When is the right hemisphere holistic and when is it not? The case of Chinese character recognition
| Autor: | Harry K. S. Chung, Vienne M.Y. Wong, Janet H. Hsiao, Jacklyn C. Y. Leung |
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| Rok vydání: | 2018 |
| Předmět: |
Adult
Male Linguistics and Language Cognitive Neuroscience media_common.quotation_subject Experimental and Cognitive Psychology Functional Laterality 050105 experimental psychology Language and Linguistics Lateralization of brain function Task (project management) Young Adult 03 medical and health sciences 0302 clinical medicine Perception Developmental and Educational Psychology Humans 0501 psychology and cognitive sciences Right hemisphere media_common Brain Mapping 05 social sciences Visual field Pattern Recognition Visual Reading Female Low spatial frequency Divided visual field paradigm Visual Fields Psychology Facial Recognition 030217 neurology & neurosurgery Character recognition Cognitive psychology |
| Zdroj: | Cognition. 178:50-56 |
| ISSN: | 0010-0277 |
| DOI: | 10.1016/j.cognition.2018.04.022 |
| Popis: | Holistic processing (HP) has long been considered a characteristic of right hemisphere (RH) processing. Indeed, holistic face processing is typically associated with left visual field (LVF)/RH processing advantages. Nevertheless, expert Chinese character recognition involves reduced HP and increased RH lateralization, presenting a counterexample. Recent modeling research suggests that RH processing may be associated with an increase or decrease in HP, depending on whether spacing or component information was used respectively. Since expert Chinese character recognition involves increasing sensitivity to components while deemphasizing spacing information, RH processing in experts may be associated with weaker HP than novices. Consistent with this hypothesis, in a divided visual field paradigm, novices exhibited HP only in the LVF/RH, whereas experts showed no HP in either visual field. This result suggests that the RH may flexibly switch between part-based and holistic representations, consistent with recent fMRI findings. The RH's advantage in global/low spatial frequency processing is suggested to be relative to the task relevant frequency range. Thus, its use of holistic and part-based representations may depend on how attention is allocated for task relevant information. This study provides the first behavioral evidence showing how type of information used for processing modulates perceptual representations in the RH. |
| Databáze: | OpenAIRE |
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