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Perception is a fundamental psychological process that enables individuals to organize, interpret, and consciously experience sensory information. This process is crucial for understanding and interacting with the world around us. It includes both bottom-up and top-down processing, each playing a distinct role in how we perceive our environment.
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Neurophysiological principles underlying predictive coding during dynamic perception-action integration.

Roula Jamous1, Foroogh Ghorbani1, Moritz Mükschel1

  • 1Cognitive Neurophysiology, Department of Child and Adolescent Psychiatry, Faculty of Medicine, TU Dresden, Fetscherstrasse 74, Dresden 01307, Germany.

Neuroimage
|October 17, 2024
PubMed
Summary
This summary is machine-generated.

Brains act as prediction machines, integrating perception and action via distinct neural mechanisms. Theta and alpha brain waves, particularly in the insular cortex, are crucial for this dynamic predictive coding process.

Keywords:
AlphaEffective connectivityNetwork connectivityPerception-action integrationPredictive codingTheta

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Area of Science:

  • Cognitive Neuroscience
  • Neurophysiology

Background:

  • The brain's role as a
  • prediction machine
  • is a central concept in cognitive neuroscience.
  • Existing frameworks lack a clear understanding of how predictability influences perception-action integration and its neural underpinnings.

Purpose of the Study:

  • To investigate the neurophysiological mechanisms of predictive coding during dynamic perception-action integration.
  • To elucidate the roles of theta and alpha band activity in integrating and retrieving perception-action codes.

Main Methods:

  • Analysis of nonlinearly directed connectivities in theta and alpha frequency bands between cortical structures.
  • Examination of neural activity modulation during perception-action integration and retrieval.

Main Results:

  • Theta band activity in the insular cortex and temporo-hippocampal structures is modulated by predictability during perception-motor code integration, with the insular cortex appearing to guide the process.
  • Retrieval of integrated codes during action relies on alpha band activity, specifically top-down influences from inferior frontal structures to insular and temporo-hippocampal regions.
  • These top-down alpha effects may represent attentional shielding during retrieval.

Conclusions:

  • Distinct neurophysiological mechanisms involving theta and alpha band activity underpin predictive coding in dynamic perception-action integration.
  • The findings connect predictive coding principles with frameworks of perception-action integration, highlighting the roles of specific brain regions and frequency bands.