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Development of Auditory Sensitivity in Barn Owls (Tyto furcata pratincola)

dc.contributor.advisorCarr, Catherine E.en_US
dc.contributor.authorBaxter, Caitlin S.en_US
dc.description.abstractThe development of hearing in the juvenile barn owl was investigated using tones (500 Hz to 12 kHz) and clicks of different rates (5-90 Hz). Auditory evoked potentials (AEPs) of the auditory nerve were recorded using the auditory brainstem response (ABR). Barn owl hearing matured in a similar trend to other developing vertebrates, including kittens, budgerigars, chickens, and gerbils. The onset of hearing began sometime earlier than the second week post-hatch, and proceeded in a frequency-dependent manner. Adult-like thresholds were reached in a progression from low to high frequency, and sensitivity was mature by P60. These patterns were consistent with CAPs recorded from juvenile barn owls in Europe. ABRs for clicks presented at 5-60 Hz demonstrated increasing amplitudes and decreasing latencies as barn owl chicks aged, while ABRs for clicks presented at 90 Hz were barely distinguishable between adults and juveniles.  en_US
dc.titleDevelopment of Auditory Sensitivity in Barn Owls (Tyto furcata pratincola)en_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.contributor.departmentNeuroscience and Cognitive Scienceen_US
dc.subject.pquncontrolledauditory brainstem responseen_US
dc.subject.pquncontrolledbarn owlen_US

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