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Updated: Oct 19, 2025

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity
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Functional coupling between target selection and acquisition in the superior colliculus.

Jaclyn Essig1, Gidon Felsen1

  • 1Department of Physiology and Biophysics, and Neuroscience Program, University of Colorado School of Medicine, Aurora, Colorado.

Journal of Neurophysiology
|September 22, 2021
PubMed
Summary
This summary is machine-generated.

Neural circuits in the superior colliculus (SC) link target selection and movement acquisition. Choice-predictive SC neurons, including GABAergic neurons, remain active during movement, facilitating goal-directed behavior.

Keywords:
goal trackinginhibitory neuronsmidbrainsensorimotor integrationtarget acquisition

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Area of Science:

  • Neuroscience
  • Systems Neuroscience
  • Behavioral Neuroscience

Background:

  • Goal-directed behaviors require animals to select, move toward, and acquire spatial targets.
  • The superior colliculus (SC) is a key brain region involved in movement selection and initiation.
  • It remains unclear how SC circuits link target selection with successful movement termination (acquisition).

Purpose of the Study:

  • To investigate the hypothesis that SC circuitry couples target selection and acquisition.
  • To determine if SC neuronal activity during target selection contributes to a motor plan for acquisition.
  • To elucidate the neural mechanisms underlying goal-directed spatial behaviors.

Main Methods:

  • Electrophysiological recordings from mouse superior colliculus (SC) neurons during a spatial choice task.
  • Optogenetic identification of GABAergic neurons involved in target selection.
  • Activity recordings from rostral and caudal SC regions.
  • Computational modeling using an attractor network to simulate SC circuitry dynamics.

Main Results:

  • Choice-predictive SC neurons, including GABAergic neurons, showed increased activity during movement toward the selected target.
  • Rostral SC neurons exhibited higher activity than caudal SC neurons during target acquisition.
  • An attractor model demonstrated that caudal SC activity related to target selection could generate observed rostral SC activity patterns during acquisition.

Conclusions:

  • SC functional circuitry provides a mechanism for coupling target selection and acquisition.
  • Choice-related activity in the SC may generate a default motor plan for successful target acquisition.
  • This study elucidates a key neural circuit mechanism for goal-directed behavior in unpredictable environments.