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Estimating How Sounds Modulate Orientation Representation in the Primary Visual Cortex Using Shallow Neural Networks.

John P McClure1,2, O Batuhan Erkat1,2, Julien Corbo1

  • 1Center for Molecular and Behavioral Neuroscience, Rutgers University-Newark, Newark, NJ, United States.

Frontiers in Systems Neuroscience
|May 26, 2022
PubMed
Summary
This summary is machine-generated.

Sounds modulate visual processing in the primary visual cortex (V1). In a task, auditory cues enhanced relevant visual stimuli but impaired irrelevant ones, showing sound

Keywords:
audiovisual detection taskneuronal representationsorientation representationprimary visual cortex (V1)sensory processingshallow neural networksound modulation

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Area of Science:

  • Neuroscience
  • Sensory Processing
  • Computational Neuroscience

Background:

  • Audiovisual perception integrates visual and auditory information, influencing accuracy and causing illusions.
  • Cross-talk between visual and auditory inputs occurs early, even in the primary visual cortex (V1).
  • Previous work showed sounds improve visual orientation representation in naive V1.

Purpose of the Study:

  • To investigate how sounds affect active visual processing when both stimuli are behaviorally relevant.
  • To determine if sound modulation in V1 differs based on the behavioral relevance of visual cues.

Main Methods:

  • Calcium imaging in mouse V1 during an audiovisual task.
  • Analysis of V1 neural activity using shallow neural networks (SNNs) to compare orientation representations.
  • Investigated SNNs' ability to categorize V1 activity and identify influential neurons.

Main Results:

  • SNNs successfully categorized V1 neural activity evoked by visual stimuli of varying orientations.
  • SNNs identified V1 neurons with high orientation and direction selectivity as computationally important.
  • In a task, sounds enhanced the representation of rewarded visual cues while impairing non-rewarded cues in V1.

Conclusions:

  • Sound's influence on V1 neural representations is context-dependent.
  • Behavioral relevance dictates whether sounds enhance or impair visual cue representation in V1.
  • Findings suggest a flexible role for auditory input in shaping visual processing based on task demands.