L’image présentée ici est une scanographie PET du cerveau, elle montre que le langage est principalement traité dans l’hémisphère gauche du cerveau et la musique dans l’hémisphère droit.
Il est possible d’augmenter l’activité neurologique dans les deux hémisphères cérébraux en combinant musique, son et langage. C’est ce qui se passe avec les CD ABR.
Le glucose est la principale source d’énergie du cerveau, une augmentation de la consommation de glucose traduit une augmentation de l’activité cérébrale. Dans l’image ci-dessous les zones en rouge indiquent les aires ayant un surcroît d’activité cérébrale mesurée par la consommation de glucose.
L’hémisphère gauche est plus actif quand le cerveau est exposé au langage alors que l’hémisphère droit est davantage stimulé par la musique. Les deux hémisphères sont activés lorsque le cerveau entend une combinaison de langage, musique et son.
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