Effects of TMS over premotor and superior temporal cortices on biological motion perception

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題名:	Effects of TMS over premotor and superior temporal cortices on biological motion perception
作者:	馬杰仁;van Kemenade, Bianca Michelle;Muggleton, Neil;Walsh, Vincent;Saygin, Ayse Pinar
貢獻者:	生醫理工學院認知神經科學研究所
關鍵詞:	Adult;Bias;Brain;Brain Mapping;Cognition & reasoning;Female;Humans;Magnetic Resonance Imaging;Male;Motion Perception - physiology;Neurosciences;NMR;Nuclear magnetic resonance;Pattern Recognition, Visual - physiology;Photic Stimulation;Reaction Time;Sensory perception;Temporal Lobe - physiology;Transcranial Magnetic Stimulation;Young Adult
日期:	2012-04-01
上傳時間:	2026-04-23 14:25:34 (UTC+8)
出版者:	One Rogers Street, Cambridge, MA 02142-1209, USA: MIT Press - Journals
摘要:	摘要： AbstractUsing MRI-guided off-line TMS, we targeted two areas implicated in biological motion processing: ventral premotor cortex (PMC) and posterior STS (pSTS), plus a control site (vertex). Participants performed a detection task on noise-masked point-light displays of human animations and scrambled versions of the same stimuli. Perceptual thresholds were determined individually. Performance was measured before and after 20 sec of continuous theta burst stimulation of PMC, pSTS, and control (each tested on different days). A matched nonbiological object motion task (detecting point-light displays of translating polygons) served as a further control. Data were analyzed within the signal detection framework. Sensitivity (d′) significantly decreased after TMS of PMC. There was a marginally significant decline in d′ after TMS of pSTS but not of control site. Criterion (response bias) was also significantly affected by TMS over PMC. Specifically, subjects made significantly more false alarms post-TMS of PMC. These effects were specific to biological motion and not found for the nonbiological control task. To summarize, we report that TMS over PMC reduces sensitivity to biological motion perception. Furthermore, pSTS and PMC may have distinct roles in biological motion processing as behavioral performance differs following TMS in each area. Only TMS over PMC led to a significant increase in false alarms, which was not found for other brain areas or for the control task. TMS of PMC may have interfered with refining judgments about biological motion perception, possibly because access to the perceiver's own motor representations was compromised. 其他題名： J Cogn Neurosci 出版者： One Rogers Street, Cambridge, MA 02142-1209, USA: MIT Press - Journals 出版日期： 2012-04-01 出處： Journal of Cognitive Neuroscience, 2012-04, Vol.24 (4), p.896-904 資源來源： EBSCOhost Academic Search Premier 版權： Copyright MIT Press Journals Apr 2012 識別號： ISSN: 0898-929X 識別號： ISSN: 1530-8898 識別號： EISSN: 1530-8898 識別號： DOI: 10.1162/jocn_a_00194 識別號： PMID: 22264195
顯示於類別:	[認知與神經科學研究所 ] 期刊論文

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