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Multiphasic value biases in fast-paced decisions

Perceptual decisions are biased toward higher-value options when overall gains can be improved. When stimuli demand immediate reactions, the neurophysiological decision process dynamically evolves through distinct phases of growing anticipation, detection, and discrimination, but how value biases ar...

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Autores principales: Corbett, Elaine A, Martinez-Rodriguez, L Alexandra, Judd, Cian, O'Connell, Redmond G, Kelly, Simon P
Formato: Online Artículo Texto
Lenguaje:English
Publicado: eLife Sciences Publications, Ltd 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9925050/
https://www.ncbi.nlm.nih.gov/pubmed/36779966
http://dx.doi.org/10.7554/eLife.67711
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author Corbett, Elaine A
Martinez-Rodriguez, L Alexandra
Judd, Cian
O'Connell, Redmond G
Kelly, Simon P
author_facet Corbett, Elaine A
Martinez-Rodriguez, L Alexandra
Judd, Cian
O'Connell, Redmond G
Kelly, Simon P
author_sort Corbett, Elaine A
collection PubMed
description Perceptual decisions are biased toward higher-value options when overall gains can be improved. When stimuli demand immediate reactions, the neurophysiological decision process dynamically evolves through distinct phases of growing anticipation, detection, and discrimination, but how value biases are exerted through these phases remains unknown. Here, by parsing motor preparation dynamics in human electrophysiology, we uncovered a multiphasic pattern of countervailing biases operating in speeded decisions. Anticipatory preparation of higher-value actions began earlier, conferring a ‘starting point’ advantage at stimulus onset, but the delayed preparation of lower-value actions was steeper, conferring a value-opposed buildup-rate bias. This, in turn, was countered by a transient deflection toward the higher-value action evoked by stimulus detection. A neurally-constrained process model featuring anticipatory urgency, biased detection, and accumulation of growing stimulus-discriminating evidence, successfully captured both behavior and motor preparation dynamics. Thus, an intricate interplay of distinct biasing mechanisms serves to prioritise time-constrained perceptual decisions.
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spelling pubmed-99250502023-02-14 Multiphasic value biases in fast-paced decisions Corbett, Elaine A Martinez-Rodriguez, L Alexandra Judd, Cian O'Connell, Redmond G Kelly, Simon P eLife Neuroscience Perceptual decisions are biased toward higher-value options when overall gains can be improved. When stimuli demand immediate reactions, the neurophysiological decision process dynamically evolves through distinct phases of growing anticipation, detection, and discrimination, but how value biases are exerted through these phases remains unknown. Here, by parsing motor preparation dynamics in human electrophysiology, we uncovered a multiphasic pattern of countervailing biases operating in speeded decisions. Anticipatory preparation of higher-value actions began earlier, conferring a ‘starting point’ advantage at stimulus onset, but the delayed preparation of lower-value actions was steeper, conferring a value-opposed buildup-rate bias. This, in turn, was countered by a transient deflection toward the higher-value action evoked by stimulus detection. A neurally-constrained process model featuring anticipatory urgency, biased detection, and accumulation of growing stimulus-discriminating evidence, successfully captured both behavior and motor preparation dynamics. Thus, an intricate interplay of distinct biasing mechanisms serves to prioritise time-constrained perceptual decisions. eLife Sciences Publications, Ltd 2023-02-13 /pmc/articles/PMC9925050/ /pubmed/36779966 http://dx.doi.org/10.7554/eLife.67711 Text en © 2023, Corbett et al https://creativecommons.org/licenses/by/4.0/This article is distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use and redistribution provided that the original author and source are credited.
spellingShingle Neuroscience
Corbett, Elaine A
Martinez-Rodriguez, L Alexandra
Judd, Cian
O'Connell, Redmond G
Kelly, Simon P
Multiphasic value biases in fast-paced decisions
title Multiphasic value biases in fast-paced decisions
title_full Multiphasic value biases in fast-paced decisions
title_fullStr Multiphasic value biases in fast-paced decisions
title_full_unstemmed Multiphasic value biases in fast-paced decisions
title_short Multiphasic value biases in fast-paced decisions
title_sort multiphasic value biases in fast-paced decisions
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9925050/
https://www.ncbi.nlm.nih.gov/pubmed/36779966
http://dx.doi.org/10.7554/eLife.67711
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