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  • 1
    ISSN: 1433-8491
    Keywords: Primate vocalization ; Discrete units ; Amplitude changes ; “Dialogues”
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The identification of units used in primate vocal behaviour and the isolation of components essential for intraspecific communication (i.e. having a function) from possibly inessential ones (i.e. having no function) is an absolute prerequisite to a successful analysis of primate vocalizations. For most calls special methods are required because neither the essentials of structure nor their relation to function are known, nor the context involved. For calls without any distinct frequency modulation we showed that the animals utter calls containing categorical amplitude changes. The changes within one call are either very small or very large. The positions or the very large amplitude changes within a call depend on the social situation the animals were subjected to and affect the immediately succeeding vocalization of the conspecific. This proves that in vocal communication discrete components are produced (structure) as well as used (function).
    Type of Medium: Electronic Resource
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