Imperfect integration: congruency between multiple sensory sources modulates decision-making processes

Krzeminski, Dominik and Zhang, Jiaxiang ORCID: https://orcid.org/0000-0002-4758-0394 2022. Imperfect integration: congruency between multiple sensory sources modulates decision-making processes. Attention, Perception, and Psychophysics 84 (5) , pp. 1566-1582. 10.3758/s13414-021-02434-7

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Abstract

Decision-making on the basis of multiple information sources is common. However, to what extent such decisions differ from those with a single source remains unclear. We combined cognitive modelling and neural-mass modelling to characterise the neurocognitive process underlying perceptual decision-making with single or double information sources. Ninety-four human participants performed binary decisions to discriminate the coherent motion direction averaged across two independent apertures. Regardless of the angular distance of the apertures, separating motion information into two apertures resulted in a reduction in accuracy. Our cognitive and neural-mass modelling results are consistent with the hypotheses that the addition of the second information source led to a lower signal-to-noise ratio of evidence accumulation with two congruent information sources, and a change in the decision strategy of speed–accuracy trade-off with two incongruent sources. Thus, our findings support a robust behavioural change in relation to multiple information sources, which have congruency-dependent impacts on selective decision-making subcomponents.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Psychology Cardiff University Brain Research Imaging Centre (CUBRIC)
Additional Information:	This article is licensed under a Creative Commons Attribution 4.0 International License
Publisher:	Springer Verlag (Germany)
ISSN:	1943-3921
Funders:	EPSRC
Date of First Compliant Deposit:	5 January 2022
Date of Acceptance:	23 December 2021
Last Modified:	11 Oct 2023 19:46
URI:	https://orca.cardiff.ac.uk/id/eprint/146371

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