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June 4, 2026Journal of Neuroscience

Neural population dynamics in primate multisensory cortical areas during heading discrimination

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Authors

FZFu ZengBSBinchao ShiACAihua Chen

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Overview

Randomized trial examines neural signals for motion perception in monkeys, revealing cortical specialization in decision-making.

Key Points

  • The research aims to analyze how different multisensory cortical areas process motion signals and choice-related activities during heading discrimination.
  • Developed a time-varying targeted dimensionality reduction method to analyze neuronal data.
  • Recorded neuronal activity from ventral intraparietal cortex (VIP), dorsal medial superior temporal cortex (MSTd), and parietoinsular vestibular cortex (PIVC) in six male rhesus macaques.
  • Performed a heading discrimination task to evaluate neuronal responses to visual and vestibular cues.
  • VIP exhibited strong choice-related signals and encoded both visual and vestibular motion parameters with distinct dynamics.
  • MSTd displayed primarily visual signals, showing weak vestibular and delayed choice-related activity.
  • PIVC specialized in vestibular signals with reliable encoding of velocity and acceleration, alongside modest visual inputs.

Cite This Study

Zeng et al. (2026) studied this question.

synapsesocial.com/papers/6a2117bfd499ed480b170982https://doi.org/10.1523/jneurosci.1843-25.2026
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