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    This summary is machine-generated.

    Sensory perception relies on neural traveling waves. This study reveals how whisker touch creates these waves in the brain, linking them to motor feedback and task performance.

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    Area of Science:

    • Neuroscience
    • Sensory Perception
    • Computational Neuroscience

    Background:

    • Understanding the neural basis of sensory perception requires linking sensory-evoked traveling waves to underlying circuit dynamics.
    • Cortical traveling waves are crucial for processing sensory information, but their precise relationship with neural circuit activity remains incompletely understood.

    Approach:

    • Simultaneous electrophysiology and two-photon calcium imaging were performed in awake mice using transparent NeuroGrids.
    • Touch-evoked cortical traveling waves and their underlying microcircuit dynamics were mapped in response to passive and active whisker touch.
    • A balanced-state network model was employed to reconcile observed neural patterns.

    Key Points:

    • Both passive and active whisker touch elicited fast early and variable late traveling waves in the barrel cortex.
    • Late-wave dynamics were modulated by stimulus value and correlated with task performance.
    • The late wave component was linked to motor feedback, sparse layer 2/3 ensemble activity, and Layer-5 apical dendritic calcium events.

    Conclusions:

    • Cortical feedback organizes a translaminar spacetime pattern that supports touch-evoked traveling waves.
    • This pattern is crucial for integrating sensory information with motor feedback and task-related computations.
    • The findings provide new insights into the neural mechanisms underlying sensory processing and perception.