Дисертації з теми "Size illusions"
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Yoo, Hyun Seung. "Color Illusions on Liquid Crystal Displays and Design Guidelines for Information Visualization." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/36372.
Повний текст джерелаThe influence of color on size and depth perception has been explored for a century, but there is very limited research on interventions that can reduce the color illusions. This study was motivated to identify interventions and propose design guidelines for information visualization, especially where size judgment is critical.
This study replicated the color size illusion and color depth illusion on an LCD monitor and it was found that yellow is the smallest and farthest color among red, yellow, green, and blue on a white background. Three types of interventions (background brightness, border color, and background grid brightness) were tested to identify the conditions that reduce the color illusions, but all of them were not statistically significant.
Based on the experiment results and literature survey, design guidelines were proposed. To extend the guidelines to the bioinformatics field, design recommendations were proposed and implementation examples were illustrated. Evaluations on design implementations were evaluated by interviewing domain experts.
Additionally, the relationship between the color size illusion and the color depth illusion was explored.
Master of Science
Knol, Hester. "Aiming for illusions : the perception of size and its influence on motor control." Thesis, Aix-Marseille, 2016. http://www.theses.fr/2016AIXM4099.
Повний текст джерелаThe influential two-visual streams hypothesis ascribes specific functional roles to the ventral and the dorsal network of the visual system. The ventral system has been hypothesized to process information for conscious perception (vision-for-perception), whereas the dorsal stream processes information for action (vision-for-action). The idea of two separate visual networks in the human brain inspired an enormous amount of research over the past 20 or so years. The results are conflicting and divisive about the idea, causing a seemingly insurmountable gap between supporters and opponents. This thesis aims to unravel a part of the jigsaw puzzle of how perception and action are functioning. The Ebbinghaus figure has been used to distinguish vision-for-perception that is susceptible to visual illusions (i.e., relative size) from vision-for-action that remain unaffected by perceptions of relative sizes. Therefore, we quantified the Ebbinghaus figure based on its geometry and systematically assessed its size illusion. Subsequently, a visuomotor task was implemented in which precision and speed of the voluntary movement were investigated. The description of the visuomotor task and of the perception of Ebbinghaus figures lead to combine both visuomotor task and Ebbinghaus figures. A dynamical model was fit to the experimental data to investigate the effect on the behavioral dynamics.This thesis demonstrated that the ventral stream and dorsal stream are not strictly functionally distinct, and that potentially different informational variables are used for ‘vision for perception’ and ‘vision for action’ irrespective of whether certain variables cause (perceptual) illusions
Yeager, Lauren T. "Assessing Metacognitive Illusions: Fluency, Timing, and Judgments-of-Learning." Bowling Green State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1555583016781281.
Повний текст джерела後藤, 倬男, та Takuo GOTO. "反復観察にもとづく大きさ錯視 (Size illusions)の刺激条件に関する実験的研究". 名古屋大学文学部, 1990. http://hdl.handle.net/2237/10052.
Повний текст джерелаBELLAN, VALERIA. "Body representation, body localisation and body size perception: a study of bodily modulations." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2015. http://hdl.handle.net/10281/69677.
Повний текст джерелаAltini, Enrico. "Tactile perception - Perception of tactile distance changes with body site: a neural network modelling study." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amslaurea.unibo.it/3481/.
Повний текст джерелаGueirard, Ninuwe. "Recherches sur la géométrie de l'espace visuel : le cas particulier de l'appréciation de la distance." Thesis, Aix-Marseille, 2017. http://www.theses.fr/2017AIXM0478.
Повний текст джерелаThis thesis examines the difficulties in estimating the geometrical distance of visual space. Submitted in the field of Philosophy of Perception, this thesis is first discussed from an epistemological standpoint: how does one know that this distance is unknown or unknowable despite being perceived and discussed. The various works of Berkeley serve as a point of depart and establish a speculative framework as Berkeley held that judgment of distance results entirely from experience despite the fact that this distance cannot be seen in a phenomenal way. This thesis examines an essential question supported by this central problem, this time from an ontological position: how is the type of distance to be determined: is it unconsciously visible?tangible? or both visible and tangible at the same time? Can it be categorized in a hyperbolic space, or spherical space, or a strictly Euclidean space, or hyperbolic and spherical at the same time as Euclidean? In support of the thesis and research, various texts and experiences have been examined and contrasted, including those of Berkeley and I. Rock as well as T. Reid and M. Wagner. The goal has been to explore the limits of argumentation and to show what is implicated by these different accounts and assignment of distance in one, versus another, determined space; additionally studying subjects including the experience of the alleys or the so-called the moon illusion, which appeared to be demonstrative examples. In each instance, geometry of visual space and physiological optics confront one another, but at the center of this same fundamental debate is the question of how to define the estimation of distance philosophically?
