The critical role of phase difference in gamma oscillation within the temporoparietal network for binding visual working memory

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題名:	The critical role of phase difference in gamma oscillation within the temporoparietal network for binding visual working memory
作者:	梁偉光;Tseng, Philip;Chang, Yu-Ting;Chang, Chi-Fu;Liang, Wei-Kuang;Juan, Chi-Hung
貢獻者:	生醫理工學院認知神經科學研究所
關鍵詞:	631/378/1595/1636;631/378/1595/3922;Adult;Cortex (parietal);Female;Gamma Rhythm - physiology;Humanities and Social Sciences;Humans;Male;Memory;Memory, Short-Term - physiology;multidisciplinary;Nerve Net - physiology;Neuroimaging;Parietal Lobe - physiology;Science;Short term memory;Synchronization;Temporal lobe;Temporal Lobe - physiology;Theta rhythms;Visual cortex;Visual Perception - physiology;Visual task performance
日期:	2016-08-30
上傳時間:	2026-04-23 14:39:57 (UTC+8)
出版者:	Nature Publishing Group;London: Nature Publishing Group UK
摘要:	摘要： How does the brain enable us to remember two or more object representations in visual working memory (VWM) without confusing them? This “gluing” process, or feature binding, refers to the ability to join certain features together while keeping them segregated from others. Recent neuroimaging research has reported higher BOLD response in the left temporal and parietal cortex during a binding-VWM task. However, less is known about how the two regions work in synchrony to support such process. In this study, we applied transcranial alternating current stimulation (tACS) over the left temporal and parietal cortex in gamma and theta frequency, with a phase difference of either 0° (in-phase) or 180° (anti-phase) to account for the different ways through which neural synchronization may occur. We found no facilitatory or inhibitory effect from sham, theta and in-phase gamma stimulation. Importantly, there was an enhancement effect from anti-phase gamma tACS that was binding-specific and such effect was only apparent in low-performing individuals who had room for improvement. Together, these results demonstrate that binding-VWM is supported by a temporally-precise oscillatory mechanism within the gamma frequency range and that the advantageous 180°-apart phase relationship also implies a possible temporal driver-to-receiver time-lag between the temporal and parietal cortex. 其他題名： Sci Rep 出版者： London: Nature Publishing Group UK 出版日期： 2016-08-30 出處： Scientific reports, 2016-08, Vol.6 (1), p.32138, Article 32138 資源來源： Publicly available content database 版權： The Author(s) 2016 版權： Copyright Nature Publishing Group Aug 2016 版權： Copyright © 2016, The Author(s) 2016 The Author(s) 識別號： ISSN: 2045-2322 識別號： EISSN: 2045-2322 識別號： DOI: 10.1038/srep32138 識別號： PMID: 27573864
顯示於類別:	[認知與神經科學研究所 ] 期刊論文

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