3 recherche sur le mot-clé 'Isometric-contraction'

Intensity to force translation: a new effect of stimulus-response compatibility revealed by analysis of response time and electromyographic activity of a prime mover / Patricia ROMAIGUERE in Cognitive Brain Research, 1-3 (October 1993)

Public ISBD [article]  inCognitive Brain Research > 1-3 (October 1993) . - p.197-201 Titre : Intensity to force translation: a new effect of stimulus-response compatibility revealed by analysis of response time and electromyographic activity of a prime mover Type de document : texte imprimé Auteurs : Patricia ROMAIGUERE, Auteur ; Thierry HASBRIUCQ, Auteur ; Camille-Aimé POSSAMAI, Auteur ; John SEAL, Auteur Année de publication : 1993 Article en page(s) : p.197-201 Langues : Anglais (eng) Mots-clés : Fractionated-reaction-time Visual-stimulus-intensity Isometric-contraction Man Index. décimale : PER Périodiques Résumé : In reaction time studies of stimulus-response compatibility, emphasis has been placed on the influence of spatial stimulus-response relationships, but what seems to be essential for the emergence of an effect of stimulus-response compatibility is the existence of a conceptual match between stimulus and response variables. This notion was at the origin of the present study to assess the compatibility relationship between the intensity of a visual stimulus and the force of a voluntary muscle contraction. A stimulus-response compatibility effect was demonstrated. This effect was entirely due to premotoric processes. Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=781 [article] Intensity to force translation: a new effect of stimulus-response compatibility revealed by analysis of response time and electromyographic activity of a prime mover [texte imprimé] / Patricia ROMAIGUERE, Auteur ; Thierry HASBRIUCQ, Auteur ; Camille-Aimé POSSAMAI, Auteur ; John SEAL, Auteur . - 1993 . - p.197-201. Langues : Anglais (eng) in Cognitive Brain Research > 1-3 (October 1993) . - p.197-201 Mots-clés : Fractionated-reaction-time Visual-stimulus-intensity Isometric-contraction Man Index. décimale : PER Périodiques Résumé : In reaction time studies of stimulus-response compatibility, emphasis has been placed on the influence of spatial stimulus-response relationships, but what seems to be essential for the emergence of an effect of stimulus-response compatibility is the existence of a conceptual match between stimulus and response variables. This notion was at the origin of the present study to assess the compatibility relationship between the intensity of a visual stimulus and the force of a voluntary muscle contraction. A stimulus-response compatibility effect was demonstrated. This effect was entirely due to premotoric processes. Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=781

Le langage tonique / Hubert COLOMBEL in Rééducation Orthophonique, 250 (Juin 2012)

Public ISBD [article]  inRééducation Orthophonique > 250 (Juin 2012) . - p.81-92 Titre : Le langage tonique Type de document : texte imprimé Auteurs : Hubert COLOMBEL, Auteur Année de publication : 2012 Article en page(s) : p.81-92 Langues : Français (fre) Mots-clés : tonus  langage  mémoire  communication  interaction  contraction  relâchement. Index. décimale : PER Périodiques Résumé : Le corps tient son langage, le langage tonique. Il existe une incidence « affectivomotrice » dans la communication. Une mémoire du tonus s’inscrit dans le corps. Elle a une influence sur la posture, le geste et l’image de la personne. Décrypter ce langage tonique est difficile et il existe bien souvent des erreurs d’interprétation qui peuvent fausser la communication. Sur le plan thérapeutique, il est important que le praticien apprenne à lire ce langage tonique pour mieux comprendre le patient et l’aider à progresser. Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=162 [article] Le langage tonique [texte imprimé] / Hubert COLOMBEL, Auteur . - 2012 . - p.81-92. Langues : Français (fre) in Rééducation Orthophonique > 250 (Juin 2012) . - p.81-92 Mots-clés : tonus  langage  mémoire  communication  interaction  contraction  relâchement. Index. décimale : PER Périodiques Résumé : Le corps tient son langage, le langage tonique. Il existe une incidence « affectivomotrice » dans la communication. Une mémoire du tonus s’inscrit dans le corps. Elle a une influence sur la posture, le geste et l’image de la personne. Décrypter ce langage tonique est difficile et il existe bien souvent des erreurs d’interprétation qui peuvent fausser la communication. Sur le plan thérapeutique, il est important que le praticien apprenne à lire ce langage tonique pour mieux comprendre le patient et l’aider à progresser. Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=162

Priors Bias Perceptual Decisions in Autism, But Are Less Flexibly Adjusted to the Context / Laurie-Anne SAPEY-TRIOMPHE in Autism Research, 14-6 (June 2021)  

