Related Experiment Video
Updated: May 28, 2025
05:55
Modeling the Functional Network for Spatial Navigation in the Human Brain
Published on: October 13, 2023
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A thalamic hub-and-spoke network enables visual perception during action by coordinating visuomotor dynamics
Tomas Vega-Zuniga1, Anton Sumser2,3, Olga Symonova2
1Institute of Science and Technology Austria, Klosterneuburg, Austria. tomas.vegazuniga@ist.ac.at.
Nature Neuroscience
|February 10, 2025
Summary
The ventral lateral geniculate nucleus (vLGN) acts as a hub, integrating motor commands with visual flow to correct perception during action. This discovery reveals a new brain network for accurate visuomotor control.
Area of Science:
- Neuroscience
- Computational Neuroscience
- Sensory Processing
Background:
- Accurate perception and motor control require distinguishing self-generated sensations from external stimuli.
- Complex behaviors and their sensory influences pose challenges to this distinction.
Purpose of the Study:
- To identify a neural hub coordinating motor commands with visual processing.
- To investigate the role of the ventral lateral geniculate nucleus (vLGN) in action-perception integration.
Main Methods:
- Investigated the integration of optic flow signals with motor copies (saccades, locomotion, pupil dynamics) in the vLGN.
- Examined vLGN's role in correcting visual distortions and refining perception in tasks like depth estimation.
- Mapped brain-wide vLGN projections influencing visuomotor control.
Main Results:
- The vLGN functions as a corollary discharge center, integrating motor and visual information.
- vLGN signals correct action-specific visual distortions, improving perception.
- vLGN projections drive corrective actions essential for visuomotor control.
Conclusions:
- An extended corollary discharge architecture refines early visual processing.
- A distributed hub-and-spoke network coordinated by vLGN enables visual perception during action.
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