Khoudary, Maria;
Peters, Megan;
Bornstein, Aaron;
(2022)
Precision-weighted evidence integration predicts time-varying influence of memory on perceptual decisions.
In:
2022 Conference on Cognitive Computational Neuroscience.
(pp. pp. 638-641).
Cognitive Computational Neuroscience
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Abstract
How do we use past experiences to make sense of the present? We developed an experimental task and computational model to investigate whether human observers Bayes-optimally integrate evidence from memory and vision during cued perceptual decisions. Drawing on theory developed in the multisensory integration literature, we model the decision process as precision-weighted integration of samples from memory and vision, with the rate of accumulation defined by the relative precision of each evidence stream. The model captures two qualitatively distinct empirical findings from different task structures, suggesting this framework has the potential to identify a process fundamental to decisions relying on multiple evidence sources. The experimental task will measure how human observers actually perform this integration, which will allow us to better characterize the conditions under which humans deviate from optimal choice behavior.
| Type: | Proceedings paper |
|---|---|
| Title: | Precision-weighted evidence integration predicts time-varying influence of memory on perceptual decisions |
| Event: | 2022 Conference on Cognitive Computational Neuroscience |
| Dates: | 25 Aug 2022 - 28 Aug 2022 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.32470/ccn.2022.1292-0 |
| Publisher version: | https://2022.ccneuro.org/view_paper2104.html?Paper... |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons Attribution 3.0 Unported License. |
| Keywords: | Evidence accumulation; perceptual decisions; memory-guided behavior; uncertainty; simulation |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences > Experimental Psychology |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10216066 |
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