Neuroscience Seminar : Signatures of time-dependent urgency during human perceptual choice
Abstract: Decision-makers must often balance the desire to accumulate information with the costs of protracted deliberation. Optimal, reward-maximizing decision-making can require dynamic adjustment of this speed/accuracy trade-off over the course of a single decision. However, the extent to which human decision-makers might flexibly deploy such a time-dependent decision policy has been the subject of much recent debate. In this talk, I will present a series of studies identifying several signatures of time-dependency in human perceptual decision-making, along with their possible neural source. Targeted behavioural analyses and quantitative model comparisons revealed that human observers responded to deadline-induced speed pressure by lowering their criterion on accumulated perceptual evidence as the deadline approached – as was required to maximise performance-related rewards in this context. In the brain, this time-dependent effect was reflected in dynamic…
Link to Full Article: Neuroscience Seminar : Signatures of time-dependent urgency during human perceptual choice
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