@article{ref1,
title="Perceptual decisions are biased toward relevant prior choices",
journal="Scientific reports",
year="2021",
author="Baror, Shira and Feigin, Helen and Zaidel, Adam and Bar, Moshe",
volume="11",
number="1",
pages="e648-e648",
abstract="Perceptual decisions are biased by recent perceptual history-a phenomenon termed 'serial dependence.' Here, we investigated what aspects of perceptual decisions lead  to serial dependence, and disambiguated the influences of low-level sensory  information, prior choices and motor actions. Participants discriminated whether a  brief visual stimulus lay to left/right of the screen center. Following a series of  biased 'prior' location discriminations, subsequent 'test' location discriminations  were biased toward the prior choices, even when these were reported via different  motor actions (using different keys), and when the prior and test stimuli differed  in color. By contrast, prior discriminations about an irrelevant stimulus feature  (color) did not substantially influence subsequent location discriminations, even  though these were reported via the same motor actions. Additionally, when color (not  location) was discriminated, a bias in prior stimulus locations no longer influenced  subsequent location discriminations. Although low-level stimuli and motor actions  did not trigger serial-dependence on their own, similarity of these features across  discriminations boosted the effect. These findings suggest that relevance across  perceptual decisions is a key factor for serial dependence. Accordingly, serial  dependence likely reflects a high-level mechanism by which the brain predicts and  interprets new incoming sensory information in accordance with relevant prior  choices.<p /> <p>Language: en</p>",
language="en",
issn="2045-2322",
doi="10.1038/s41598-020-80128-0",
url="http://dx.doi.org/10.1038/s41598-020-80128-0"
}