Your browser doesn't support javascript.
loading
Beware! Different methods lead to divergent results on yawn contagion modulation in bonobos.
De Vittoris, Sara; Caselli, Marta; Demuru, Elisa; Gillespie, Lisa; Norscia, Ivan.
Afiliación
  • De Vittoris S; Department of Life Sciences and Systems Biology, University of Torino, Torino, Italy.
  • Caselli M; Department of Life Sciences and Systems Biology, University of Torino, Torino, Italy.
  • Demuru E; Laboratoire Dynamique Du Langage, Université de Lyon, CNRS-UMR5596, Lyon, France.
  • Gillespie L; ENES Bioacoustics Research Laboratory, University of Saint-Etienne, CRNL, CNRS UMR 5292, Inserm UMR_S, Saint-Etienne, France.
  • Norscia I; Life Sciences Department, Twycross Zoo, Twycross Zoo-East Midland Zoological Society, Atherstone, UK.
Am J Primatol ; : e23671, 2024 Aug 15.
Article en En | MEDLINE | ID: mdl-39148223
ABSTRACT
Contagious yawning (CY)-linked to physiological synchronization and possibly emotional contagion-occurs when one individual's yawn induces yawning in others. CY was investigated over different time windows (minutes from the triggering stimulus) via naturalistic or experimental studies (using real and video yawns, respectively) with contrasting results, especially in bonobos. We verified whether in bonobos result divergences may derive from different methods. We gathered yawning data on 13 bonobos at Twycross Zoo (UK) via a naturalistic (all-occurrences observations) and experimental approach (by showing yawn/control video stimuli). Based on literature, we used 1- and 3-min windows to detect CY. Due to fission-fusion management, individuals could form permanent or non-permanent associations (more/less familiar subjects under naturalistic setting). Video yawn stimuli may come from group mates/stranger models (more/less familiar subjects under the experimental setting). Stimulus type and time window affected CY modulating factors but not CY detection. Familiarity and age effect on CY showed opposite trends in 3-min trials and 1-min observations. CY was highest in oldest, non-permanently (rather than permanently) associated subjects in the naturalistic setting, but in the youngest subjects and with ingroup (rather than outgroup) models in trials. The age effect differences on CY might be due to decontextualized yawns and immature subject curiosity toward videos. The reversed familiarity effect suggests CY's context-dependent function in promoting social synchronization with socially distant group mates, as failing to coordinate as a group may lead to social disruption. Complementary methods are needed to fully understand motor replication phenomena.
Palabras clave
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Am J Primatol Año: 2024 Tipo del documento: Article País de afiliación: Italia Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Am J Primatol Año: 2024 Tipo del documento: Article País de afiliación: Italia Pais de publicación: Estados Unidos