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Brain and Language: Insights from Songbirds Colline Poirier
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Vocal learning Sensory: hearing the model (sensitive period) Sensory-motor: practicing + auditory feedback Maintenance: auditory feedback
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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
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Spoken language Sequence of acoustically complex sounds Learned behaviour Meaningful order of sounds Referential function OK Birdsong No OK
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Gene expression Anatomical connectivity Functionality Jarvis et al 2005, Nat Rev Neurosci Avian Brain
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Song control system
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Songbird & MRI
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Own song recognition Own song selectivity in the song control system Own song selectivity in the auditory pathway? Birdsong: support of species and individual recognition Own song selectivity: Experience-dependent mechanisms & Auditory feedback
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Poirier et al., 2009, J. Neurosci Own song recognition
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Lateralized own song selectivity towards the right side: Reminiscent of: song productionneural auditory feedback controlown voiceown cry own face
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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.
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Brain and Language vocal learningLanguage precursors
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