AlKhars, Mohammed. "Decision Makers’ Cognitive Biases in Operations Management: An Experimental Study." Thesis, University of North Texas, 2016. https://digital.library.unt.edu/ark:/67531/metadc849675/.
Повний текст джерелаSPERANDIO, Irene. "A reaction time approach to size constancy and visual illusions." Doctoral thesis, 2009. http://hdl.handle.net/11562/337445.
Повний текст джерелаSize constancy is a property of the visual perceptural system that can keep relatively constant the perceived size of an object despite changes of the size of the retinal image with distance. The relationship between size and reaction time (RT) is well known: RT is faster in response to larger than smaller stimuli. Here i Wanted to verify whether this effect depends upon retinal or perceived size, by changing both stimulus size and the observer-object distance. I found that when the size of stimuli positioned at a different distance was adjusted so as to subtend the same retinal image, the larger stimuli were responded to faster than the smaller ones. This effect can be attributed to size constancy affecting RT. In keepeing with that, when size constancy cues were removed by using a pinhole for stimulus viewing, RT reflected stimulus retinal size only. In further experiments I employed visual illusion, such as Ponzo's and Ebbinghaus' to induce misperception of size. In accord with the size constancy result, stimuli perceived as larger were responded to faster than those perceived as smaller, despite retinal size was the same. In sum, all these results demonstrate that simple RT reflects perceiver rather than retinal stimulus size.
HUANG, JIAN-HAO, and 黃健豪. "The effect of Chinese wok size on size-weight illusion of cooks." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/13827519478533263115.
Повний текст джерела華梵大學
工業工程與經營資訊學系碩士班
105
The larger of two equally weighted objects is judged to be lighter when lifted. This phenomenon is commonly known as the size-weight illusion. Size-weight illusion could be important for the study of flipping tasks, since any decrease in perceived heaviness accompanying larger woks could lead the cook to exceed the limits of safety. Though size-weight illusion has been studied extensively in experiment psychology, empirical study on flipping tasks until now has not been conducted. Therefore, this study intent to investigate the effects of wok size on the size-weight illusion of stir flipping tasks for Chinese cooks. This study recruited 16 subjects to conduct flipping task, and to investigate the perceived heaviness, perceived volume, and perceived exertion of the different combinations of object size (Diameter of 32, 37, 40 cm) and mass (1.5, 2.1 and 2.4 kg). The mass affects significantly on the perceived heaviness, and perceived exertion however, couldn’t affect significantly on the perceived volume. The effects of the wok size on the perceived heaviness, perceived volume, and perceived exertion is significant. The result showed that the size-weight illusion exists in the Chinese wok. As the volume of the wok’s diameter from 32 to 40 cm, the reports of perceived heaviness decreased 27 % and 13 % repectively for the Chinese wok.
YAK, AMELIE. "Representing the properties of object classes in manipulation and weight perception." Thesis, 2011. http://hdl.handle.net/1974/6799.
Повний текст джерелаThesis (Master, Psychology) -- Queen's University, 2011-09-30 12:51:49.413
White, Justin. "The Influence of Colour on the Size-Weight Illusion: Redefining Expectation." 2010. http://hdl.handle.net/10222/13032.
Повний текст джерела陳佩琳. "Effects of Art Versus Non- Art and Grade on Muller-Lyer Optical Illusion Size." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/93176601411169263846.
Повний текст джерела臺北市立教育大學
視覺藝術學系碩士班
98
The study investigated effects of art versus non-art and grade on Muller-Lyer optical illusion size. An instrument composed of four types of figures (basic-angle/standard, basic-angle/vertical-separate, altered-angle/standard, and altered-angle/vertical-separate), each containing eleven choices, was used to measure students’ illusion size. Participants from first to ninth grades were tested. The results are the followings: 1) the differences between students from first to ninth grades were not significant; 2) the difference between art and non-art students was significant with the average illusion size of art students lower than that of non-art students; 3) the difference between standard and vertical-separate was not significant; 4) the difference between basic-angle and altered-angle was significant with the average illusion size of altered-angle lower than that of basic-angle.
