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Related Experiment Videos

Chaos in percepts?

W Richards1, H R Wilson, M A Sommer

  • 1Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge 01239.

Biological Cybernetics
|January 1, 1994
PubMed
Summary
This summary is machine-generated.

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Perceptual multistability suggests chaotic dynamics in the brain. This study estimates the system

Area of Science:

  • Cognitive neuroscience
  • Dynamical systems theory
  • Perception

Background:

  • Perceptual phenomena like bistable figures suggest underlying complex neural mechanisms.
  • Previous research has hinted at nonlinear, deterministic systems, potentially chaotic, governing perception.

Purpose of the Study:

  • To investigate the hypothesis that perceptual mechanisms can be modeled as chaotic systems.
  • To quantify the dimensionality of these hypothetical systems.

Main Methods:

  • Analysis of data from diverse perceptual tasks.
  • Application of methods to estimate the dimensionality of dynamical systems.

Main Results:

  • Evidence supporting the chaotic system model for perception was obtained.

Related Experiment Videos

  • The estimated dimensionality of the system was found to be approximately 3.5.
  • This dimensionality estimate was consistent across a variety of perceptual tasks.

    • Conclusions:

    • Perceptual processes may indeed be governed by nonlinear, deterministic, and chaotic dynamics.
    • The dimensionality of 3.5 provides a quantitative measure of this complexity.
    • The universality of this finding across different perceptual tasks highlights a fundamental aspect of brain function.