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Striatal firing rate reflects head movement velocity.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Kim, Namsoo Barter, Joseph W. Sukharnikova, Tatyana Yin, Henry H.
Description	Country affiliation: United States Author Affiliation: Kim N ( Department of Psychology and Neuroscience, Duke University, Box 91050, Durham, NC, 27708, USA.)
Abstract	Although the basal ganglia have long been implicated in the initiation of actions, their contribution to movement remains a matter of dispute. Using wireless multi-electrode recording and motion tracking, we examined the relationship between single-unit activity in the sensorimotor striatum and movement kinematics. We recorded single-unit activity from medium spiny projection neurons and fast-spiking interneurons while monitoring the movements of mice using motion tracking. In Experiment 1, we trained mice to generate movements reliably by water-depriving them and giving them periodic cued sucrose rewards. We found high correlations between single-unit activity and movement velocity in particular directions. This correlation was found in both putative medium spiny projection neurons and fast-spiking interneurons. In Experiment 2, to rule out the possibility that the observed correlations were due to reward expectancy, we repeated the same procedure but added trials in which sucrose delivery was replaced by an aversive air puff stimulus. The air puff generated avoidance movements that were clearly different from movements on rewarded trials, but the same neurons that showed velocity correlation on reward trials exhibited a similar correlation on air puff trials. These experiments show for the first time that the firing rate of striatal neurons reflects movement velocity for different types of movements, whether to seek rewards or to avoid harm.
File Format	HTM / HTML
ISSN	0953816X
Issue Number	10
Volume Number	40
e-ISSN	14609568
Journal	European Journal of Neuroscience
Language	English
Publisher	Wiley-Blackwell
Publisher Date	2014-11-01
Publisher Place	France
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Neuroscience Action Potentials Physiology Corpus Striatum Head Movements Neurons Air Animals Anticipation, Psychological Cues Dietary Sucrose Administration & Dosage Electrodes, Implanted Female Male Mice, Inbred C57bl Physical Stimulation Punishment Reward Signal Processing, Computer-assisted Video Recording Water Deprivation Wireless Technology Journal Article Research Support, U.s. Gov't, Non-p.h.s.
Content Type	Text
Resource Type	Article
Subject	Neuroscience

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