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Related Experiment Videos

How the brain keeps the eyes still

H S Seung1

  • 1Bell Laboratories, Lucent Technologies, Murray Hill, NJ 07974, USA.

Proceedings of the National Academy of Sciences of the United States of America
|November 12, 1996
PubMed
Summary
This summary is machine-generated.

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The brain maintains eye position using a neural integrator network that stores eye movement memories. This network exhibits line attractor dynamics, suggesting a mechanism for stable gaze control.

Area of Science:

  • Neuroscience
  • Computational Neuroscience
  • Systems Neuroscience

Background:

  • The brain stabilizes gaze by maintaining eye position, a function reliant on memory.
  • Persistent neural activity in the brainstem and cerebellum's neural integrator network is thought to represent horizontal eye position memory.

Purpose of the Study:

  • To reinterpret existing experimental data within a novel theoretical framework.
  • To propose and provide evidence for the "attractor hypothesis" regarding neural integrator function.

Main Methods:

  • Reinterpretation of existing experimental data on neural integrator activity.
  • Theoretical modeling of neural networks exhibiting line attractor dynamics.
  • Analysis of positive feedback mechanisms in neural network learning.

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Main Results:

  • Existing data support the "attractor hypothesis," where neural activity forms a line attractor.
  • Line attractor dynamics can be generated in neural networks through precise tuning of positive feedback.
  • This provides a potential mechanism for the brain's persistent representation of eye position.

Conclusions:

  • The neural integrator likely operates via line attractor dynamics.
  • This mechanism offers a robust explanation for stable eye position memory.
  • Understanding these dynamics can inform future research in neural computation and control systems.