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Related Concept Videos

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Cognitive psychology emerged as a significant field in the mid-20th century. It focused on understanding humans' internal mental processes. This approach emphasizes how people perceive, remember, think, and solve problems—elements critical to human cognition.
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Neuronal and Behavioral Responses to Naturalistic Texture Images in Macaque Monkeys.

Corey M Ziemba1, Robbe L T Goris1, Gabriel M Stine1

  • 1Center for Neural Science, New York University, New York, NY.

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
|August 28, 2024
PubMed
Summary

Neurons in visual cortex V2 show greater sensitivity to texture than V1, but texture perception likely develops further downstream. Neural activity supporting texture decisions is unstable across individuals and tasks.

Keywords:
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Area of Science:

  • Neuroscience
  • Visual Perception
  • Computational Neuroscience

Background:

  • Texture is crucial for scene understanding in natural vision.
  • Previous studies suggest V2 neurons are more selective for texture statistics than V1 neurons.

Purpose of the Study:

  • To investigate the relationship between neuronal activity in macaque V1 and V2 and behavioral judgments of texture naturalness.
  • To determine if V2 neuronal sensitivity aligns more closely with behavioral performance than V1 neuronal sensitivity.

Main Methods:

  • Recorded single-cell activity in V1 and V2 of macaque monkeys.
  • Trained monkeys on a texture discrimination task using stimuli ranging from naturalistic to phase-randomized noise.
  • Analyzed neuronal information content and choice-predictive activity relative to behavioral reports.

Main Results:

  • Individual V1 and V2 neurons carried less information about texture naturalness than behavioral judgments.
  • V2 neuronal sensitivity was significantly closer to behavioral performance than V1 neuronal sensitivity.
  • Choice-correlated V1 and V2 activity predicted choices in one monkey but not the other.

Conclusions:

  • Neural mechanisms supporting texture perception likely extend beyond V2.
  • Choice-correlated neural activity in early visual areas is observer- and task-dependent.
  • This activity is not tightly linked to neuronal sensitivity and may not directly represent perceptual decision formation.