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Functional interactions between intrinsic brain activity and behavior.

Sepideh Sadaghiani1, Andreas Kleinschmidt

  • 1Hellen Wills Neuroscience Institute, University of California Berkeley, Berkeley, CA 94720, USA. sepideh.sadaghiani@gmail.com

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Spontaneous brain activity, though poorly understood, acts as a dynamic memory system modeling the world. Its structured patterns and adaptability influence perception, action, and cognition.

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Computational Neuroscience

Background:

  • The brain exhibits continuous, high-level intrinsic activity.
  • This spontaneous brain activity is non-stationary with structured patterns across multiple spatial scales.
  • The precise function of this ongoing neural activity remains largely unclear.

Purpose of the Study:

  • To synthesize recent research on the structure, dynamics, and behavioral impacts of spontaneous brain activity.
  • To propose a framework for understanding ongoing activity as a memory system.
  • To review the adaptive properties and functional significance of intrinsic brain dynamics.

Main Methods:

  • Literature review of empirical studies on spontaneous brain activity.
  • Analysis of dynamic properties across various temporal scales.
  • Synthesis of findings relating intrinsic activity to behavior.

Main Results:

  • Ongoing brain activity possesses a structured and itinerant nature.
  • The dynamics of spontaneous activity are malleable, adapting to cognitive demands.
  • This activity significantly impacts human perception, action, and higher cognitive functions.

Conclusions:

  • Spontaneous brain activity functions as an essential memory system, modeling the statistical regularities of the environment.
  • The dynamic and adaptive nature of intrinsic brain activity is crucial for cognitive flexibility.
  • Understanding spontaneous activity is key to comprehending brain function in perception and cognition.