Abstract
The existence of an interaural pathway in birds has motivated a considerable amount of research on the mechanisms of avian hearing particularly those related to sound localization. Here we show that the tympanal frequency response changes with intracranial air pressure in several species of small birds providing a potential mechanism for directional hearing especially at low frequencies. Moreover, intracranial air pressure changes in some birds during vocal production, during intense noise exposure, under anesthesia, and when the bird is stimulated by intense oure tone bursts. These results confirm the existence f a functional interaural pathway and suggest an important role for intracranial air pressure in several aspects of avian hearing.
| Translated title of the contribution | Det intra-kraniale lufttryks betydning for fugles hørelse |
|---|---|
| Original language | English |
| Title of host publication | Diversity in Auditory Mechanics. |
| Editors | E. R. Lewis, G. R. Long, R. F. Lyon, P. M. Narins, C. R. Steele, E. Hecht-Poinar |
| Number of pages | 7 |
| Place of Publication | Singapore |
| Publisher | World Scientific |
| Publication date | 28. Jun 1996 |
| Pages | 11-17 |
| ISBN (Print) | 981-02-2712-4 |
| Publication status | Published - 28. Jun 1996 |
Keywords
- Directional hearing
- middle ear muscle reflex
- Laser Doppler vibrometer