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Inferring power and dominance from dyadic nonverbal interactions in autism spectrum disorder / M. KUSCHEFSKI in Autism Research, 12-3 (March 2019)
[article]
Titre : Inferring power and dominance from dyadic nonverbal interactions in autism spectrum disorder Type de document : Texte imprimé et/ou numérique Auteurs : M. KUSCHEFSKI, Auteur ; C. M. FALTER-WAGNER, Auteur ; Gary BENTE, Auteur ; Kai VOGELEY, Auteur ; Alexandra Livia GEORGESCU, Auteur Article en page(s) : p.505-516 Langues : Anglais (eng) Mots-clés : autism spectrum disorder dominance dyadic social interaction nonverbal communication power submissiveness Index. décimale : PER Périodiques Résumé : Research studies to date have revealed conflicting results with respect to the processing of nonverbal cues from social interactions in autism spectrum disorder (ASD). Therefore, the aim of the present study was to investigate the contribution of two important factors for the perception of dyadic social interactions, namely (a) the movement contingency and (b) the spatial context. To this end, 26 adult participants with ASD and 26 age-, sex-, and IQ-matched typically developed control participants observed animations presenting nonverbal interactions between two human virtual characters enacting power relationships. We manipulated (a) movement contingency by exchanging one of the two original agents with an agent from another dyad and (b) spatial context by changing agents' spatial orientation to a back-to-back position. Participants were asked to rate dominance and submissiveness of these agents. Results showed that the movement contingency manipulation affected accuracy and consistency of power perception and that the spatial context manipulation slowed down reaction times comparably in both groups. With regard to group differences, individuals with ASD were found to judge power relationships slower compared to control participants, potentially suggesting a more explicit processing style in ASD. Furthermore, the spatial context manipulation slowed down the reaction times more in the contingent compared to the non-contingent conditions only in the ASD group. These findings contribute to the ongoing debate whether individuals with ASD have difficulties in understanding nonverbal cues in a dyadic context by suggesting that they do so in more subtle ways than previously investigated. Autism Res 2019, 12: 505-516 (c) 2019 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: This study shows that the ability and speed of judging who is dominant in a social interaction depends on two factors: (a) whether their movements are matched and (b) whether they are facing each other or not. This is similarly the case for participants with and without autism. Interestingly, however, individuals with autism seem to judge generally slower, suggesting a more explicit processing style. The two factors seem to interact, suggesting that nonverbal processing difficulties are subtler than previously thought. En ligne : http://dx.doi.org/10.1002/aur.2069 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=387
in Autism Research > 12-3 (March 2019) . - p.505-516[article] Inferring power and dominance from dyadic nonverbal interactions in autism spectrum disorder [Texte imprimé et/ou numérique] / M. KUSCHEFSKI, Auteur ; C. M. FALTER-WAGNER, Auteur ; Gary BENTE, Auteur ; Kai VOGELEY, Auteur ; Alexandra Livia GEORGESCU, Auteur . - p.505-516.
Langues : Anglais (eng)
in Autism Research > 12-3 (March 2019) . - p.505-516
Mots-clés : autism spectrum disorder dominance dyadic social interaction nonverbal communication power submissiveness Index. décimale : PER Périodiques Résumé : Research studies to date have revealed conflicting results with respect to the processing of nonverbal cues from social interactions in autism spectrum disorder (ASD). Therefore, the aim of the present study was to investigate the contribution of two important factors for the perception of dyadic social interactions, namely (a) the movement contingency and (b) the spatial context. To this end, 26 adult participants with ASD and 26 age-, sex-, and IQ-matched typically developed control participants observed animations presenting nonverbal interactions between two human virtual characters enacting power relationships. We manipulated (a) movement contingency by exchanging one of the two original agents with an agent from another dyad and (b) spatial context by changing agents' spatial orientation to a back-to-back position. Participants were asked to rate dominance and submissiveness of these agents. Results showed that the movement contingency manipulation affected accuracy and consistency of power perception and that the spatial context manipulation slowed down reaction times comparably in both groups. With regard to group differences, individuals with ASD were found to judge power relationships slower compared to control participants, potentially suggesting a more explicit processing style in ASD. Furthermore, the spatial context manipulation slowed down the reaction times more in the contingent compared to the non-contingent conditions only in the ASD group. These findings contribute to the ongoing debate whether individuals with ASD have difficulties in understanding nonverbal cues in a dyadic context by suggesting that they do so in more subtle ways than previously investigated. Autism Res 2019, 12: 505-516 (c) 2019 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: This study shows that the ability and speed of judging who is dominant in a social interaction depends on two factors: (a) whether their movements are matched and (b) whether they are facing each other or not. This is similarly the case for participants with and without autism. Interestingly, however, individuals with autism seem to judge generally slower, suggesting a more explicit processing style. The two factors seem to interact, suggesting that nonverbal processing difficulties are subtler than previously thought. En ligne : http://dx.doi.org/10.1002/aur.2069 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=387 Shifted phase of EEG cross-frequency coupling in individuals with Phelan-McDermid syndrome / M. G. MARISCAL in Molecular Autism, 12 (2021)
