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dc.contributor.author Hurley, Laura M.
dc.contributor.author Rebec, George V.
dc.contributor.author Hall, Ian C.
dc.date.accessioned 2012-03-14T02:06:42Z
dc.date.available 2012-03-14T02:06:42Z
dc.date.issued 2010-04-01
dc.identifier.citation Hall, I. C., Rebec, G. V., Hurley, L. M. (2010). Serotonin in the inferior colliculus fluctuates with behavioral state and environmental stimuli.Journal of Experimental Biology, 213:1009-1017. en
dc.identifier.uri http://jeb.biologists.org/content/213/7/1009.full en
dc.identifier.uri http://hdl.handle.net/2022/14266
dc.description.abstract Neuromodulation by serotonin (5-HT) could link behavioral state and environmental events with sensory processing. Within the auditory system, the presence of 5-HT alters the activity of neurons in the inferior colliculus (IC), but the conditions that influence 5-HT neurotransmission in this region of the brain are unknown. We used in vivo voltammetry to measure extracellular 5-HT in the IC of behaving mice to address this issue. Extracellular 5-HT increased with the recovery from anesthesia, suggesting that the neuromodulation of auditory processing is correlated with the level of behavioral arousal. Awake mice were further exposed to auditory (broadband noise), visual (light) or olfactory (2,5-dihydro-2,4,5-trimethylthiazoline, TMT) stimuli, presented with food or confined in a small arena. Only the auditory stimulus or restricted movement increased the concentration of extracellular 5-HT in the IC. Changes occurred within minutes of stimulus onset, with the auditory stimulus increasing extracellular 5-HT by an average of 5% and restricted movement increasing it by an average of 14%. These findings suggest that the neuromodulation of auditory processing by 5-HT is a dynamic process that is dependent on internal state and behavioral conditions. en
dc.language.iso en_US en
dc.publisher The Company of Biologists Ltd en
dc.rights © 2010. Published by The Company of Biologists Ltd en
dc.subject stress en
dc.subject sensory en
dc.subject voltammetry en
dc.subject neuromodulation en
dc.subject auditory en
dc.subject inferior colliculus en
dc.subject serotonin en
dc.title Serotonin in the inferior colliculus fluctuates with behavioral state and environmental stimuli en
dc.type Article en


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