Nous nous intéressons aux propriétés cognitives et affectives des vocalisations animales. En bref, nous pensons que les vocalisations des chimpanzés ne sont pas de purs reflets des états émotionnels des individus les produisant, mais plutôt un mix de sens et d'émotion, offrant une approche pour comprendre l'évolution du langage humain.
Sievers, C. & Gruber, T. (2020) Can nonhuman primate signals be arbitrarily meaningful like human words: An affective approach. Animal Behavior and Cognition, Special Issue Seyfarth, Cheney & Marler 1980, doi: 10.26451/abc.07.02.08.2020
Fröhlich, M., Sievers, C., Gruber, T.§, & van Schaik, C. P.§ (2019) Multimodal communication and language origins: integrating gestures and vocalizations. Biological Reviews, doi: 10.1111/brv.12535
Crockford, C. ‡, Gruber, T.‡ & Zuberbühler, K. (2018) Chimpanzee hoo variants differ according to context. Royal Society Open Science, 5: 172066, doi: 10.1098/rsos.172066
Sievers, C. & Gruber, T. (2016) Reference in humans and non-human primate communication: What does it take to refer? Animal Cognition, 19(4), 759-768. doi: 10.1007/s10071-016-0974-5
Gruber, T. & Zuberbühler, K. (2013) Vocal recruitment for joint travel in wild chimpanzees. PLOS ONE, 8(9): e76073. doi: 10.1371/journal.pone.0076073
Nous utilisons également des méthodes non-invasives telles que la spectroscopie infrarouge proche (functional Near-Infrared Spectroscopy, fNIRS) pour étudier des aspects de la communication émotionnelle chez le primate humain et non-humain.
Debracque, C., Ceravolo, L., Clay, Z., Grandjean, D. & Gruber, T. Categorization and discrimination of human and non-human primate affective vocalizations: investigation of the frontal cortex activity through fNIRS. Imaging Neurosciences. doi: 10.1101/2022.01.29.478308
Debracque, C., Slocombe, K., Clay, Z., Grandjean, D. & Gruber, T. (2023) Human recognize affective cues in primate vocalizations: Acoustic and phylogenetic perspectives. Scientific Reports, 3, 10900. doi: 10.1038/s41598-023-37558-3http://doi.org/10.1038/s41598-023-37558-3
Gruber, T. , Debracque, C., Ceravolo, L., Igloi, K., Marin Bosch, B., Frühholz, S. & Grandjean, D. (2020). Human discrimination and categorization of emotions in voices: a functional Near-Infrared Spectroscopy (fNIRS) study. Frontiers in Neurosciences. doi: 10.3389/fnins.2020.00570
Gruber, T. & Grandjean, D. (2017) A comparative neurological approach to the decoding of vocal emotional expressions in primate vocalisations. Neuroscience and Biobehavioral Reviews, 73, 182-190. doi: 10.1016/j.neubiorev.2016.12.004