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The role of neuron and dopamine loss in Parkinson's Disease (PD) has long been recognized by neuroscientists. However, how dopaminergic modulation affects brain regions involved in the control of voluntary movement remains a subject of investigation. Researchers in the Department of Neurobiology and Behavior in the College of Arts and Sciences and the Renaissance School of Medicine at Stony Brook University, used an experimental model to demonstrate that a loss of midbrain dopaminergic centers impairs the ability of the primary motor cortex neurons to transform inputs into appropriate output. The finding, published in eNeuro, supports a new line of research regarding the origins of changes in the motor cortex and its role during PD. Patients with PD show abnormal activity in the motor cortex, which to date remains difficult to explain. Scientists have proposed that motor cortex dysfunction in PD may come from loss of direct dopaminergic innervation of the cortex, or, alternatively

Mowei vivienne liOlivia swansonMelissa haleyPriscilla yevooArianna maffeiHillary schiffDepartment of neurobiologyCollege of artsRenaissance schoolStony brook universityProfessor arianna maffeiParkinsons diseaseCollege of arts amp sciencesFaculty staffSchool of medicine