Multiphasic value biases in fast-paced decisions.

Autor:	Corbett EA; Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland.; School of Psychology, Trinity College Dublin, Dublin, Ireland.; School of Electrical and Electronic Engineering and UCD Centre for Biomedical Engineering, University College Dublin, Dublin, Ireland., Martinez-Rodriguez LA; School of Electrical and Electronic Engineering and UCD Centre for Biomedical Engineering, University College Dublin, Dublin, Ireland., Judd C; Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland., O'Connell RG; Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland.; School of Psychology, Trinity College Dublin, Dublin, Ireland., Kelly SP; Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland.; School of Electrical and Electronic Engineering and UCD Centre for Biomedical Engineering, University College Dublin, Dublin, Ireland.
Jazyk:	angličtina
Zdroj:	ELife [Elife] 2023 Feb 13; Vol. 12. Date of Electronic Publication: 2023 Feb 13.
DOI:	10.7554/eLife.67711
Abstrakt:	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. Competing Interests: EC, LM, CJ, SK No competing interests declared, RO Reviewing editor, eLife (© 2023, Corbett et al.)
Databáze:	MEDLINE
Externí odkaz:	Zobrazit plný text záznamu