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      Beta and gamma rhythms in human auditory cortex during musical beat processing.

      Annals of the New York Academy of Sciences
      Acoustic Stimulation, Auditory Cortex, physiology, Auditory Perception, Humans, Magnetoencephalography, Music, Periodicity, Young Adult

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          Abstract

          We examined beta- (approximately 20 Hz) and gamma- (approximately 40 Hz) band activity in auditory cortices by means of magnetoencephalography (MEG) during passive listening to a regular musical beat with occasional omission of single tones. The beta activity decreased after each tone, followed by an increase, thus forming a periodic modulation synchronized with the stimulus. The beta decrease was absent after omissions. In contrast, gamma-band activity showed a peak after tone and omission, suggesting underlying endogenous anticipatory processes. We propose that auditory beta and gamma oscillations have different roles in musical beat encoding and auditory-motor interaction.

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          Author and article information

          Journal
          19673759
          10.1111/j.1749-6632.2009.04779.x

          Chemistry
          Acoustic Stimulation,Auditory Cortex,physiology,Auditory Perception,Humans,Magnetoencephalography,Music,Periodicity,Young Adult

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