June 2007
Volume 7, Issue 9
Free
Vision Sciences Society Annual Meeting Abstract  |   June 2007
Spatial-temporal grouping and perceived writing sequence of Chinese characters in the human brain: Comparison of readers and non-readers
Author Affiliations
  • Su-Ling Yeh
    Department of Psychology, National Taiwan University, Taipei, Taiwan
  • San-Yuan Lin
    Department of Psychology, National Taiwan University, Taipei, Taiwan
  • Wei-Lun Chou
    Department of Psychology, National Taiwan University, Taipei, Taiwan
  • Der-Yow Chen
    Department of Psychology, National Taiwan University, Taipei, Taiwan, and Interdisciplinary MR lab, Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan
  • Jyh-Horng Chen
    Interdisciplinary MR lab, Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan
  • Chien-Chung Chen
    Department of Psychology, National Taiwan University, Taipei, Taiwan
Journal of Vision June 2007, Vol.7, 908. doi:10.1167/7.9.908
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      Su-Ling Yeh, San-Yuan Lin, Wei-Lun Chou, Der-Yow Chen, Jyh-Horng Chen, Chien-Chung Chen; Spatial-temporal grouping and perceived writing sequence of Chinese characters in the human brain: Comparison of readers and non-readers. Journal of Vision 2007;7(9):908. doi: 10.1167/7.9.908.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Perceptual grouping by spatial-temporal congruency is important for perceiving continuous actions. We investigated neural substrates for perceived actions by measuring BOLD (blood oxygenation level dependent) activation to Chinese character writing sequences. The block design fMRI experiment had one test block containing characters presented stroke by stroke in generally accepted writing sequence (normal) and a control block containing characters with random stroke sequence. Chinese readers and non-readers were asked to count either the number of strokes (relevant task) or the number of color changes of the fixation (irreverent task). The BOLD activation was collected on a Bruker 3T magnet (EPI, TR=3s, TE=60ms, flip angle=90°). The lateral occipital complex (LOC), the intraoccipital sulcus (IOS), and the intraparietal sulcus (IPS) showed differential activation between normal and random writing sequence. Compared with readers, non-readers showed significantly reduced activation in these brain areas except the left IOS. Both groups showed much greater activation with relevant attention task than with irrelevant task. These results suggest two components in perceived writing sequence of Chinese characters: A general spatial-temporal grouping effect in perceiving motor sequence that requires attention, and a stimulus-specific ordering effect formed through learning experience.

Yeh, S.-L. Lin, S.-Y. Chou, W.-L. Chen, D.-Y. Chen, J.-H. Chen, C.-C. (2007). Spatial-temporal grouping and perceived writing sequence of Chinese characters in the human brain: Comparison of readers and non-readers [Abstract]. Journal of Vision, 7(9):908, 908a, http://journalofvision.org/7/9/908/, doi:10.1167/7.9.908. [CrossRef]
Footnotes
 [Supported by the National Science Council of Taiwan, NSC95-2752-H-002-007-PAE]
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