A concentration of visual cortex-like neurons in prefrontal cortex.

Area of Science:

• Neuroscience
• Cognitive Neuroscience
• Computational Neuroscience

Background:

• Visual recognition primarily involves the ventral stream.
• Emerging evidence suggests the ventrolateral prefrontal cortex (vlPFC) also contributes to visual processing.
• The integration of sensory and cognitive processes in vlPFC and its computational role in vision remain unclear.

Purpose of the Study:

• To investigate if vlPFC neurons possess functions comparable to those in the visual cortex.
• To determine if vlPFC neurons exhibit receptive fields, image selectivity, and generative capabilities.
• To explore the potential role of vlPFC in visual encoding and its relationship with brain-wide computations.

Main Methods:

• Electrophysiological recordings from vlPFC neurons in two male monkeys.
• Analysis of receptive fields and image selectivity of vlPFC neurons.
• Utilizing generative networks to synthesize highly activating stimuli for testing neuronal responses.

Main Results:

• A subset of vlPFC sites demonstrated properties analogous to visual cortex neurons.
• These vlPFC neurons showed receptive fields, image selectivity, and generative stimulus synthesis capacity.
• Evidence suggests potential anatomical clustering of these vlPFC sites, aligning with fMRI findings.

Conclusions:

• Subpopulations of vlPFC neurons encode world statistics, similar to visual cortex.
• Stable visual encoding in vlPFC may be essential for both local and brain-wide computational processes.
• These findings advance our understanding of prefrontal cortex involvement in visual perception.