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Single Trial Neural Circuit Dynamics Underlying Perceptual Decision-Making

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If you have a question about this talk, please contact John Mollon .

Perceptual decision-making is our ability to choose and perform appropriate motor acts based on learned sensory cues to achieve goals. The objective of my lab is to understand the neural circuit dynamics underlying this process of perceptual decision-making. In this three-part talk, I will present our current understanding of the decision-related dynamics in dorsal premotor cortex (PMd), a brain area implicated in selecting limb movements based on sensory cues. I will first present results that suggest that superficial layers of PMd signal action choice earlier than the deeper layers of PMd. I will then use analysis of neural population dynamics in PMd during decisions and show that models that posit an urgency signal provide better descriptions of neural dynamics and behavior compared to simple accumulator models. Finally, in the third and final part, I will discuss my recent work on using multi-area recurrent neural network models to model decision-related neural dynamics.

This talk is part of the Craik Club series.

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