Fluctuations in instantaneous frequency predict alpha amplitude during visual perception.
Fluctuations in instantaneous frequency predict alpha amplitude during visual perception.
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DOI：
10.1038/s41467-017-02176-x
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发表时间：
2017-12-12
影响因子：
16.6
通讯作者：
Serences JT
中科院分区：
文献类型：
--
作者：
Nelli S;Itthipuripat S;Srinivasan R;Serences JT
α波段（8-13 Hz）的节律性神经活动被认为在视觉信息的选择性处理中具有重要作用。通常，α振幅和瞬时频率的调制被认为反映了影响视觉信息处理的可分离方面的独立机制。然而，在具有相互作用的振荡器的复杂系统中，例如大脑，振幅和频率在数学上是相关的。在这里，我们记录了人类受试者的脑电图，并表明在同一视觉辨别任务中，α振幅和瞬时频率都能预测行为表现。与耦合振荡器的模型相一致，我们表明，瞬时频率的波动预测α振幅在一个单一的试验基础上，经验表明，这些指标是不独立的。这种相互依赖性表明，振幅和瞬时频率的变化反映了调节α振荡和视觉信息处理的兴奋性和抑制性神经活动的共同变化。虽然α波段神经振荡的幅度和频率与可分离的视觉过程有关，但它们在数学上并不独立。在这里，作者表明，瞬时频率的波动预测阿尔法振幅在视觉辨别任务。
Rhythmic neural activity in the alpha band (8–13 Hz) is thought to have an important role in the selective processing of visual information. Typically, modulations in alpha amplitude and instantaneous frequency are thought to reflect independent mechanisms impacting dissociable aspects of visual information processing. However, in complex systems with interacting oscillators such as the brain, amplitude and frequency are mathematically dependent. Here, we record electroencephalography in human subjects and show that both alpha amplitude and instantaneous frequency predict behavioral performance in the same visual discrimination task. Consistent with a model of coupled oscillators, we show that fluctuations in instantaneous frequency predict alpha amplitude on a single trial basis, empirically demonstrating that these metrics are not independent. This interdependence suggests that changes in amplitude and instantaneous frequency reflect a common change in the excitatory and inhibitory neural activity that regulates alpha oscillations and visual information processing. Though the amplitude and frequency of neural oscillations in the alpha band are related to dissociable visual processes, they are not independent mathematically. Here, the authors show that fluctuations in instantaneous frequency predict alpha amplitude during visual discrimination tasks.
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影响因子：
16.2
作者：
Fries P
通讯作者：
Fries P
影响因子：
16.2
作者：
Bosman CA;Schoffelen JM;Brunet N;Oostenveld R;Bastos AM;Womelsdorf T;Rubehn B;Stieglitz T;De Weerd P;Fries P
通讯作者：
Fries P
影响因子：
16.2
作者：
Blatow, M;Rozov, A;Monyer, H
通讯作者：
Monyer, H
DOI：
10.1016/0013-4694(80)90011-5
发表时间：
1980-01-01
期刊：
ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY
影响因子：
--
作者：
DASILVA, FHL;VOS, JE;VANROTTERDAM, A
通讯作者：
VANROTTERDAM, A
影响因子：
3.7
作者：
Grandy, Thomas H.;Werkle-Bergner, Markus;Lindenberger, Ulman
通讯作者：
Lindenberger, Ulman