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Learning Speech Production and Perception through Sensorimotor Interactions.

Shihab Shamma1,2, Prachi Patel3,4, Shoutik Mukherjee1

  • 1Department of Electrical and Computer Engineering, Institute for Systems Research, University of Maryland, College Park, MD 20742, USA.

Cerebral Cortex Communications
|January 28, 2021
PubMed
Summary
This summary is machine-generated.

Neural pathways link action and perception. This study reveals "forward" neural projections are crucial for learning skilled motor tasks like speech, not just execution.

Keywords:
auditory cortexhuman ECoGmirror networksensorimotor interactionsspeech perceptionspeech productionvocal articulation

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Area of Science:

  • Neuroscience
  • Motor Control
  • Speech Processing

Background:

  • Action and perception are intricately linked, requiring precise sensorimotor coordination for complex behaviors.
  • Understanding sensorimotor interactions is key to deciphering the neural basis of skilled motor tasks, such as speech.

Purpose of the Study:

  • To investigate the detailed nature of sensorimotor interactions during speech production.
  • To elucidate the role of these interactions in both learning and executing the skilled motor task of speaking.

Main Methods:

  • Analysis of electrocorticography (ECoG) recordings in the high-gamma band (70-150 Hz) from human subjects.
  • Subjects engaged in listening, speaking, or silently articulating speech.
  • Mathematical simulations were employed to model neural projections.

Main Results:

  • Identified elaborate spectrotemporally modulated neural activity between auditory and motor cortical regions during speech.
  • Observed neural projections in both "forward" (motor-to-sensory) and "inverse" directions.
  • Mathematical simulations highlighted a critical role for forward projections in vocal tract control learning.

Conclusions:

  • Forward neural projections play a significant role in the learning of skilled sensorimotor tasks, extending beyond their known predictive function in execution.
  • This research broadens the understanding of the functional significance of forward projections in motor learning and control.