Seasonal female processing of social/sexual vocal signals is state dependent - Université de Rennes Access content directly
Conference Papers Year : 2016

Seasonal female processing of social/sexual vocal signals is state dependent

Hugo Cousillas
Genta Karino
  • Function : Author
Isabelle George
Geert de Groof
  • Function : Author
  • PersonId : 963230
Martine Hausberger

Abstract

Communication requires adaptability to the interlocutors' characteristics and variations, from mere behavioural flexibility to more profound brain plasticity. While plasticity in central processing has been mostly observed early in life - during development, the need for adaptation is present throughout the life, especially in social species for which breeding periods (intersexual signals prevail) are interspersed with more "social" (non sexual) periods. Birdsong is a typical communication signal whose structure, output and function may change over the year. Here we investigated whether female European starlings’ primary auditory area (Field L) was tuned to these changes. Electrophysiological recordings revealed that Field-L auditory neurons were highly responsive to song elements that are crucial for intra-sexual social interactions during the non-breeding period, while they were highly responsive to male song elements involved in mate attraction during the breeding time. This adult plasticity in a primary sensory area, with responsiveness differing from time periods when individuals are tuned to social cues to periods when they are tuned to sexual cues, opens an interesting line of research that may be of interest for all social species, including humans, which all undergo such shifts of interest over time. The processing of these functionally relevant song elements reflect a high level of vigilance. In order to test this hypothesis we did the same recordings under anesthesia and found a clear impact of anesthesia on sensory and cognitive processes. Anesthesia induced an atypical increased neuronal responses towards biologically irrelevant sounds and prevented the seasonal neuronal tuning towards functionally relevant species-specific song elements.
No file

Dates and versions

hal-01356064 , version 1 (24-08-2016)

Identifiers

  • HAL Id : hal-01356064 , version 1

Cite

Hugo Cousillas, Genta Karino, Isabelle George, Laurianne Loison, Sandrine Alcaix, et al.. Seasonal female processing of social/sexual vocal signals is state dependent. 8th European Conference on Behavioural Biology, Université Vétérinaire de Vienne, Jul 2016, Vienne, Austria. ⟨hal-01356064⟩
74 View
0 Download

Share

Gmail Facebook X LinkedIn More