ERIC Number: EJ1002052
Record Type: Journal
Publication Date: 2013-Jan
Abstractor: As Provided
Reference Count: 0
Mouse Vocal Communication System: Are Ultrasounds Learned or Innate?
Arriaga, Gustavo; Jarvis, Erich D.
Brain and Language, v124 n1 p96-116 Jan 2013
Mouse ultrasonic vocalizations (USVs) are often used as behavioral readouts of internal states, to measure effects of social and pharmacological manipulations, and for behavioral phenotyping of mouse models for neuropsychiatric and neurodegenerative disorders. However, little is known about the neurobiological mechanisms of rodent USV production. Here we discuss the available data to assess whether male mouse song behavior and the supporting brain circuits resemble those of known vocal non-learning or vocal learning species. Recent neurobiology studies have demonstrated that the mouse USV brain system includes motor cortex and striatal regions, and that the vocal motor cortex sends a direct sparse projection to the brainstem vocal motor nucleus ambiguous, a projection previously thought be unique to humans among mammals. Recent behavioral studies have reported opposing conclusions on mouse vocal plasticity, including vocal ontogeny changes in USVs over early development that might not be explained by innate maturation processes, evidence for and against a role for auditory feedback in developing and maintaining normal mouse USVs, and evidence for and against limited vocal imitation of song pitch. To reconcile these findings, we suggest that the trait of vocal learning may not be dichotomous but encompass a broad spectrum of behavioral and neural traits we call the continuum hypothesis, and that mice possess some of the traits associated with a capacity for limited vocal learning. (Contains 8 figures.)
Descriptors: Brain Hemisphere Functions, Feedback (Response), Animals, Psychomotor Skills, Diagnostic Tests, Drug Therapy, Genetics, Learning Processes, Auditory Stimuli
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Authoring Institution: N/A