[article]
Titre : Shifted phase of EEG cross-frequency coupling in individuals with Phelan-McDermid syndrome Type de document : Texte imprimé et/ou numérique Auteurs : M. G. MARISCAL, Auteur ; Elizabeth BERRY-KRAVIS, Auteur ; Joseph D. BUXBAUM, Auteur ; L. E. ETHRIDGE, Auteur ; R. FILIP-DHIMA, Auteur ; J. H. FOSS-FEIG, Auteur ; A. KOLEVZON, Auteur ; M. E. MODI, Auteur ; M. W. MOSCONI, Auteur ; C. A. NELSON, Auteur ; C. M. POWELL, Auteur ; P. M. SIPER, Auteur ; L. SOORYA, Auteur ; A. THALIATH, Auteur ; A. THURM, Auteur ; B. ZHANG, Auteur ; M. SAHIN, Auteur ; A. R. LEVIN, Auteur Article en page(s) : 29 p. Langues : Anglais (eng) Mots-clés : Cross-frequency coupling Eeg Phase bias Phelan-McDermid syndrome Power Index. décimale : PER Périodiques Résumé : BACKGROUND: Phelan-McDermid Syndrome (PMS) is a rare condition caused by deletion or mutation of the SHANK3 gene. Individuals with PMS frequently present with intellectual disability, autism spectrum disorder, and other neurodevelopmental challenges. Electroencephalography (EEG) can provide a window into network-level function in PMS. METHODS: Here, we analyze EEG data collected across multiple sites in individuals with PMS (n?=?26) and typically developing individuals (n?=?15). We quantify oscillatory power, alpha-gamma phase-amplitude coupling strength, and phase bias, a measure of the phase of cross frequency coupling thought to reflect the balance of feedforward (bottom-up) and feedback (top-down) activity. RESULTS: We find individuals with PMS display increased alpha-gamma phase bias (U?=?3.841, p?0.0005), predominantly over posterior electrodes. Most individuals with PMS demonstrate positive overall phase bias while most typically developing individuals demonstrate negative overall phase bias. Among individuals with PMS, strength of alpha-gamma phase-amplitude coupling was associated with Sameness, Ritualistic, and Compulsive behaviors as measured by the Repetitive Behavior Scales-Revised (Beta?=?0.545, p?=?0.011). CONCLUSIONS: Increased phase bias suggests potential circuit-level mechanisms underlying phenotype in PMS, offering opportunities for back-translation of findings into animal models and targeting in clinical trials. En ligne : http://dx.doi.org/10.1186/s13229-020-00411-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=459
in Molecular Autism > 12 (2021) . - 29 p.[article] Shifted phase of EEG cross-frequency coupling in individuals with Phelan-McDermid syndrome [Texte imprimé et/ou numérique] / M. G. MARISCAL, Auteur ; Elizabeth BERRY-KRAVIS, Auteur ; Joseph D. BUXBAUM, Auteur ; L. E. ETHRIDGE, Auteur ; R. FILIP-DHIMA, Auteur ; J. H. FOSS-FEIG, Auteur ; A. KOLEVZON, Auteur ; M. E. MODI, Auteur ; M. W. MOSCONI, Auteur ; C. A. NELSON, Auteur ; C. M. POWELL, Auteur ; P. M. SIPER, Auteur ; L. SOORYA, Auteur ; A. THALIATH, Auteur ; A. THURM, Auteur ; B. ZHANG, Auteur ; M. SAHIN, Auteur ; A. R. LEVIN, Auteur . - 29 p.
Langues : Anglais (eng)
in Molecular Autism > 12 (2021) . - 29 p.
Mots-clés : Cross-frequency coupling Eeg Phase bias Phelan-McDermid syndrome Power Index. décimale : PER Périodiques Résumé : BACKGROUND: Phelan-McDermid Syndrome (PMS) is a rare condition caused by deletion or mutation of the SHANK3 gene. Individuals with PMS frequently present with intellectual disability, autism spectrum disorder, and other neurodevelopmental challenges. Electroencephalography (EEG) can provide a window into network-level function in PMS. METHODS: Here, we analyze EEG data collected across multiple sites in individuals with PMS (n?=?26) and typically developing individuals (n?=?15). We quantify oscillatory power, alpha-gamma phase-amplitude coupling strength, and phase bias, a measure of the phase of cross frequency coupling thought to reflect the balance of feedforward (bottom-up) and feedback (top-down) activity. RESULTS: We find individuals with PMS display increased alpha-gamma phase bias (U?=?3.841, p?0.0005), predominantly over posterior electrodes. Most individuals with PMS demonstrate positive overall phase bias while most typically developing individuals demonstrate negative overall phase bias. Among individuals with PMS, strength of alpha-gamma phase-amplitude coupling was associated with Sameness, Ritualistic, and Compulsive behaviors as measured by the Repetitive Behavior Scales-Revised (Beta?=?0.545, p?=?0.011). CONCLUSIONS: Increased phase bias suggests potential circuit-level mechanisms underlying phenotype in PMS, offering opportunities for back-translation of findings into animal models and targeting in clinical trials. En ligne : http://dx.doi.org/10.1186/s13229-020-00411-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=459