the topic "Cortical priming"

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Kane, Amy E. "The effect of delay on conceptual and perceptual priming in Alzheimer's disease relationship to attention and cortical activation /." Diss., [La Jolla] : [San Diego] ; University of California, San Diego ; San Diego State University, 2009. http://wwwlib.umi.com/cr/ucsd/fullcit?p3356291.

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Thesis (Ph. D.)--University of California, San Diego and San Diego State University, 2009.
Title from first page of PDF file (viewed July 2, 2009). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 77-83).
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Book chapters on the topic "Cortical priming"

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Sieksmeyer, Jan, Anne Klepp, Valentina Niccolai, Jacqueline Metzlaff, Alfons Schnitzler, and Katja Biermann-Ruben. "Influence of Manner Adverbs on Action Verb Processing." In Language, Cognition, and Mind, 439–61. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-50200-3_20.

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AbstractLanguage-motor interaction is suggested by the involvement of motor areas in action-related language processing. In a double-dissociation paradigm we aimed to investigate motor cortical involvement in the processing of hand- and foot-related action verbs combined with manner adverbs. In two experiments using different tasks, subjects were instructed to respond with their hand or foot following the presentation of an adverb-verb combination. Experiment 1, which prompted reactions via color changes of the stimuli combined with a semantic decision, showed an influence of manner adverbs on response times. This was visible in faster responses following intensifying adverbs compared with attenuating adverbs. Additionally, an interaction between implied verb effector and response effector manifested in faster response times for matching verb-response conditions. Experiment 2, which prompted reactions directly by the adverb type (intensifying vs. attenuating), revealed an interaction between manner adverbs and response effector with faster hand responses following intensifying compared with attenuating adverbs. Additional electroencephalography (EEG) recordings in Experiment 2 revealed reduced beta-desynchronization for congruent verb-response conditions in the case of foot responses along with faster response times. Yet, a direct modulation of verb-motor priming by adverbs was not found. Taken together, our results indicate an influence of manner adverbs on the interplay of language processing and motor behavior. Results are discussed with respect to embodied cognition theories.
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O. Lezcano Velazquez, Brenda, and Guillermo A. Castorena Arellano. "Regional Anesthesia in the Prevention of Chronic Postoperative Pain." In Topics in Regional Anesthesia [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.99530.

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Chronic postsurgical pain (CPSP) develops after a surgical procedure but increases its intensity and persists beyond the healing process without another cause to explain it. The incidence ranges from 5–85%, according to the type of surgery. Patients who develop CPSP may have a protracted ambulation, cardiac and pulmonary complications and increased morbidity and mortality. Several risk factors have been found related to the development of CPSP: female gender, young age, genetic predisposition, and psychosocial problems, hence prevention, early identification and treatment of these factors is essential. Several guidelines recommend the use of multimodal analgesia to treat postoperative pain, and the perioperative management seems to have a preventive role in the development of CPSP. Regional anesthesia (RA) either neuraxial or peripheral nerve blocks, by modulating signaling created by a surgical incision, play a key role in the prevention of CPSP. Local anesthetics have anti-inflammatory properties which decrease sensitization, reduce ectopic firing of neurons, cytokines expression and decrease neutrophil priming. RA reduces pain signals to the spinal cord and supraspinal and cortical nociceptive centers. RA along with other pharmacologic interventions can improve the CPSP as well as the physical and social functionality.
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Martino, Davide, Isaac N. S. Johnson, Alex Medina Escobar, and James F. Leckman. "Neuroimmunoendocrinology of Tourette Syndrome." In Tourette Syndrome, edited by Liana Fasching, Melanie Brady, and Flora M. Vaccarino, 257–76. 2nd ed. Oxford University Press, 2022. http://dx.doi.org/10.1093/med/9780197543214.003.0016.

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Abstract Cellular and molecular mechanisms involving immune-competent cells can modulate normal brain development, influencing the genesis, refinement, and maintenance of neural circuits. There is increasing evidence in support of the contribution of an early immune priming to the abnormal trajectories of maturation of cortico-subcortical circuits associated with the generation of tics. During postnatal life, the hyperreactivity of systemic immune pathways and neuroinflammation may contribute to natural fluctuations of the behavioral features manifesting in Tourette syndrome and related disorders. Moreover, abnormalities in the parallel development of neural and immune systems, as well as in stress responses, are reflected in the higher risk of autoimmune and allergic illnesses in people with these neurodevelopmental disorders. There is still limited knowledge regarding the efficacy of direct and indirect immune-modulatory interventions in the treatment of these disorders. There are also limitations in knowledge of the key molecular pathways associated with gut dysbiosis that can influence neuroimmune interactions in these disorders. This chapter provides an up-to-date summary of the existing knowledge around these themes, highlighting existing gaps that need to be addressed by future research in order to develop breakthrough, disease-modifying, immunological, hormonal, and microbiota-based therapeutic interventions.
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Conference papers on the topic "Cortical priming"

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Khachatryan, Elvira, Nikolay Chumerin, Evelien Carrette, Flavio Camarrone, Leen De Taeye, Alfred Meurs, Paul Boon, Dirk Van Roost, and Marc M. Van Hulle. "Cortical distribution of N400 potential in response to semantic priming with visual non-linguistic stimuli." In 2016 IEEE Statistical Signal Processing Workshop (SSP). IEEE, 2016. http://dx.doi.org/10.1109/ssp.2016.7551795.

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