Neuroscience 2001 Abstract
| Presentation Number: | 511.23 |
|---|---|
| Abstract Title: | CROSS-MODAL TRANSFER FROM VISUAL TO TACTILE REPRESENTATIONS DURING SHAPE MATCHING: A FUNCTIONAL MRI STUDY. |
| Authors: |
Saitoh, D.*1
; Okada, T.2
; Morita, Y.3
; Yonekura, Y.1
; Sadato, N.3
1Biomedical Imaging Reserch Center, Fukui Medical University, Matsuoka, Japan 2National Institute for Physiological Sciences, Okazaki, Japan 3Physiology, TokushimaUniv Medical School, Tokushima, Japan |
| Primary Theme and Topics |
Sensory Systems - Multisensory |
| Session: |
511. Multisensory I Poster |
| Presentation Time: | Tuesday, November 13, 2001 10:00 AM-11:00 AM |
| Location: | Exhibit Hall Y-3 |
| Keywords: | HUMAN, FUNCTIONAL MRI, cross-modal transfer, intraparietal sulcus |
To depict the neural representation of the cross-modal transfer of information between the tactile and visual shape representation, we performed 3 Tesla functional MRI with 7 normal volunteers. During the scan, two dimensional shape patterns were simultaneously presented both tactually and visually. Two diagram patterns engraved side-by-side on a plastic tile were explored by the right thumb, while similar patterns were presented through the video-projector. Four different matching tasks were performed as separate sessions: tactile-tactile with eyes closed (TT), tactile-tactile with visual input (TTv), visual-visual with tactile input (VVt), and tactile-visual (TV). Each session was repeated twice. Tactile shape matching task activated the left primary sensorimotor area, bilateral superior and inferior parietal lobule, anterior SMA and bilateral cerebellum. Visual matching (VVt - TT) activated the primary visual cortex, lingual and fusiform gyri bilaterally. Cross-modal area, which was activated by both TV - TTv and TV - VVt, was found in the left posterior intraparietal sulcus close to the occipitoparietal sulcus. This area was not activated either during tactile-tactile matching with or without visual input, or during visual matching (VVt). The posterior intraparietal sulcus may integrate the relevant shape information of different modalities during the tactilel-visual matching.
Supported by a research grant from the Japan Society for the Promotion of Science (JSPS-RFTF97L00203).
Sample Citation:
[Authors]. [Abstract Title]. Program No. XXX.XX. 2001 Neuroscience Meeting Planner. San Diego, CA: Society for Neuroscience, 2001. Online.
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