Chen, Ting-Wei, and 陳廷瑋. "The effects of the soup pot size on the weight illusion for the chefs." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/v7c2wb.
Повний текст джерела華梵大學
工業工程與經營資訊學系碩士班
106
Previous studies showed that the effect of box size on the size-weight illusion was significant. However, until now this size-weight illusion of the soup pot size has not been formally studied and standardized. Therefore, the purpose of this study is to investigate the size-weight illusion of the size of soup pot. A total of 12 male subjects were recruited to conduct lifting task, and to investigate the perceived heaviness, perceived volume, and perceived exertion of the different combinations of the size of soup pots (diameter of 30, 36 and 45 cm) and mass (3.0, 6.6 and 13.8 kg) relative to the standard stimulus(40 cm, 9.0 kg). After collecting and analyzing the data, it was found that the soup pot size had significant effect on the perceived heaviness and perceived volume, but it had no significant effect on the perceived exertion. While the effects of the mass on the perceived heaviness, perceived volume, and perceived exertion were significant. Overall, the subjects perceived larger soup pots to be light than smaller soup pots of the same mass. As the volume of the stimuli increased from 30 cm diameter to 45 cm diameter, the reports of perceived heaviness deceased by about 10.83%. The result showed that the size-weight illusion exists in the soup pot lifting for chefs.
Chen, Hui-Hung, and 陳輝鴻. "Moon illusion : The effects on size and distance perception of depth cues in dichoptic presentation." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/07247538479780893201.
Повний текст джерела高雄醫學大學
行為科學研究所碩士班
92
In our daily life, the judgments of size and distance seem very fast and automatic. Sometimes, we find exceptions. In some special situations, we have size and distance perception which were disagree with the reality, that we called illusions. The purpose of the research is to debate that in the dichoptic presentation, will manipulate different kinds of depth cues effecting the judgments of size and distance ? The purpose of experiment 1 was to access the effects of task types, depth cues and location of moons. The results show that task types and depth cues may not cause an effect to the judgments of the subjects, but the location of moons does. In experiment 1, size-distance invariance hypothesis(SDIH) was been supported. But we can''t find measurable relationship between the distance and size perceptions. The purpose of experiment 2 was to access the effects of task types and depth cues. The results show that depth cues may not cause an effect to the judgments of the subjects. In the dichoptic presentation, the subjects may judge the distance better. In spite of the effects of SDIH is very strong, but we still can''t predict it through the formula absolutely.
Domingues, Miguel Gregório. "The impact of learning to read in the susceptibility to a visual illusion of size." Master's thesis, 2019. http://hdl.handle.net/10451/41613.
Повний текст джерелаLearning to read is an intensive visual activity that, through perceptual learning, leads to changes on early visual brain areas, including the primary occipital cortex, V1. The Ebbinghaus illusion is known to depend on V1 functioning. Furthermore, previous studies suggest that children are less susceptible to this illusion than adults. Although this phenomenon has mostly been attributed to cognitive development, a recent study showed that it could be attributed to schooling, given its relation with the number of years of education in Himba people. In this thesis, we hypothesized that literacy, instead of schooling, is the relevant cultural variable influencing susceptibility to this illusion. We explored this hypothesis in two experiments. In Experiment 1, we examined literate, ex-illiterate and illiterate adults, matched in age and sex and from the same socioeconomic and cultural background. In Experiment 2, we compared two groups of children matched in age and cognitive development, who differed only in schooling/literacy: pre-literate preschoolers vs. first-grade children learning to read. Experiment 2 provided convergent evidence and, by comparing children and adult readers, allowed to examine if development influences susceptibility to this illusion. Participants performed a size discrimination task, where they decided which of two circles was the largest. In the first block, these circles where surrounded by other circles or inducers, which could have a congruent or incongruent size relative to the inner target circles (that is, the larger inner circle surrounded by large or by small inducers, respectively). In the second block, participants performed the same task without inducers to ensure that any difference to be found between groups in the block with inducers would not be due to differences in veridical size discrimination abilities. As expected, non-readers were less susceptible to the illusion than readers, which evidences the impact of learning to read in early visual processing.
