NEURAL NETWORK DYNAMICS UNDERLYING THE FLEXIBLE ADJUSTMENT OF TEMPORAL EVIDENCE WEIGHTING IN PERCEPTUAL DECISIONS
Citlalli Vivar, Aaron J. Levi, Alexander C. Huk, Klaus Wimmer · IBRO Neuroscience Reports · 2023
During perceptual decision-making, sensory information can be accumulated using distinct temporal weighting strategies, weighting some stimulus epochs more heavily than others. A recent study has shown that primates can flexibly switch between early weighting (primacy) and late weighting (recency) in a motion discrimination task, following the stimulus statistics. To shed light on how this flexible adjustment can be mechanistically implemented at the neural circuit level, we used a two-area firing rate model composed of a sensory and a decision circuit with bottom-up and top-down connectivity.