Audiovisual integration increases the intentional step synchronization of side-by-side walkers
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/1822/47723 |
Resumo: | When people walk side-by-side, they often synchronize their steps. To achieve this, individuals might cross-modally match audiovisual signals from the movements of the partner and kinesthetic, cutaneous, visual and auditory signals from their own movements. Because signals from different sensory systems are processed with noise and asynchronously, the challenge of the CNS is to derive the best estimate based on this conflicting information. This is currently thought to be done by a mechanism operating as a Maximum Likelihood Estimator (MLE). The present work investigated whether audiovisual signals from the partner are integrated according to MLE in order to synchronize steps during walking. Three experiments were conducted in which the sensory cues from a walking partner were virtually simulated. In Experiment 1 seven participants were instructed to synchronize with human-sized Point Light Walkers and/or footstep sounds. Results revealed highest synchronization performance with auditory and audiovisual cues. This was quantified by the time to achieve synchronization and by synchronization variability. However, this auditory dominance effect might have been due to artifacts of the setup. Therefore, in Experiment 2 human-sized virtual mannequins were implemented. Also, audiovisual stimuli were rendered in real-time and thus were synchronous and co-localized. All four participants synchronized best with audiovisual cues. For three of the four participants results point toward their optimal integration consistent with the MLE model. Experiment 3 yielded performance decrements for all three participants when the cues were incongruent. Overall, these findings suggest that individuals might optimally integrate audiovisual cues to synchronize steps during side-by-side walking. |
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Audiovisual integration increases the intentional step synchronization of side-by-side walkersInterpersonal synchronizationAudiovisual integrationOptimal integrationSide-by-side walkingPoint-light walkersScience & TechnologySocial SciencesWhen people walk side-by-side, they often synchronize their steps. To achieve this, individuals might cross-modally match audiovisual signals from the movements of the partner and kinesthetic, cutaneous, visual and auditory signals from their own movements. Because signals from different sensory systems are processed with noise and asynchronously, the challenge of the CNS is to derive the best estimate based on this conflicting information. This is currently thought to be done by a mechanism operating as a Maximum Likelihood Estimator (MLE). The present work investigated whether audiovisual signals from the partner are integrated according to MLE in order to synchronize steps during walking. Three experiments were conducted in which the sensory cues from a walking partner were virtually simulated. In Experiment 1 seven participants were instructed to synchronize with human-sized Point Light Walkers and/or footstep sounds. Results revealed highest synchronization performance with auditory and audiovisual cues. This was quantified by the time to achieve synchronization and by synchronization variability. However, this auditory dominance effect might have been due to artifacts of the setup. Therefore, in Experiment 2 human-sized virtual mannequins were implemented. Also, audiovisual stimuli were rendered in real-time and thus were synchronous and co-localized. All four participants synchronized best with audiovisual cues. For three of the four participants results point toward their optimal integration consistent with the MLE model. Experiment 3 yielded performance decrements for all three participants when the cues were incongruent. Overall, these findings suggest that individuals might optimally integrate audiovisual cues to synchronize steps during side-by-side walking.info:eu-repo/semantics/publishedVersionElsevierUniversidade do MinhoNoy, DominicMouta, SandraLamas, JoaoBasso, DanielSilva, CarlosSantos, Jorge A.2017-11-032017-11-03T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/47723engNoy, D., Mouta, S., Lamas, J., Basso, D., Silva, C., & Santos, J. A. (2017). Audiovisual integration increases the intentional step synchronization of side-by-side walkers. Human movement science, 56(Pt B), 71.0167-94571872-764610.1016/j.humov.2017.10.00729107820https://www.ncbi.nlm.nih.gov/pubmed/29107820info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:30:15Zoai:repositorium.sdum.uminho.pt:1822/47723Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:25:22.591031Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Audiovisual integration increases the intentional step synchronization of side-by-side walkers |
title |
Audiovisual integration increases the intentional step synchronization of side-by-side walkers |
spellingShingle |
Audiovisual integration increases the intentional step synchronization of side-by-side walkers Noy, Dominic Interpersonal synchronization Audiovisual integration Optimal integration Side-by-side walking Point-light walkers Science & Technology Social Sciences |
title_short |
Audiovisual integration increases the intentional step synchronization of side-by-side walkers |
title_full |
Audiovisual integration increases the intentional step synchronization of side-by-side walkers |
title_fullStr |
Audiovisual integration increases the intentional step synchronization of side-by-side walkers |
title_full_unstemmed |
Audiovisual integration increases the intentional step synchronization of side-by-side walkers |
title_sort |
Audiovisual integration increases the intentional step synchronization of side-by-side walkers |
author |
Noy, Dominic |
author_facet |
Noy, Dominic Mouta, Sandra Lamas, Joao Basso, Daniel Silva, Carlos Santos, Jorge A. |
author_role |
author |
author2 |
Mouta, Sandra Lamas, Joao Basso, Daniel Silva, Carlos Santos, Jorge A. |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Noy, Dominic Mouta, Sandra Lamas, Joao Basso, Daniel Silva, Carlos Santos, Jorge A. |
dc.subject.por.fl_str_mv |
Interpersonal synchronization Audiovisual integration Optimal integration Side-by-side walking Point-light walkers Science & Technology Social Sciences |
topic |
Interpersonal synchronization Audiovisual integration Optimal integration Side-by-side walking Point-light walkers Science & Technology Social Sciences |
description |
When people walk side-by-side, they often synchronize their steps. To achieve this, individuals might cross-modally match audiovisual signals from the movements of the partner and kinesthetic, cutaneous, visual and auditory signals from their own movements. Because signals from different sensory systems are processed with noise and asynchronously, the challenge of the CNS is to derive the best estimate based on this conflicting information. This is currently thought to be done by a mechanism operating as a Maximum Likelihood Estimator (MLE). The present work investigated whether audiovisual signals from the partner are integrated according to MLE in order to synchronize steps during walking. Three experiments were conducted in which the sensory cues from a walking partner were virtually simulated. In Experiment 1 seven participants were instructed to synchronize with human-sized Point Light Walkers and/or footstep sounds. Results revealed highest synchronization performance with auditory and audiovisual cues. This was quantified by the time to achieve synchronization and by synchronization variability. However, this auditory dominance effect might have been due to artifacts of the setup. Therefore, in Experiment 2 human-sized virtual mannequins were implemented. Also, audiovisual stimuli were rendered in real-time and thus were synchronous and co-localized. All four participants synchronized best with audiovisual cues. For three of the four participants results point toward their optimal integration consistent with the MLE model. Experiment 3 yielded performance decrements for all three participants when the cues were incongruent. Overall, these findings suggest that individuals might optimally integrate audiovisual cues to synchronize steps during side-by-side walking. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-11-03 2017-11-03T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/1822/47723 |
url |
http://hdl.handle.net/1822/47723 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Noy, D., Mouta, S., Lamas, J., Basso, D., Silva, C., & Santos, J. A. (2017). Audiovisual integration increases the intentional step synchronization of side-by-side walkers. Human movement science, 56(Pt B), 71. 0167-9457 1872-7646 10.1016/j.humov.2017.10.007 29107820 https://www.ncbi.nlm.nih.gov/pubmed/29107820 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799132737566670848 |