Abstract
Neonatal chicks (between 1 and 3 days of age) were exposed to an intense pure tone for 48 hours, then killed immediately after removal from the sound, or 14 days later. Nonexposed age-matched animals served as controls. The inner ear was removed and the auditory receptor organ (the basilar papilla) was prepared for evaluation by scanning electron microscopy. The site of injury on the papilla was described in terms of hair-cell loss and location. The ears with no recovery showed a discrete lesion area, within which there was complete disruption of the hair-cell field and a 35% loss in hair cells. After 14 days' recovery, no hair cell loss could be detected, though the lesion could still be recognized by the disorganization of hair cells in the previously injured area. These data demonstrate hair-cell restoration after severe acoustic injury from intense sound exposure in the neonatal ear.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
