Temporal expectations and neural amplitude fluctuations in auditory cortex interactively influence perception

被引:58
作者
Herrmann, Bjoern [1 ]
Henry, Molly J. [1 ]
Haegens, Saskia [2 ,3 ]
Obleser, Jonas [1 ,4 ]
机构
[1] Max Planck Inst Human Cognit & Brain Sci, Max Planck Res Grp Auditory Cognit, D-04103 Leipzig, Germany
[2] Columbia Univ, Dept Psychiat, Coll Phys & Surg, New York, NY 10032 USA
[3] Nathan S Kline Inst, Cognit Neurosci & Schizophrenia Program, Orangeburg, NY 10962 USA
[4] Univ Lubeck, Dept Psychol, D-23562 Lubeck, Germany
关键词
Auditory alpha oscillations; Auditory perception; Temporal expectations; Neural entrainment; LOW-FREQUENCY OSCILLATIONS; EEG ALPHA OSCILLATIONS; PRESTIMULUS ALPHA; NEURONAL OSCILLATIONS; PHASE ENTRAINMENT; MU RHYTHM; ATTENTION; BRAIN; MODULATION; PERFORMANCE;
D O I
10.1016/j.neuroimage.2015.09.019
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Alignment of neural oscillations with temporally regular input allows listeners to generate temporal expectations. However, it remains unclear how behavior is governed in the context of temporal variability: What role do temporal expectations play, and how do they interact with the strength of neural oscillatory activity? Here, human participants detected near-threshold targets in temporally variable acoustic sequences. Temporal expectation strength was estimated using an oscillator model and pre-target neural amplitudes in auditory cortex were extracted from magnetoencephalography signals. Temporal expectations modulated target-detection performance, however, only when neural delta-band amplitudes were large. Thus, slow neural oscillations act to gate influences of temporal expectation on perception. Furthermore, slow amplitude fluctuations governed linear and quadratic influences of auditory alpha-band activity on performance. By fusing a model of temporal expectation with neural oscillatory dynamics, the current findings show that human perception in temporally variable contexts relies on complex interactions between multiple neural frequency bands. (C) 2015 Elsevier Inc. All rights reserved.
引用
收藏
页码:487 / 497
页数:11
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