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| 題名: | Far-space neglect in conjunction but not feature search following transcranial magnetic stimulation over right posterior parietal cortex |
| 作者: | 馬杰仁;Mahayana, Indra T.;Liu, Chia-Lun;Chang, Chi Fu;Hung, Daisy L.;Tzeng, Ovid J. L.;Juan, Chi-Hung;Muggleton, Neil G. |
| 貢獻者: | 生醫理工學院認知神經科學研究所 |
| 關鍵詞: | Adult;Eye Movements;Female;Humans;Male;Occipital Lobe - physiology;Parietal Lobe - physiology;Space Perception;Transcranial Magnetic Stimulation |
| 日期: | 2014-02-15 |
| 上傳時間: | 2026-04-23 14:26:26 (UTC+8) |
| 出版者: | American Physiological Society;United States |
| 摘要: | 摘要： Near- and far-space coding in the human brain is a dynamic process. Areas in dorsal, as well as ventral visual association cortex, including right posterior parietal cortex (rPPC), right frontal eye field (rFEF), and right ventral occipital cortex (rVO), have been shown to be important in visuospatial processing, but the involvement of these areas when the information is in near or far space remains unclear. There is a need for investigations of these representations to help explain the pathophysiology of hemispatial neglect, and the role of near and far space is crucial to this. We used a conjunction visual search task using an elliptical array to investigate the effects of transcranial magnetic stimulation delivered over rFEF, rPPC, and rVO on the processing of targets in near and far space and at a range of horizontal eccentricities. As in previous studies, we found that rVO was involved in far-space search, and rFEF was involved regardless of the distance to the array. It was found that rPPC was involved in search only in far space, with a neglect-like effect when the target was located in the most eccentric locations. No effects were seen for any site for a feature search task. As the search arrays had higher predictability with respect to target location than is often the case, these data may form a basis for clarifying both the role of PPC in visual search and its contribution to neglect, as well as the importance of near and far space in these.
其他題名： J Neurophysiol
出版者： United States
出版日期： 2014-02-01
出處： Journal of neurophysiology, 2014-02, Vol.111 (4), p.705-714
識別號： ISSN: 0022-3077
識別號： ISSN: 1522-1598
識別號： EISSN: 1522-1598
識別號： DOI: 10.1152/jn.00492.2013
識別號： PMID: 24259544 |
| 顯示於類別: | [認知與神經科學研究所 ] 期刊論文
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