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The striatum integrates convergent input from the cortex, thalamus, and midbrain, and has a powerful influence over motivated behavior via outputs to downstream basal ganglia nuclei. Although the anatomy and physiology of distinct classes of striatal neurons have been intensively studied, the specific functions of these cell subpopulations have been more difficult to address. Recently, application...
Plasticity at corticostriatal synapses is thought to underlie both normal and aberrant forms of reinforcement-driven learning. Studies in brain slices have found bidirectional, spike-timing dependent plasticity in striatum; however it is not known whether similar rules govern corticostriatal plasticity in awake behaving animals. To assess whether behavioral state is a key regulator of plasticity in...
Neuromotor prostheses (NMPs) seek to replace motor functions in paralyzed humans by controlling external devices directly from recording contacts placed within the brain (in effect, bypassing the damaged neural tissue). Studies to date have focused on cortical areas for NMP control, but deeper brain structures have also been implicated in generating motor commands. Recent studies combining non-invasive...
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