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Brain and Language: Insights from Songbirds

Brain and Language: Insights from Songbirds. Colline Poirier. Vocal learning. Sensory: hearing the model (sensitive period) Sensory-motor: practicing + auditory feedback Maintenance: auditory feedback. Proto-syntax. Starling song. A: individual whistles

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Brain and Language: Insights from Songbirds

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  1. Brain and Language: Insights from Songbirds • Colline Poirier

  2. Vocal learning • Sensory: hearing the model (sensitive period) • Sensory-motor: practicing + auditory feedback • Maintenance: auditory feedback

  3. Proto-syntax Starling song A: individual whistles B, C, D : individual warbling motifs E, F, G: click trains superimposed to individual warbling motifs H, I : speci-specific high-pitched trills

  4. Spoken language Birdsong OK • Sequence of acoustically complex sounds • Learned behaviour • Meaningful order of sounds • Referential function OK OK No

  5. Avian Brain • Gene expression • Anatomical connectivity • Functionality Jarvis et al 2005, Nat Rev Neurosci

  6. Song control system

  7. Songbird & MRI

  8. Own song recognition Birdsong: support of species and individual recognition Own song selectivity: Experience-dependent mechanisms & Auditory feedback Own song selectivity in the song control system  Own song selectivity in the auditory pathway?

  9. Own song recognition Poirier et al., 2009, J. Neurosci

  10. Own song recognition • Lateralized own song selectivity towards the right side: • Reminiscent of: own face song production neural auditory feedback control own cry own voice

  11. Own song recognition • Own song selectivity at the midbrain level • Information processing about the identity of a subject through experience-dependent mechanisms, challenging the classical perception of sub-cortical regions as primitive and non-plastic structures.

  12. Brain and Language Language precursors vocal learning

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