Presence of strong harmonics during visual entrainment: a magnetoencephalography study.
Presence of strong harmonics during visual entrainment: a magnetoencephalography study.
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DOI：
10.1016/j.biopsycho.2012.04.008
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发表时间：
2012-09
影响因子：
2.6
通讯作者：
Wilson, Tony W.
中科院分区：
文献类型：
--
作者：
Heinrichs-Graham, Elizabeth;Wilson, Tony W.
已知视觉神经元将它们的放电与以恒定速率闪烁的刺激同步（例如，12 Hz）。这些所谓的视觉稳态反应（VSSR）是一个研究得很好的现象，但其潜在的机制是广泛不同意。此外，有有限的证据表明，视觉神经元可以同时同步在谐波的刺激频率。我们利用脑磁图（MEG）检查同步在谐波的视觉刺激频率（18赫兹）。在基频36、54和72 Hz下分析MEG数据的事件相关同步（ERS）。我们发现在所有的乐队强ERS。只有31%的参与者在基本频率下表现出最大的夹带;其他人在36或54 Hz下表现出更强的夹带。这些反应的皮质病灶表明谐波涉及的皮质部分不同于基波。这些发现表明，空间重叠的神经元亚群同时夹带在不同的谐波的刺激频率。
Visual neurons are known to synchronize their firing with stimuli that flicker at a constant rate (e.g., 12 Hz). These so-called visual steady-state responses (VSSR) are a well-studied phenomenon, yet the underlying mechanisms are widely disagreed upon. Furthermore, there is limited evidence that visual neurons may simultaneously synchronize at harmonics of the stimulation frequency. We utilized magnetoencephalography (MEG) to examine synchronization at harmonics of the visual stimulation frequency (18 Hz). MEG data were analyzed for event-related-synchronization (ERS) at the fundamental frequency, 36, 54, and 72 Hz. We found strong ERS in all bands. Only 31% of participants showed maximum entrainment at the fundamental; others showed stronger entrainment at either 36 or 54 Hz. The cortical foci of these responses indicated that the harmonics involved cortices that were partially distinct from the fundamental. These findings suggest that spatially-overlapping subpopulations of neurons are simultaneously entrained at different harmonics of the stimulus frequency.
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影响因子：
3.7
作者：
Pastor, M. A.;Valencia, M.;Masdeu, J. C.
通讯作者：
Masdeu, J. C.
影响因子：
3.2
作者：
Kim YJ;Grabowecky M;Paller KA;Suzuki S
通讯作者：
Suzuki S
DOI：
10.1073/pnas.0900728106
发表时间：
2009-05-19
影响因子：
11.1
作者：
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通讯作者：
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影响因子：
4.6
作者：
VanVeen, BD;vanDrongelen, W;Suzuki, A
通讯作者：
Suzuki, A
影响因子：
5.7
作者：
Fawcett, IP;Barnes, GR;Singh, KD
通讯作者：
Singh, KD