ISSN:
1420-9071
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Medicine
Notes:
Summary Hearing and the vibration sense in birds have been analysed qualitatively and quantitatively. The minimum of the intensity threshold of hearing is at about 3,200 cycles p. sec., about the birds own voice. The birds sensibility is here like that of man. The influence on threshold by damages of parts of the middle ear showed that bone conduction does not play any role in physiological hearing. Extirpation of both cochlea and lagena is followed by complete loss of hearing ability. Birds have a well-developed sense of vibration. It is possible to train birds—after extirpation of the auditory sense organ—to react to vibrations of the sitting rot, from 100 to 3,200 cycles. The maximal sensibility to vibration is found at 800 cycles. Frequency discrimination is very low. The perception of vibration in birds takes place by the means of “Strang” of the “Herbst sche Körperchen” between tibia and fibula. The present knowledges of the vibration sense explains former different results concerning the hearing of birds after extirpation of the whole labyrinth. Hearing and the sense of vibration are distinctly different senses also in birds. But some central connection seems to exist, because after successful training of one sense the task is solved also by the other without new learning.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02174430
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