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 School of Biological Sciences > Theses |
| Depositing User: | Sasha Luks-Morgan |
| Date: | 22 April 2019 |
| Date Deposited: | 17 Aug 2021 13:04 |
| Last Modified: | 27 May 2022 19:52 |
| URI: | https://repository.cshl.edu/id/eprint/40323 |
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