Human-like brain hemispheric dominance in birdsong learning
| Autor: | Moorman, S., Gobes, S.M.H., Kuijpers, M., Kerkhofs, A., Zandbergen, M.A., Bolhuis, J.J., Behavioral Biology, Celbiologie, Cognitieve Neurobiologie, Sub Behavioral Biology, Dep Biologie, Sub Cell Biology, Afd Psychologische functieleer |
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| Přispěvatelé: | Behavioral Biology, Celbiologie, Cognitieve Neurobiologie, Sub Behavioral Biology, Dep Biologie, Sub Cell Biology, Afd Psychologische functieleer |
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Male
Speech production Speech perception Dissociation (neuropsychology) Lateralization of brain function Temporal lobe Species Specificity Animals Humans Learning Dominance Cerebral Zebra finch Multidisciplinary biology Infant Biological Sciences biology.organism_classification Biological Evolution Songbird Frontal Lobe nervous system International (English) behavior and behavior mechanisms Speech Perception Nidopallium Finches Vocalization Animal Psychology Neuroscience psychological phenomena and processes |
| Zdroj: | Proceedings of the National Academy of Sciences of the United States of America, 109, 12782. National Academy of Sciences |
| ISSN: | 0027-8424 |
| Popis: | Unlike nonhuman primates, songbirds learn to vocalize very much like human infants acquire spoken language. In humans, Broca’s area in the frontal lobe and Wernicke’s area in the temporal lobe are crucially involved in speech production and perception, respectively. Songbirds have analogous brain regions that show a similar neural dissociation between vocal production and auditory perception and memory. In both humans and songbirds, there is evidence for lateralization of neural responsiveness in these brain regions. Human infants already show left-sided dominance in their brain activation when exposed to speech. Moreover, a memory-specific left-sided dominance in Wernicke’s area for speech perception has been demonstrated in 2.5-mo-old babies. It is possible that auditory-vocal learning is associated with hemispheric dominance and that this association arose in songbirds and humans through convergent evolution. Therefore, we investigated whether there is similar song memory-related lateralization in the songbird brain. We exposed male zebra finches to tutor or unfamiliar song. We found left-sided dominance of neuronal activation in a Broca-like brain region (HVC, a letter-based name) of juvenile and adult zebra finch males, independent of the song stimulus presented. In addition, juvenile males showed left-sided dominance for tutor song but not for unfamiliar song in a Wernicke-like brain region (the caudomedial nidopallium). Thus, left-sided dominance in the caudomedial nidopallium was specific for the song-learning phase and was memory-related. These findings demonstrate a remarkable neural parallel between birdsong and human spoken language, and they have important consequences for our understanding of the evolution of auditory-vocal learning and its neural mechanisms. |
| Databáze: | OpenAIRE |
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