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Focused attention vs. crossmodal signals paradigm: deriving predictions from the time-window-of-integration model

In the crossmodal signals paradigm (CSP) participants are instructed to respond to a set of stimuli from different modalities, presented more or less simultaneously, as soon as a stimulus from any modality has been detected. In the focused attention paradigm (FAP), on the other hand, responses shoul...

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Detalles Bibliográficos
Autores principales: Colonius, Hans, Diederich, Adele
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3430010/
https://www.ncbi.nlm.nih.gov/pubmed/22952460
http://dx.doi.org/10.3389/fnint.2012.00062
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author Colonius, Hans
Diederich, Adele
author_facet Colonius, Hans
Diederich, Adele
author_sort Colonius, Hans
collection PubMed
description In the crossmodal signals paradigm (CSP) participants are instructed to respond to a set of stimuli from different modalities, presented more or less simultaneously, as soon as a stimulus from any modality has been detected. In the focused attention paradigm (FAP), on the other hand, responses should only be made to a stimulus from a pre-defined target modality and stimuli from non-target modalities should be ignored. Whichever paradigm is being applied, a typical result is that responses tend to be faster to crossmodal stimuli than to unimodal stimuli, a phenomenon often referred to as “crossmodal interaction.” Here, we investigate predictions of the time-window-of-integration (TWIN) modeling framework previously proposed by the authors. It is shown that TWIN makes specific qualitative and quantitative predictions on how the two paradigms differ with respect to the probability of multisensory integration and the amount of response enhancement, including the effect of stimulus intensity (“inverse effectiveness”). Introducing a decision-theoretic framework for TWIN further allows comparing the two paradigms with respect to the predicted optimal time window size and its dependence on the prior probability that the crossmodal stimulus information refers to the same event. In order to test these predictions, experimental studies that systematically compare crossmodal effects under stimulus conditions that are identical except for the CSP-FAP instruction should be performed in the future.
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spelling pubmed-34300102012-09-05 Focused attention vs. crossmodal signals paradigm: deriving predictions from the time-window-of-integration model Colonius, Hans Diederich, Adele Front Integr Neurosci Neuroscience In the crossmodal signals paradigm (CSP) participants are instructed to respond to a set of stimuli from different modalities, presented more or less simultaneously, as soon as a stimulus from any modality has been detected. In the focused attention paradigm (FAP), on the other hand, responses should only be made to a stimulus from a pre-defined target modality and stimuli from non-target modalities should be ignored. Whichever paradigm is being applied, a typical result is that responses tend to be faster to crossmodal stimuli than to unimodal stimuli, a phenomenon often referred to as “crossmodal interaction.” Here, we investigate predictions of the time-window-of-integration (TWIN) modeling framework previously proposed by the authors. It is shown that TWIN makes specific qualitative and quantitative predictions on how the two paradigms differ with respect to the probability of multisensory integration and the amount of response enhancement, including the effect of stimulus intensity (“inverse effectiveness”). Introducing a decision-theoretic framework for TWIN further allows comparing the two paradigms with respect to the predicted optimal time window size and its dependence on the prior probability that the crossmodal stimulus information refers to the same event. In order to test these predictions, experimental studies that systematically compare crossmodal effects under stimulus conditions that are identical except for the CSP-FAP instruction should be performed in the future. Frontiers Media S.A. 2012-08-29 /pmc/articles/PMC3430010/ /pubmed/22952460 http://dx.doi.org/10.3389/fnint.2012.00062 Text en Copyright © 2012 Colonius and Diederich. http://www.frontiersin.org/licenseagreement This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in other forums, provided the original authors and source are credited and subject to any copyright notices concerning any third-party graphics etc.
spellingShingle Neuroscience
Colonius, Hans
Diederich, Adele
Focused attention vs. crossmodal signals paradigm: deriving predictions from the time-window-of-integration model
title Focused attention vs. crossmodal signals paradigm: deriving predictions from the time-window-of-integration model
title_full Focused attention vs. crossmodal signals paradigm: deriving predictions from the time-window-of-integration model
title_fullStr Focused attention vs. crossmodal signals paradigm: deriving predictions from the time-window-of-integration model
title_full_unstemmed Focused attention vs. crossmodal signals paradigm: deriving predictions from the time-window-of-integration model
title_short Focused attention vs. crossmodal signals paradigm: deriving predictions from the time-window-of-integration model
title_sort focused attention vs. crossmodal signals paradigm: deriving predictions from the time-window-of-integration model
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3430010/
https://www.ncbi.nlm.nih.gov/pubmed/22952460
http://dx.doi.org/10.3389/fnint.2012.00062
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