This is a Multiple-PI R01 proposal for coordinated investigation of the striatum, a brain structure critically involved in normal movement and motivation. Altered striatal function underlies a range of serious, common neurological disorders, including Parkinson's Disease and dystonia. Yet the mechanisms by which this structure normally processes information, and how this can go awry, are not well understood. One particular cell type, the fast-spiking interneuron (FSI), is rare but has a disproportionate influence over other striatal neurons. Loss of FSIs has been observed in animal models of dystonia and in human Tourette syndrome. In recent studies we have observed activation of FSIs as highly trained yet unwanted choices need to be suppressed, and that selective suppression of FSIs results in dystonia-like symptoms. FSIs thus appear to have a key coordinating role within striatal networks, and there is a pressing need to better understand their physiological and behavioral functions. The proposed complementary experiments in brain slices and awake behaving animals make full use of advanced electrophysiological, pharmacological and optogenetic methods.
Aim 1 examines how distinct inputs from cortex, thalamus, and globus pallidus influence FSI firing patterns, both spontaneously and at critical moments of choice task performance.
Aim 2 examines the conditions under which FSIs control striatal projection cells of the two major output pathways, and how FSI suppression affects network dynamics and behavior. Finally, Aim 3 investigates the consequences of dopamine loss on striatal microcircuits, examining changes in local connectivity and firing patterns that may underlie core movement difficulties in Parkinson's Disease. The long-term goals of this research program are to determine the fundamental operational principles of striatal circuits from sub-cellular to network levels. This knowledge would be of immense value in designing improved therapies for Parkinson's Disease, dystonia, Tourette Syndrome and other serious brain disorders.

Public Health Relevance

This proposal aims to reveal how microcircuitry within a specific brain structure contributes to normal behavioral control, and how dysfunction of this structure results in abnormal behavior. Greater understanding of this circuitry would be of immense value in designing improved therapies for Parkinson's Disease, dystonias, Tourette Syndrome and other serious brain disorders.

National Institute of Health (NIH)
National Institute of Neurological Disorders and Stroke (NINDS)
Research Project (R01)
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Sensorimotor Integration Study Section (SMI)
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Sieber, Beth-Anne
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University of Michigan Ann Arbor
Schools of Arts and Sciences
Ann Arbor
United States
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Schmidt, Robert; Berke, Joshua D (2017) A Pause-then-Cancel model of stopping: evidence from basal ganglia neurophysiology. Philos Trans R Soc Lond B Biol Sci 372:
Howe, William M; Gritton, Howard J; Lusk, Nicholas A et al. (2017) Acetylcholine Release in Prefrontal Cortex Promotes Gamma Oscillations and Theta-Gamma Coupling during Cue Detection. J Neurosci 37:3215-3230
Mallet, Nicolas; Schmidt, Robert; Leventhal, Daniel et al. (2016) Arkypallidal Cells Send a Stop Signal to Striatum. Neuron 89:308-16
Roseberry, Thomas K; Lee, A Moses; Lalive, Arnaud L et al. (2016) Cell-Type-Specific Control of Brainstem Locomotor Circuits by Basal Ganglia. Cell 164:526-37
Gritton, Howard J; Howe, William M; Mallory, Caitlin S et al. (2016) Cortical cholinergic signaling controls the detection of cues. Proc Natl Acad Sci U S A 113:E1089-97
Angulo-Garcia, David; Berke, Joshua D; Torcini, Alessandro (2016) Cell Assembly Dynamics of Sparsely-Connected Inhibitory Networks: A Simple Model for the Collective Activity of Striatal Projection Neurons. PLoS Comput Biol 12:e1004778
Hamid, Arif A; Pettibone, Jeffrey R; Mabrouk, Omar S et al. (2016) Mesolimbic dopamine signals the value of work. Nat Neurosci 19:117-26
Parker, Philip R L; Lalive, Arnaud L; Kreitzer, Anatol C (2016) Pathway-Specific Remodeling of Thalamostriatal Synapses in Parkinsonian Mice. Neuron 89:734-40
Kharkwal, Geetika; Brami-Cherrier, Karen; Lizardi-Ortiz, José E et al. (2016) Parkinsonism Driven by Antipsychotics Originates from Dopaminergic Control of Striatal Cholinergic Interneurons. Neuron 91:67-78
Nelson, Alexandra B; Bussert, Timothy G; Kreitzer, Anatol C et al. (2014) Striatal cholinergic neurotransmission requires VGLUT3. J Neurosci 34:8772-7

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