Right hemisphere lateralization and holistic processing do not always go together: An ERP investigation of a training study

Ricky Van Yip TSO, Hangyu CHEN, Yui Andrew YEUNG, Kit Fong Terry AU, Hui-wen Janet HSIAO

Research output: Chapter in Book/Report/Conference proceedingChapters

Abstract

Holistic processing (HP) and right-hemispheric lateralization both mark expertise in visual object recognition such as face and sub-ordinate object perception. However, counterexamples have been found recently: Experiences of selective attention to parts such as writing experiences in Chinese characters reduced HP while increased right hemisphere lateralization. We investigated the association between HP and brain activities measured by event-related potentials (ERP) in participants trained to recognize artificially-created scripts using either whole-word or grapheme-to-phoneme approaches. Stronger N170 activities were found in both hemispheres in both training approaches. Though the type of training approaches induced opposite directions in correlations between HP and the ERP signals in the right hemisphere: In the whole-word condition, the HP effect increased with stronger right-hemispheric N170 activities; while the direction of this correlation was reversed in the grapheme-to-phoneme condition. This demonstrates that HP and right hemispheric lateralization are separate processes that are associated with different perceptual mechanisms.
Original languageEnglish
Title of host publicationCogSci 2017: Proceedings of the 39th Annual Meeting of the Cognitive Science Society
Place of PublicationAustin
PublisherCognitive Science Society, Inc
Pages3386-3391
ISBN (Print)9780991196760
Publication statusPublished - 2017

Citation

Tso, R. V.-y., Chen, H., Yeung, Y. A., Au, T. K.-f., & Hsiao, H.-w. (2017). Right hemisphere lateralization and holistic processing do not always go together: An ERP investigation of a training study. In CogSci 2017: Proceedings of the 39th Annual Meeting of the Cognitive Science Society (pp. 3386-3391). Austin: Cognitive Science Society, Inc.

Keywords

  • Holistic processing
  • Hemisphere lateralization
  • ERP
  • EEG
  • Perceptual expertise

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