Parallel Lemniscal and Non-Lemniscal Sources Control Auditory Responses in the Orbitofrontal Cortex (OFC)

Area of Science:

• Neuroscience
• Auditory processing
• Decision-making

Background:

• The orbitofrontal cortex (OFC) is vital for flexible behavior and stimulus value updating.
• Auditory responses in the mouse OFC are largely uncharacterized.
• Understanding OFC sensory processing is key to deciphering adaptive behavior.

Purpose of the Study:

• To investigate the auditory response properties of single neurons in the mouse OFC.
• To explore the neural mechanisms shaping OFC auditory responses.
• To link OFC auditory processing to flexible behavioral control.

Main Methods:

• In vivo electrophysiology in awake, head-fixed mice.
• Auditory stimulus presentation with varying histories.
• Analysis of single-unit firing rates and adaptation properties.

Main Results:

• Mouse OFC neurons display unique auditory oddball detection.
• Responses exhibit long timescales of adaptation, indicating stimulus-history dependence.
• Auditory thalamic pathways (lemniscal and non-lemniscal) differentially shape OFC responses.

Conclusions:

• OFC auditory deviant selectivity signals environmental changes.
• Non-lemniscal pathway and amygdala contribute to persistent activity.
• These OFC properties support updating stimulus-outcome associations for adaptive behavior.