Cargando…

Different Forms of Variability Could Explain a Difference Between Human and Rat Decision Making

When observers make rapid, difficult perceptual decisions, their response time is highly variable from trial to trial. In a visual motion discrimination task, it has been reported that human accuracy declines with increasing response time, whereas rat accuracy increases with response time. This is o...

Descripción completa

Detalles Bibliográficos
Autores principales: Nguyen, Quynh Nhu, Reinagel, Pamela
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8902138/
https://www.ncbi.nlm.nih.gov/pubmed/35273473
http://dx.doi.org/10.3389/fnins.2022.794681
_version_ 1784664530716983296
author Nguyen, Quynh Nhu
Reinagel, Pamela
author_facet Nguyen, Quynh Nhu
Reinagel, Pamela
author_sort Nguyen, Quynh Nhu
collection PubMed
description When observers make rapid, difficult perceptual decisions, their response time is highly variable from trial to trial. In a visual motion discrimination task, it has been reported that human accuracy declines with increasing response time, whereas rat accuracy increases with response time. This is of interest because different mathematical theories of decision-making differ in their predictions regarding the correlation of accuracy with response time. On the premise that perceptual decision-making mechanisms are likely to be conserved among mammals, we seek to unify the rodent and primate results in a common theoretical framework. We show that a bounded drift diffusion model (DDM) can explain both effects with variable parameters: trial-to-trial variability in the starting point of the diffusion process produces the pattern typically observed in rats, whereas variability in the drift rate produces the pattern typically observed in humans. We further show that the same effects can be produced by deterministic biases, even in the absence of parameter stochasticity or parameter change within a trial.
format Online
Article
Text
id pubmed-8902138
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher Frontiers Media S.A.
record_format MEDLINE/PubMed
spelling pubmed-89021382022-03-09 Different Forms of Variability Could Explain a Difference Between Human and Rat Decision Making Nguyen, Quynh Nhu Reinagel, Pamela Front Neurosci Neuroscience When observers make rapid, difficult perceptual decisions, their response time is highly variable from trial to trial. In a visual motion discrimination task, it has been reported that human accuracy declines with increasing response time, whereas rat accuracy increases with response time. This is of interest because different mathematical theories of decision-making differ in their predictions regarding the correlation of accuracy with response time. On the premise that perceptual decision-making mechanisms are likely to be conserved among mammals, we seek to unify the rodent and primate results in a common theoretical framework. We show that a bounded drift diffusion model (DDM) can explain both effects with variable parameters: trial-to-trial variability in the starting point of the diffusion process produces the pattern typically observed in rats, whereas variability in the drift rate produces the pattern typically observed in humans. We further show that the same effects can be produced by deterministic biases, even in the absence of parameter stochasticity or parameter change within a trial. Frontiers Media S.A. 2022-02-22 /pmc/articles/PMC8902138/ /pubmed/35273473 http://dx.doi.org/10.3389/fnins.2022.794681 Text en Copyright © 2022 Nguyen and Reinagel. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Neuroscience
Nguyen, Quynh Nhu
Reinagel, Pamela
Different Forms of Variability Could Explain a Difference Between Human and Rat Decision Making
title Different Forms of Variability Could Explain a Difference Between Human and Rat Decision Making
title_full Different Forms of Variability Could Explain a Difference Between Human and Rat Decision Making
title_fullStr Different Forms of Variability Could Explain a Difference Between Human and Rat Decision Making
title_full_unstemmed Different Forms of Variability Could Explain a Difference Between Human and Rat Decision Making
title_short Different Forms of Variability Could Explain a Difference Between Human and Rat Decision Making
title_sort different forms of variability could explain a difference between human and rat decision making
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8902138/
https://www.ncbi.nlm.nih.gov/pubmed/35273473
http://dx.doi.org/10.3389/fnins.2022.794681
work_keys_str_mv AT nguyenquynhnhu differentformsofvariabilitycouldexplainadifferencebetweenhumanandratdecisionmaking
AT reinagelpamela differentformsofvariabilitycouldexplainadifferencebetweenhumanandratdecisionmaking