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Apprezzare la buona musica non è solo appannaggio degli esseri umani. Uno studio dei ricercatori dell’Università di John Hopkins ha dimostrato infatti che le marmoset, minuscole scimmie sudamericane, presentano contemporaneamente le tre caratteristiche della percezione uditiva umana.
Altre specie animali percepiscono i toni ma le persone riconoscono meglio le differenze di toni sia alle basse frequenze che a quelle alte, colgono i piccoli cambiamenti nella diffusione tra i suoni a basse frequenze, e percepiscono le differenze tra i toni suonati in modo simultaneo alle alte frequenze (una capacità correlata alla sensibilità al ritmo).
I test, dimostrando che anche le marmoset condividono queste capacità, suggeriscono che le componenti umane della percezione dei toni si siano evolute molto prima di quanto finora pensato.
ats/ZZ
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