TY - JOUR
T1 - An initial 'snapshot' of sensory information biases the likelihood and speed of subsequent changes of mind
AU - Turner, William
AU - Feuerriegel, Daniel
AU - Hester, Robert
AU - Bode, Stefan
N1 - Publisher Copyright:
© 2022 Turner et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, proved the original author and source are credited.
PY - 2022/1
Y1 - 2022/1
N2 - We often need to raply change our mind about perceptual decisions in order to account for new information and correct mistakes. One fundamental, unresolved question is whether information processed prior to a decision being made ('pre-decisional information') has any influence on the likelihood and speed with which that decision is reversed. We investigated this using a luminance discrimination task in which participants indicated which of two flickering greyscale squares was brightest. Following an initial decision, the stimuli briefly remained on screen, and participants could change their response. Using psychophysical reverse correlation, we examined how moment-to-moment fluctuations in stimulus luminance affected participants' decisions. This revealed that the strength of even the very earliest (pre-decisional) evence was associated with the likelihood and speed of later changes of mind. To account for this effect, we propose an extended diffusion model in which an initial 'snapshot' of sensory information biases ongoing evence accumulation.
AB - We often need to raply change our mind about perceptual decisions in order to account for new information and correct mistakes. One fundamental, unresolved question is whether information processed prior to a decision being made ('pre-decisional information') has any influence on the likelihood and speed with which that decision is reversed. We investigated this using a luminance discrimination task in which participants indicated which of two flickering greyscale squares was brightest. Following an initial decision, the stimuli briefly remained on screen, and participants could change their response. Using psychophysical reverse correlation, we examined how moment-to-moment fluctuations in stimulus luminance affected participants' decisions. This revealed that the strength of even the very earliest (pre-decisional) evence was associated with the likelihood and speed of later changes of mind. To account for this effect, we propose an extended diffusion model in which an initial 'snapshot' of sensory information biases ongoing evence accumulation.
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U2 - 10.1371/journal.pcbi.1009738
DO - 10.1371/journal.pcbi.1009738
M3 - Article
C2 - 35025889
AN - SCOPUS:85123318636
SN - 1553-734X
VL - 18
JO - PLoS computational biology
JF - PLoS computational biology
IS - 1
M1 - e1009738
ER -