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How Movement Modulates Hearing.

David M Schneider1,2, Richard Mooney1

  • 1Department of Neurobiology, Duke University, Durham, North Carolina 27710, USA;

Annual Review of Neuroscience
|July 10, 2018
PubMed
Summary
This summary is machine-generated.

Motor signals actively shape hearing, not just passively receive sound. This predictive modulation enhances auditory sensitivity during movement and aids in vocal learning and error detection.

Keywords:
cancellationcorollary dischargeforward modelshearingpredictionreafferencevocal learning

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Area of Science:

  • Neuroscience
  • Auditory Neuroscience
  • Motor Control

Background:

  • Hearing is traditionally considered a passive sensory process.
  • Motor activity, particularly vocalizations, significantly influences auditory system function.
  • This motor modulation spans from the eardrum to the auditory cortex.

Purpose of the Study:

  • To explore the role of motor-related signals in modulating the auditory system.
  • To investigate the hypothesis that motor signals suppress predictable self-generated sounds.
  • To understand how this modulation enhances environmental sound detection and aids in vocal learning.

Main Methods:

  • Review of findings across multiple species including humans, monkeys, songbirds, and mice.
  • Analysis of neural circuits involved in conveying motor signals to the auditory pathway.
  • Examination of auditory system responses during various sound-generating behaviors.

Main Results:

  • Motor-related signals extensively modulate auditory activity, extending beyond vocalizations.
  • Evidence supports the predictive suppression of neural responses to self-generated sounds.
  • Insights into the neural circuits responsible for motor-auditory interactions were gained.

Conclusions:

  • Motor control actively shapes auditory perception, challenging the passive hearing model.
  • Predictive motor signals enhance auditory sensitivity and are crucial for vocal learning.
  • This research provides a unified view of motor-based auditory modulation across species.