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Prominence of delta oscillatory rhythms in the motor cortex and their relevance for auditory and speech perception.

  • Morillon B Aix Marseille University, Inserm, INS, Institut de Neurosciences des Systèmes, Marseille, France. Electronic address: bnmorillon@gmail.com.
  • Arnal LH Department of Fundamental Neuroscience, University of Geneva, Biotech Campus, Geneva, Switzerland.
  • Schroeder CE Translational Neuroscience Division, Center for Biomedical Imaging and Neuromodulation, Nathan Kline Institute for Psychiatric Research, Orangeburg, New York, USA; Departments of Neurological Surgery and Psychiatry, Columbia University College of Physicians and Surgeons, New York, NY, USA.
  • Keitel A University of Glasgow, Centre for Cognitive Neuroscience, Glasgow, UK; University of Dundee, School of Social Sciences, Dundee, UK. Electronic address: anne.keitel@glasgow.ac.uk.
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  • 2019-09-14
Published in:
  • Neuroscience and biobehavioral reviews. - 2019
Active inference
Active sensing
Audio-motor coupling
Delta
Neural oscillations
Rhythm
Speech perception
Acoustic Stimulation
Auditory Perception
Delta Rhythm
Humans
Motor Cortex
Speech
Speech Perception
English In the motor cortex, beta oscillations (∼12-30 Hz) are generally considered a principal rhythm contributing to movement planning and execution. Beta oscillations cohabit and dynamically interact with slow delta oscillations (0.5-4 Hz), but the role of delta oscillations and the subordinate relationship between these rhythms in the perception-action loop remains unclear. Here, we review evidence that motor delta oscillations shape the dynamics of motor behaviors and sensorimotor processes, in particular during auditory perception. We describe the functional coupling between delta and beta oscillations in the motor cortex during spontaneous and planned motor acts. In an active sensing framework, perception is strongly shaped by motor activity, in particular in the delta band, which imposes temporal constraints on the sampling of sensory information. By encoding temporal contextual information, delta oscillations modulate auditory processing and impact behavioral outcomes. Finally, we consider the contribution of motor delta oscillations in the perceptual analysis of speech signals, providing a contextual temporal frame to optimize the parsing and processing of slow linguistic information.
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  • English
Open access status
green
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https://folia.unifr.ch/global/documents/76852
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