Cerebral activity in monkeys <i>Papio anubis</i> during the perception of conspecific and heterospecific agonistic vocalizations: A functional Near Infrared Spectroscopy study - Laboratoire de psychologie cognitive Accéder directement au contenu
Pré-Publication, Document De Travail Année : 2022

Cerebral activity in monkeys Papio anubis during the perception of conspecific and heterospecific agonistic vocalizations: A functional Near Infrared Spectroscopy study

Coralie Debracque
Thibaud Gruber
Romain Lacoste
  • Fonction : Auteur
Didier Grandjean

Résumé

Abstract Are conspecific emotional vocalizations special? Although often investigated in non-human primates using functional magnetic resonance imaging or positron emission tomography, it remains unclear whether the listening of conspecific vocal emotions leads to similar or different cerebral activations when compared to heterospecific calls (i.e. expressed by another primate species). Using a neuroimaging technique rarely employed in monkeys so far, functional Near Infrared Spectroscopy (fNIRS), the present study investigated cortical temporal activities during exposure to both conspecific and heterospecific calls in three female adult baboons ( Papio anubis ). The three subjects were lightly anesthetized and passively exposed to agonistic baboon and chimpanzee ( Pan troglodytes ) vocalizations, as well as energy matched white noises in order to control for this low-level acoustic feature. Despite inter-individual variabilities, permutation test analyses on the extracted OxyHemoglobin signal revealed for two subjects out of three significant differences between the passive listening of baboon versus chimpanzee stimuli. Additionally, in one subject, a modulation of the left temporal cortex activity was found for the perception of baboon calls contrasted to chimpanzee vocalizations as well as for the passive listening of baboon white noises compared to chimpanzee ones. Although the lack of generalization of those findings in all three subjects prevents us to drawn any conclusion and that more subjects would be needed, the hypothesis that baboons’ cortical temporal regions may be more sensitive to the processing of conspecific sounds compared to heterospecific stimuli is not excluded. Our study highlights that fNIRS may be a promising alternative to further investigate the auditory mechanisms at play in the right and left baboons’ temporal cortices for the processing of emotional vocalizations.

Domaines

Neurosciences
Fichier principal
Vignette du fichier
2022.04.21.489037v1.full.pdf (1.05 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03871810 , version 1 (25-11-2022)

Identifiants

Citer

Coralie Debracque, Thibaud Gruber, Romain Lacoste, Adrien Meguerditchian, Didier Grandjean. Cerebral activity in monkeys Papio anubis during the perception of conspecific and heterospecific agonistic vocalizations: A functional Near Infrared Spectroscopy study. 2022. ⟨hal-03871810⟩
34 Consultations
23 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More