Aprender a ler é uma atividade visual intensa que leva a mudanças em áreas visuais precoces, incluindo o córtex occipital primário, V1. A ilusão de Ebbinghaus depende do funcionamento de V1. Ademais, estudos prévios sugeriram que as crianças são menos suscetíveis a esta ilusão do que adultos. Apesar de este fenómeno ser tendencialmente atribuído ao desenvolvimento cognitivo, um estudo recente demonstrou que este podia ser atribuído à escolarização, uma vez que se observou uma relação entre os anos de escolarização em pessoas Himba e a suscetibilidade a esta ilusão. Nesta dissertação, hipotetizou-se que a literacia, ao invés da escolarização, é a variável cultural relevante que influencia a suscetibilidade. Explorou-se esta hipótese em duas experiências. Na Experiência 1, examinou-se adultos letrados, ex-iletrados e iletrados, emparelhados em sexo, idade, estatuto socioeconómico e pertencentes à mesma cultura. Na Experiência 2, comparou-se dois grupos de crianças, emparelhados em idade e desenvolvimento cognitivo, que diferiam apenas em escolarização/literacia: crianças pré letradas em jardins de infância e crianças do 1º ano a aprender a ler. A Experiência 2 serviu para fornecer convergência evidente e também permitiu examinar se o desenvolvimento influencia a suscetibilidade à ilusão, através da comparação entre crianças e adultos leitores. Os participantes desempenharam uma tarefa de discriminação de tamanho, em que tinham que decidir qual de dois círculos era maior. No primeiro bloco, os círculos eram rodeados por outros círculos, ou indutores, que podiam ter tamanho congruente ou incongruente relativamente ao tamanho do círculo central alvo (isto é, o círculo central maior podia estar rodeado de indutores grandes ou pequenos, respetivamente). No segundo bloco, os participantes desempenharam a mesma tarefa sem indutores para assegurar que qualquer diferença encontrada entre grupos não se deve a diferenças em habilidades de discriminação de tamanho verídico. Como era esperado, os não-leitores foram menos suscetíveis à ilusão do que os leitores, o que evidenciou o impacto da literacia no processamento visual precoce.
Chang, Shu-Yu, and 張書瑀. "Ergonomic Study on the Size-Weight Illusion in Individual and Team Lifting for Chinese Subjects." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/18880493527018248128.
Повний текст джерела華梵大學
工業工程與經營資訊學系碩士班
96
Manual materials handling (MMH) has been identified as one of the major causes of back injuries and musculoskeletal disorders to industrial workers and cost to industry. Foreign researches showed that the lifters perceive larger objects to be lighter than smaller objects of the same mass. This phenomenon is commonly known as the size-weight illusion. The decrease in perceived heaviness accompanying larger objects could lead the lifter to exceed the limits of safety and cause the musculoskeletal injuries. However, until now this size-weight illusion has not been studied in our country. In addition, this phenomenon also has not been verified by psychophysical research for foreign and native researchers. Therefore, the purposes of this study is to investigate the size-weight illusion of individuals and team lifting and to evaluate the effect of size-weight illusion on psychophysically determination of maximum acceptable weights (MAWL). The first, this study recruited twenty-eight subjects (18 men, 10 women) to conduct individual (experiment 1) and team (experiment 2) lifting, and to investigate the perceived heaviness, perceived volume, and perceived exertion of the different combinations of object size (103, 143 and 183 cubic inches) and mass (3.0, 6.6 and 9.0 kg). The mass affects significantly on the perceived heaviness, however, couldn’t affect significantly on the perceived volume and perceived exertion. The effects of the object size on the perceived heaviness, perceived volume, and perceived exertion is significant. The result showed that the size-weight illusion exists in the individual and team lifting for Chinese participants. As the volume of the stimuli increased from 103 to 183 cubic inches, the reports of perceived heaviness decreased 20 % and 26 % for individual and team lifting, respectively. In addition, the effects of sex and ethnic difference were not significant. The second, this study used psychophysical method and the same subjects to evaluate the effect of size-weight illusion on the MAWLs of different combinations of object size (103, 143 and 183 cubic inches) and frequency (one time maximum, 1 lift/min and 4 lifts/min) for individual (experiment 3) and team (experiment 4) lifting. The results showed that whether lifted by an individual or a team, larger containers are perceived to be substantially lighter than smaller containers, and the subjects lift more hardly accompany with an increase of volume. For individual lifting, the decrease of the MAWLs (100, 95 and 76 % relative to small containers) is larger than the revised horizontal and coupling multiplier of NIOSH (1991) (100, 87 and 73 % relative to small containers). For team lifting, the decrease of the MAWLs (100, 110 and 108 relative to small containers) is also larger than the revised horizontal and coupling multipliers of NIOSH (1991) (100, 96 and 87 % relative to small containers). This indicated that the effect of size-weight illusion on the MAWL is significant.