Computational Neuroscience Journal Club

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• Matthew Kerr (CBL)
• Thursday 15 December 2016, 16:00-17:00
• Cambridge University Engineering Department, CBL, BE-438 (http://learning.eng.cam.ac.uk/Public/Directions).

If you have a question about this talk, please contact Daniel McNamee.

Matthew Kerr will cover:

• Computational Precision of Mental Inference as Critical Source of Human Choice Suboptimality
• Jan Drugowitsch, Valentin Wyart, Anne-Dominique Devauchelle, Etienne Koechlin
• Neuron (December 2016)
• http://www.cell.com/neuron/fulltext/S0896-6273(16)30843-1 (abstract included below)

Abstract: Making decisions in uncertain environments often requires combining multiple pieces of ambiguous information from external cues. In such conditions, human choices resemble optimal Bayesian inference, but typically show a large suboptimal variability whose origin remains poorly understood. In particular, this choice suboptimality might arise from imperfections in mental inference rather than in peripheral stages, such as sensory processing and response selection. Here, we dissociate these three sources of suboptimality in human choices based on combining multiple ambiguous cues. Using a novel quantitative approach for identifying the origin and structure of choice variability, we show that imperfections in inference alone cause a dominant fraction of suboptimal choices. Furthermore, two-thirds of this suboptimality appear to derive from the limited precision of neural computations implementing inference rather than from systematic deviations from Bayes-optimal inference. These findings set an upper bound on the accuracy and ultimate predictability of human choices in uncertain environments.

This talk is part of the Computational Neuroscience series.

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