When is the right hemisphere holistic and when is it not? The case of Chinese character recognition

Cognition
Harry K S ChungJanet Hui-Wen Hsiao

Abstract

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 attent...Continue Reading

Citations

Mar 8, 2020·Psychonomic Bulletin & Review·Ricky Van Yip TsoJanet Hui-Wen Hsiao
Jan 23, 2021·Scientific Reports·Ricky Van-Yip TsoDan Lin
Sep 17, 2021·Cognitive Neuropsychology·Monireh FeizabadiJason J S Barton
Nov 28, 2021·Scientific Reports·Heida Maria SigurdardottirEydis Thuridur Halldorsdottir

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