Stimulus-induced visual cortical networks are recapitulated by spontaneous local and interareal synchronization

Lewis Christopher M.; Bosman Conrado A.; Womelsdorf ThiloFries Pascal

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Stimulus-induced visual cortical networks are recapitulated by spontaneous local and interareal synchronization

机译：Stimulus-induced visual cortical networks are recapitulated by spontaneous local and interareal synchronization

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Intrinsic covariation of brain activity has been studied across many levels of brain organization. Between visual areas, neuronal activity covaries primarily among portions with similar retinotopic selectivity. We hypothesized that spontaneous interareal coactivation is subserved by neuronal synchronization. We performed simultaneous high-density electrocorticographic recordings across the dorsal aspect of several visual areas in one hemisphere in each of two awake monkeys to investigate spatial patterns of local and interareal synchronization. We show that stimulation-induced patterns of interareal coactivation were reactivated in the absence of stimulation for the visual quadrant covered. Reactivation occurred through both interareal cofluctuation of local activity and interareal phase synchronization. Furthermore, the trial-by-trial covariance of the induced responses recapitulated the pattern of interareal coupling observed during stimulation, i.e., the signal correlation. Reactivation-related synchronization showed distinct peaks in the theta, alpha, and gamma frequency bands. During passive states, this rhythmic reactivation was augmented by specific patterns of arrhythmic correspondence. These results suggest that networks of intrinsic covariation observed at multiple levels and with several recording techniques are related to synchronization and that behavioral state may affect the structure of intrinsic dynamics.

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《Proceedings of the National Academy of Sciences of the United States of America.》 |2016年第5期|E606-E615|共10页
作者
Lewis Christopher M.; Bosman Conrado A.; Womelsdorf ThiloFries Pascal;
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作者单位

Max Planck Gesell, Ernst Strungmann Inst ESI Neurosci Cooperat, D-60528 Frankfurt, Germany;

Radboud Univ Nijmegen, Donders Inst Brain Cognit & Behav, NL-6525 EN Nijmegen, Netherlands;

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收录信息美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
中图分类自然科学总论;
关键词
vision; intrinsic activity; oscillations; connectivity; networks;

Stimulus-induced visual cortical networks are recapitulated by spontaneous local and interareal synchronization

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