Public ISBD [article]  inAutism Research > 14-6 (June 2021) . - p.1134-1146 Titre : Priors Bias Perceptual Decisions in Autism, But Are Less Flexibly Adjusted to the Context Type de document : texte imprimé Auteurs : Laurie-Anne SAPEY-TRIOMPHE, Auteur ; Laura TIMMERMANS, Auteur ; Johan WAGEMANS, Auteur Article en page(s) : p.1134-1146 Langues : Anglais (eng) Mots-clés : Adult  Autism Spectrum Disorder/complications  Autistic Disorder  Humans  Learning  Reproducibility of Results  Visual Perception  autism  contraction bias  inflexibility  learning  predictive coding  prior  time-order effect Index. décimale : PER Périodiques Résumé : According to the predictive coding framework, percepts emerge from combinations of sensory input and prior knowledge, whose relative contributions depend on their reliability. Recent predictive coding theories suggest that Autism Spectrum Disorder (ASD) could be characterized by an atypical weighting of priors. Here, we assessed whether individuals with ASD can flexibly adjust the weight (precision) of the prior to the context. Thirty-one neurotypical adults (NT) and 26 adults with ASD participated in a visual discrimination task designed to elicit a time-order effect (TOE). The TOE reflects the integration of priors with sensory estimates. We used two experimental contexts: a narrow stimulus range (Narrow condition) and a broader range (Broad condition) in order to induce a prior with a higher and lower precision, respectively. Both groups learned a prior that biased their perception, as shown with the TOE. As expected, the NT group had a larger TOE in the Narrow condition than in the Broad condition, revealing a contextual adjustment of the prior precision. In contrast, ASD participants were more inflexible: the extent of the TOE was not modulated by the context. In addition, the accuracy increased when the stimulus range decreased in both group, which may be interpreted as a contextual adjustment of the sensory precision. To conclude, adults with and without ASD implicitly learned a prior mean, but ASD participants failed to flexibly adjust the prior precision to the context. This increased inflexibility in ASD could account for many symptoms, such as their intolerance of uncertainty. LAY SUMMARY: Based on our experience, we have expectations about our environment. Theories suggest that the symptoms encountered in autism could be due to atypical expectations, leading to an impression of an unpredictable world. Using a visual discrimination task, we showed that adults with and without autism were biased by their expectations. Yet, the extent to which expectations biased perception did not depend on the context in autism. This higher inflexibility found in autism may explain symptoms such as resistance to change. En ligne : http://dx.doi.org/10.1002/aur.2452 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=449 [article] Priors Bias Perceptual Decisions in Autism, But Are Less Flexibly Adjusted to the Context [texte imprimé] / Laurie-Anne SAPEY-TRIOMPHE, Auteur ; Laura TIMMERMANS, Auteur ; Johan WAGEMANS, Auteur . - p.1134-1146. Langues : Anglais (eng) in Autism Research > 14-6 (June 2021) . - p.1134-1146 Mots-clés : Adult  Autism Spectrum Disorder/complications  Autistic Disorder  Humans  Learning  Reproducibility of Results  Visual Perception  autism  contraction bias  inflexibility  learning  predictive coding  prior  time-order effect Index. décimale : PER Périodiques Résumé : According to the predictive coding framework, percepts emerge from combinations of sensory input and prior knowledge, whose relative contributions depend on their reliability. Recent predictive coding theories suggest that Autism Spectrum Disorder (ASD) could be characterized by an atypical weighting of priors. Here, we assessed whether individuals with ASD can flexibly adjust the weight (precision) of the prior to the context. Thirty-one neurotypical adults (NT) and 26 adults with ASD participated in a visual discrimination task designed to elicit a time-order effect (TOE). The TOE reflects the integration of priors with sensory estimates. We used two experimental contexts: a narrow stimulus range (Narrow condition) and a broader range (Broad condition) in order to induce a prior with a higher and lower precision, respectively. Both groups learned a prior that biased their perception, as shown with the TOE. As expected, the NT group had a larger TOE in the Narrow condition than in the Broad condition, revealing a contextual adjustment of the prior precision. In contrast, ASD participants were more inflexible: the extent of the TOE was not modulated by the context. In addition, the accuracy increased when the stimulus range decreased in both group, which may be interpreted as a contextual adjustment of the sensory precision. To conclude, adults with and without ASD implicitly learned a prior mean, but ASD participants failed to flexibly adjust the prior precision to the context. This increased inflexibility in ASD could account for many symptoms, such as their intolerance of uncertainty. LAY SUMMARY: Based on our experience, we have expectations about our environment. Theories suggest that the symptoms encountered in autism could be due to atypical expectations, leading to an impression of an unpredictable world. Using a visual discrimination task, we showed that adults with and without autism were biased by their expectations. Yet, the extent to which expectations biased perception did not depend on the context in autism. This higher inflexibility found in autism may explain symptoms such as resistance to change. En ligne : http://dx.doi.org/10.1002/aur.2452 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=449