In the study of perceptual decision making, it has been widely assumed that random fluctuations of motion stimuli are irrelevant for a participant’s choice. Recently, evidence was presented that these random fluctuations have a measurable effect on the relationship between neuronal and behavioral variability, the so-called choice probability. Here, we test, in a behavioral experiment, whether stochastic motion stimuli influence the choices of human participants. Our results show that for specific stochastic motion stimuli, participants indeed make biased choices, where the bias is consistent over participants. Using a computational model, we show that this consistent choice bias is caused by subtle motion information contained in the motion noise. We discuss the implications of this finding for future studies of perceptual decision making. Specifically, we suggest that future experiments should be complemented with a stimulus-informed modeling approach to control for the effects of apparent decision evidence in random stimuli.
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:90140 |
| Date | 22 March 2024 |
| Creators | Fard, Pouyan R., Bitzer, Sebastian, Pannasch, Sebastian, Kiebel, Stefan J. |
| Publisher | Frontiers Research Foundation |
| Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
| Language | English |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, doc-type:article, info:eu-repo/semantics/article, doc-type:Text |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 1662-453X, 749728, 10.3389/fnins.2021.749728, info:eu-repo/grantAgreement/Deutsche Forschungsgemeinschaft/SFB 940: Volition und kognitive Kontrolle: Mechanismen, Modulatoren, Dysfunktionen/17883353//SFB 940/3, info:eu-repo/grantAgreement/Deutsche Forschungsgemeinschaft/Exzellenzcluster (ExStra)/390696704//EXC 2050: Centre for Tactile Internet with Human-in-the-Loop/CeTI |
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