Häusler U
German Primate Center, Göttingen.
J Acoust Soc Am. 2000 Oct;108(4):1443-50. doi: 10.1121/1.1289209.
Respiratory abdominal movements associated with vocalization were recorded in awake squirrel monkeys. Several call types, such as peeping, trilling, cackling, and err-chucks, were accompanied by large vocalization-correlated respiratory movements (VCRM) that started before vocalization. During purring, in contrast, only small VCRM were recorded that started later after vocal onset. VCRM during trill calls, a vocalization type with repetitive frequency modulation, showed a modulation in the rhythm of the frequency changes. A correlation with amplitude modulation was also present, but more variable. As high frequencies need a higher lung pressure for production than low frequencies, the modulation of VCRM seems to serve to optimize the lung pressure in relation to the vocalization frequency. The modulation, furthermore, may act as a mechanism to produce different trill variants. During err-chucks and staccato peeps, which show a large amplitude modulation, a nonmodulated VCRM occurred. This indicates the existence of a laryngeal amplitude-controlling mechanism that is independent from respiration.
在清醒的松鼠猴中记录了与发声相关的呼吸腹部运动。几种叫声类型，如啁啾声、颤音、咯咯声和呃-卡声，都伴随着在发声前开始的与发声相关的大幅度呼吸运动（VCRM）。相比之下，在咕噜声期间，只记录到在发声开始后较晚才开始的小幅度VCRM。颤音叫声（一种具有重复频率调制的发声类型）期间的VCRM显示出频率变化节奏的调制。与振幅调制也存在相关性，但更具变异性。由于高频发声比低频发声需要更高的肺压，VCRM的调制似乎是为了根据发声频率优化肺压。此外，这种调制可能作为产生不同颤音变体的一种机制。在显示大幅度振幅调制的呃-卡声和断奏啁啾声期间，出现了未调制的VCRM。这表明存在一种独立于呼吸的喉部振幅控制机制。
