Multiphasic value biases in fast-paced decisions

被引:2
|
作者
Corbett, Elaine A. [1 ,2 ,3 ,4 ]
Martinez-Rodriguez, L. Alexandra [3 ]
Judd, Cian [1 ]
O'Connell, Redmond G. [1 ,2 ]
Kelly, Simon P. [1 ,3 ,4 ]
机构
[1] Trinity Coll Dublin, Trinity Coll Inst Neurosci, Dublin, Ireland
[2] Trinity Coll Dublin, Sch Psychol, Dublin, Ireland
[3] Univ Coll Dublin, Sch Elect & Elect Engn, Dublin, Ireland
[4] Univ Coll Dublin, UCD Ctr Biomed Engn, Dublin, Ireland
来源
ELIFE | 2023年 / 12卷
基金
欧洲研究理事会; 欧盟地平线“2020”; 爱尔兰科学基金会;
关键词
decision making; sequential sampling models; electroencephalography; Human; PERCEPTUAL DECISION; DIFFUSION-MODEL; PRIOR PROBABILITY; REACTION-TIME; MOTOR CORTEX; DISCRIMINATION; INFORMATION; ACCUMULATION; PRESTIMULUS; POTENTIALS;
D O I
10.7554/eLife.67711
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
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.
引用
收藏
页数:24
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