A value-based explanation for lapses in perceptual decisions

Pisupati, Sashank (April 2019) A value-based explanation for lapses in perceptual decisions. PhD thesis, Cold Spring Harbor.

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Abstract

This thesis aims to provide a formal treatment of deviations from optimality in perceptual decision-making, and reconsider these deviations from the perspective of value-based decision making, ultimately providing a synthesis of the two. In Chapter 2, I describe deviations from optimal multisensory decisions in rats, focusing in particular on “lapses", an often ignored form of error that seems to plague many perceptual studies. In Chapter 3, I outline the traditional models of lapses, and use behavioral manipulations to demonstrate their insufficiency. In Chapter 4, I propose that lapses can instead arise deliberately from trying to balance an exploration-exploitation tradeoff, and test the predictions of this model by manipulating value. Finally in Chapter 5, I discuss how lapses can informative about deficits in decision making, and leverage them to reconcile the role of prefrontal cortex and striatum in perceptual and value-based decisions.

Item Type: Thesis (PhD)
Subjects: organism description > animal behavior > decision making
neurobiology > neuroscience
CSHL Authors:
Communities: CSHL labs > Churchland lab
Depositing User: Sasha Luks-Morgan
Date: 22 April 2019
Date Deposited: 17 Aug 2021 13:04
Last Modified: 17 Aug 2021 13:04
URI: https://repository.cshl.edu/id/eprint/40323

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