{"pk":29757,"title":"A spiking neuron model of inferential decision making:Urgency, uncertainty, and the speed-accuracy tradeoff","subtitle":null,"abstract":"Decision making (DM) requires the coordination of anatom-ically and functionally distinct cortical and subcortical areas.While previous computational models have studied these sub-systems in isolation, few models explore how DM holisticallyarises from their interaction. We propose a spiking neuronmodel that unifies various components of DM, then show thatthe model performs an inferential decision task in a human-likemanner. The model (a) includes populations corresponding todorsolateral prefrontal cortex, orbitofrontal cortex, right inferiorfrontal cortex, pre-supplementary motor area, and basal ganglia;(b) is constructed using 8000 leaky-integrate-and-fire neuronswith 7 million connections; and (c) realizes dedicated cognitiveoperations such as weighted valuation of inputs, accumulationof evidence for multiple choice alternatives, competition be-tween potential actions, dynamic thresholding of behavior, andurgency-mediated modulation. We show that the model repro-duces reaction time distributions and speed-accuracy tradeoffsfrom humans performing the task. These results provide be-havioral validation for tasks that involve slow dynamics andperceptual uncertainty; we conclude by discussing how addi-tional tasks, constraints, and metrics may be incorporated intothis initial framework.","language":"eng","license":{"name":"","short_name":"","text":null,"url":""},"keywords":[{"word":"Neural Engineering Framework; decision making;computational model;"}],"section":"Poster Session 2","is_remote":true,"remote_url":"https://escholarship.org/uc/item/0sb290h8","frozenauthors":[{"first_name":"Peter","middle_name":"","last_name":"Duggins","name_suffix":"","institution":"University of Waterloo","department":""},{"first_name":"Dominik","middle_name":"","last_name":"Krzeminski","name_suffix":"","institution":"Cardiff University Brain Research Imaging Centre","department":""},{"first_name":"Chris","middle_name":"","last_name":"Eliasmith","name_suffix":"","institution":"University of Waterloo","department":""},{"first_name":"Szymon","middle_name":"","last_name":"Wichary","name_suffix":"","institution":"Leiden University","department":""}],"date_submitted":null,"date_accepted":null,"date_published":"2020-01-01T18:00:00Z","render_galley":null,"galleys":[{"label":"PDF","type":"pdf","path":"https://journalpub.escholarship.org/cognitivesciencesociety/article/29757/galley/19612/download/"}]}