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This study reveals how touch-evoked traveling brain waves in mice relate to neural circuit activity. These waves, influenced by perceived value and motor feedback, predict behavior and involve sparse neural ensemble reactivation.

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Area of Science:

  • Neuroscience
  • Sensory Perception
  • Neural Circuits

Background:

  • Understanding the neural basis of sensory perception requires linking sensory-evoked traveling waves to underlying circuit patterns.
  • Simultaneous electrophysiology and two-photon calcium imaging are crucial for mapping these dynamics.

Purpose of the Study:

  • To map touch-evoked traveling waves and underlying microcircuit dynamics in awake mice.
  • To investigate the relationship between traveling waves, perceived value, and behavioral choice.

Main Methods:

  • Simultaneous electrophysiology and two-photon calcium imaging using transparent NeuroGrids.
  • Recording neural activity and brain waves during a two-whisker discrimination task in awake mice.

Main Results:

  • Touch-evoked traveling waves exhibit fast early and sustained late components.
  • Late waves are modulated by perceived value and predict behavioral choice.
  • Late waves involve sparse layer 2/3 ensemble reactivation, stabilized by cortical feedback and linked to layer 5 dendritic events.

Conclusions:

  • Cortical feedback organizes translaminar spacetime patterns that support sparse touch-evoked traveling waves.
  • These findings provide insights into the neural mechanisms of sensory processing and decision-making.