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An fMRI Study of Word Reading and Colour Recognition in Different Quadrant Fields
This fMRI study analyzed activations for processing of word and colour, which were presented in each of the four quadrants, to investigate anatomical segregation between colour and orientation processing and also to examine the effect of visual stimulus position on brain activations. Main effect of...
Autores principales: | , , , , , |
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Formato: | Texto |
Lenguaje: | English |
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Bentham Open
2008
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2577944/ https://www.ncbi.nlm.nih.gov/pubmed/19018316 http://dx.doi.org/10.2174/1874440000802010056 |
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author | Ino, Tadashi Nakai, Ryusuke Azuma, Takashi Tokumoto, Kazuki Usami, Kiyohide Kimura, Toru |
author_facet | Ino, Tadashi Nakai, Ryusuke Azuma, Takashi Tokumoto, Kazuki Usami, Kiyohide Kimura, Toru |
author_sort | Ino, Tadashi |
collection | PubMed |
description | This fMRI study analyzed activations for processing of word and colour, which were presented in each of the four quadrants, to investigate anatomical segregation between colour and orientation processing and also to examine the effect of visual stimulus position on brain activations. Main effect of visual category was found in the bilateral extrastriate cortices extending to the left visual word form area (word > colour) and small area of the right ventrolateral prefrontal cortex (colour > word). ROI analysis showed that there was a tendency that V4α, not V4/8, showed a greater response to colours than to words. Main effect of visual fields was found in early visual areas, which showed greater responses to the left than to the right field stimuli and also to the lower than to the upper field stimuli. No significant interactions between visual category and visual fields were found. |
format | Text |
id | pubmed-2577944 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2008 |
publisher | Bentham Open |
record_format | MEDLINE/PubMed |
spelling | pubmed-25779442008-11-18 An fMRI Study of Word Reading and Colour Recognition in Different Quadrant Fields Ino, Tadashi Nakai, Ryusuke Azuma, Takashi Tokumoto, Kazuki Usami, Kiyohide Kimura, Toru Open Neuroimag J Article This fMRI study analyzed activations for processing of word and colour, which were presented in each of the four quadrants, to investigate anatomical segregation between colour and orientation processing and also to examine the effect of visual stimulus position on brain activations. Main effect of visual category was found in the bilateral extrastriate cortices extending to the left visual word form area (word > colour) and small area of the right ventrolateral prefrontal cortex (colour > word). ROI analysis showed that there was a tendency that V4α, not V4/8, showed a greater response to colours than to words. Main effect of visual fields was found in early visual areas, which showed greater responses to the left than to the right field stimuli and also to the lower than to the upper field stimuli. No significant interactions between visual category and visual fields were found. Bentham Open 2008-08-12 /pmc/articles/PMC2577944/ /pubmed/19018316 http://dx.doi.org/10.2174/1874440000802010056 Text en © Ino et al.; Licensee Bentham Open http://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits unrestrictive use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Article Ino, Tadashi Nakai, Ryusuke Azuma, Takashi Tokumoto, Kazuki Usami, Kiyohide Kimura, Toru An fMRI Study of Word Reading and Colour Recognition in Different Quadrant Fields |
title | An fMRI Study of Word Reading and Colour Recognition in Different Quadrant Fields |
title_full | An fMRI Study of Word Reading and Colour Recognition in Different Quadrant Fields |
title_fullStr | An fMRI Study of Word Reading and Colour Recognition in Different Quadrant Fields |
title_full_unstemmed | An fMRI Study of Word Reading and Colour Recognition in Different Quadrant Fields |
title_short | An fMRI Study of Word Reading and Colour Recognition in Different Quadrant Fields |
title_sort | fmri study of word reading and colour recognition in different quadrant fields |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2577944/ https://www.ncbi.nlm.nih.gov/pubmed/19018316 http://dx.doi.org/10.2174/1874440000802010056 |
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