title: Dynamic control of auditory activity during sleep: correlation between song response and EEG.
abstract: The song nucleus high vocal center (HVC) sends neural signals for song production and receives auditory input. By using electroencephalography (EEG) to objectively identify wake/sleep state, we show that HVC auditory responses change with physiological states. Comparison of EEG and HVC records revealed that HVC response to auditory stimuli is greatest during slow-wave sleep. During slow-wave sleep, HVC neurons responded preferentially to the bird's own song. Strikingly, both spontaneous and forced waking during sleep caused HVC auditory responses to cease within milliseconds of an EEG-measured state change. State-dependent phenomena in downstream nuclei, such as robustus archistriatalis, are likely to be derivatives of those in HVC.
authors.affiliation: Division of Biology, California Institute of Technology, MC 216-76, Pasadena, CA 91125, USA. tersea@etho.caltech.edu
authors.forename: T A
authors.initials: TA
authors.lastname: Nick
authors.forename: M
authors.initials: M
authors.lastname: Konishi
mesh_terms: D000818:Animals; D001307:Auditory Perception / Q000502:physiology*; D004569:Electroencephalography; D004594:Electrophysiology; D008297:Male; D009474:Neurons / Q000502:physiology; D012890:Sleep / Q000502:physiology*; D020308:Songbirds / Q000502:physiology*