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The cortical computations underlying feedback control in vocal production.

John F Houde1, Edward F Chang2

  • 1Department of Otolaryngology - Head and Neck Surgery, University of California, San Francisco, United States.

Current Opinion in Neurobiology
|May 20, 2015
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Summary
This summary is machine-generated.

This study reviews how neurophysiological findings support the state feedback control (SFC) model of speech motor control, highlighting cortical computations and state estimate correction processes in vocalizations.

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Area of Science:

  • Neuroscience
  • Speech Motor Control
  • Auditory Feedback Processing

Background:

  • Understanding the neural basis of speech motor control is crucial.
  • Auditory feedback plays a significant role in vocalizations.
  • The state feedback control (SFC) model provides a framework for speech motor control.

Purpose of the Study:

  • To review recent neurophysiological findings on auditory feedback processing during speech.
  • To examine how these findings impact the state feedback control (SFC) model.
  • To identify outstanding questions for future neural investigations.

Main Methods:

  • Review of recent neurophysiological studies on speaking and auditory feedback.
  • Analysis of evidence for cortical computations comparing auditory feedback with motor efference copy.
  • Examination of auditory feedback perturbation studies.

Main Results:

  • Neurophysiological research provides evidence supporting cortical computations within the SFC model.
  • Auditory feedback perturbation studies demonstrate state estimate correction processes driving compensatory responses.
  • Cortical mechanisms are involved in comparing auditory feedback with internal predictions.

Conclusions:

  • Current research strongly supports the role of cortical computations in the SFC model of speech motor control.
  • State estimate correction is a key neural process for vocal adjustments.
  • Further neural investigations are needed to resolve outstanding questions in speech motor control.