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Perspectives on Neuroscience
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A New Perspective on Predictive Motor Signaling.

Hans Straka1, John Simmers2, Boris P Chagnaud1

  • 1Department Biology II, Ludwig-Maximilians-University Munich, Grosshaderner Str. 2, 82152 Planegg, Germany.

Current Biology : CB
|March 7, 2018
PubMed
Summary

Predictive neural signals, like corollary discharge (efference copy), help the brain distinguish self-generated sensations from external ones. This predictive signaling also coordinates multiple motor behaviors and sensory inputs for effective action.

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Area of Science:

  • Neuroscience
  • Motor Control
  • Sensory Processing

Background:

  • Adaptive behavior requires intricate neural processing across motor and sensory systems.
  • Intrinsic neuronal signals, termed corollary discharge or efference copy, predict sensory outcomes of actions.

Purpose of the Study:

  • Identify distinguishing features of corollary discharge and efference copy.
  • Explore predictive signaling in coordinating motor-to-sensory systems.
  • Extend predictive signaling to motor-to-motor coordination and sensory gating.

Main Methods:

  • Analysis of well-established examples.
  • Framework of predictive motor-to-sensory system coordination.
  • Examination of neural replicas of motor commands.

Main Results:

  • Corollary discharge and efference copy enable dissociation of reafferent and exafferent sensory information.
  • Neural replicas of motor commands coordinate distinct behaviors.
  • Predictive signaling gates sensory input to coupled motor systems.

Conclusions:

  • Predictive internal signaling is crucial for coordinating disparate motor and sensory circuits.
  • This mechanism enhances the production of effective adaptive behaviors.
  • Understanding predictive signaling advances knowledge of central nervous system coordination.