Distinct sensorimotor encoding in tuft dendrites and somata associated with action, correction, and learning.

Tuft dendrites and somata in frontal cortex L5 neurons encode distinct sensorimotor information, with tuft dendrites showing specific responses to corrective actions during learning.

• Why it matters: Understanding how different parts of neurons contribute to sensorimotor encoding is crucial for unraveling the neural basis of motor learning and flexibility, yet their specific roles remain unclear.
• What they did: Using longitudinal two-photon calcium imaging, researchers examined the activity of apical tuft dendrites and somata of L5 neurons in mice during a cued dexterous action learning task, focusing on error and correction signals.
• The result: Findings reveal that somata primarily encode instructional cues and actions, while tuft dendrites are more responsive to cues and corrective actions, with learning inducing divergent plasticity, highlighting their distinct roles in sensorimotor processing.