Heather J Yu

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Male and female African clawed frogs (Xenopus laevis) produce rhythmic, sexually distinct vocalizations as part of courtship and mating. We found that Xenopus vocal behavior is governed by a sexually dimorphic central pattern generator (CPG) and that fictive vocalizations can be elicited from an in vitro brain preparation by application of serotonin or by(More)
Serotonin initiates various rhythmic behaviors in vertebrates. Previously we have shown that serotonergic neurons innervate the central vocal pathway in the African clawed frog (Xenopus laevis). We also discovered that exogenous serotonin applied to isolated brains in vitro activates fictive vocalizations by activating 5-HT(2C)-like receptors. In this(More)
Vocalizations of male and female African clawed frogs (Xenopus laevis) are generated by brain stem central pattern generators. Serotonin (5-HT) is likely important for vocal initiation because, when applied in vitro, sex-typical fictive vocalizations are evoked from isolated brains. To explore the mechanisms underlying vocal initiation, we identified the(More)
47 Serotonin initiates various rhythmic behaviors in vertebrates. Previously, we have shown 48 that serotonergic neurons innervate the central vocal pathway in the African clawed frog 49 (Xenopus laevis). We also discovered that exogenous serotonin applied to isolated brains in vitro 50 activates fictive vocalizations by activating 5-HT2C-like receptors. In(More)
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