title: Transient striatal gamma local field potentials signal movement initiation in rats.
abstract: Transient coherent neural oscillations, as indicated by local field potentials, are thought to underlie key perceptual and cognitive events. We report a transient, state-dependent 50 Hz oscillation recorded from electrodes placed in the striatum of awake, behaving rats. These coherent oscillations, which we term gamma(50), occurred in brief (150 ms) events co-incident with the initiation of movement. On navigation tasks, the animal's speed increased dramatically at the precise moment of the gamma(50) event. This synchronous oscillation may provide a key to understanding striatal function, as well as basal ganglia pathology, which often impairs the control of voluntary movements.
authors.affiliation: Department of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA.
authors.forename: Beth
authors.initials: B
authors.lastname: Masimore
authors.forename: Neil C
authors.initials: NC
authors.lastname: Schmitzer-Torbert
authors.forename: James
authors.initials: J
authors.lastname: Kakalios
authors.forename: A David
authors.initials: AD
authors.lastname: Redish
mesh_terms: D000818:Animals; D003342:Corpus Striatum / Q000502:physiology*; D008297:Male; D009043:Motor Activity / Q000502:physiology*; D009474:Neurons / Q000502:physiology*; D051381:Rats