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Updated: Dec 24, 2025
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Author Spotlight: Unveiling Neural Coding and Mechanisms of Visual Processing in the Superior Colliculus
Published on: April 21, 2023
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A Causal Role for Mouse Superior Colliculus in Visual Perceptual Decision-Making
Lupeng Wang1, Kerry McAlonan2, Sheridan Goldstein2
1Laboratory of Sensorimotor Research, National Eye Institute, Bethesda, Maryland 20892 lupeng.wang@gmail.com Richard.krauzlis@nih.gov.
Summary
The mouse superior colliculus (SC) is crucial for voluntary visual decisions. Inhibiting SC activity impaired orientation change detection and target selection, particularly during a specific 100-ms window.
Area of Science:
- Neuroscience
- Visual System Research
- Animal Behavior Studies
Background:
- The superior colliculus (SC) is a key visual processing center in the mouse brain, known for innate responses.
- Its role in voluntary visual behaviors like perceptual decision-making in mice remains largely unestablished.
- Previous research in other species suggests SC involvement in attention and decision-making.
Purpose of the Study:
- To investigate the causal role of the mouse superior colliculus (SC) in visual perceptual decision-making.
- To determine the temporal dynamics and specificity of SC involvement in visual choice behavior.
- To explore the SC's function in visual target selection.
Main Methods:
- Transiently inhibiting superior colliculus (SC) activity in mice of both sexes.
- Utilizing an orientation change detection task to assess visual choice behavior.
- Employing psychometric analysis to quantify detection thresholds and lapse rates.
Main Results:
- Unilateral SC inhibition caused spatially specific deficits in detecting orientation changes in the contralateral visual field.
- These deficits were temporally restricted to a 100-ms epoch coinciding with early SC visual burst responses.
- SC inhibition reduced visual detection sensitivity and impaired target selection, especially with competing stimuli.
Conclusions:
- The mouse superior colliculus (SC) is causally necessary for normal visual perceptual decision-making.
- A specific 100-ms temporal window of SC activity is critical for detecting visual changes.
- The SC plays a vital role in voluntary visual choice behaviors and target selection in mice.
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