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Hear Res. 2002 Jun;168(1-2):1-11.

Serotonin in the inferior colliculus.

Author information

1
1001 E. Third St., Jordan Hall, Indiana University, , Bloomington, IN 47405, USA. lhurley@bio.indiana.edu

Abstract

It has been recognized for some time that serotonin fibers originating in raphe nuclei are present in the inferior colliculi of all mammalian species studied. More recently, serotonin has been found to modulate the responses of single inferior colliculus neurons to many types of auditory stimuli, ranging from simple tone bursts to complex species-specific vocalizations. The effects of serotonin are often quite strong, and for some neurons are also highly specific. A dramatic illustration of this is that serotonin can change the selectivity of some neurons for sounds, including species-specific vocalizations. These results are discussed in light of several theories on the function of serotonin in the IC, and of outstanding issues that remain to be addressed.

PMID:
12117504
[Indexed for MEDLINE]

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