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Hearing loss in dogs after lesions of the brachium of the inferior colliculus and medial geniculate
Author(s) -
Heffner Rickye S.,
Heffner Henry E.
Publication year - 1984
Publication title -
journal of comparative neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.855
H-Index - 209
eISSN - 1096-9861
pISSN - 0021-9967
DOI - 10.1002/cne.902300206
Subject(s) - medial geniculate body , inferior colliculus , geniculate , audiogram , superior colliculus , anatomy , biology , geniculate body , hearing loss , inferior colliculi , audiology , neuroscience , medicine , visual cortex , nucleus
Seven dogs were tested for their sensitivity to pure tones following lesions of the brachium of the inferior colliculus and medial geniculate body. Bilateral section of the brachium of the inferior colliculus consistently resulted in an average hearing loss of as much as 37 dB in the midrange of the animals' audiograms. Lesions of the medial geniculate appear to produce a similar hearing loss if the ventral division of the medial geniculate is completely destroyed.