Impulse Control DisordersImpulsive BehaviorGamblingDopamine AgonistsParkinson DiseaseTrichotillomaniaBenzothiazolesCompulsive BehaviorTropanesAntiparkinson AgentsRewardNeuropsychological TestsReaction TimePrefrontal CortexInhibition (Psychology)Subthalamic NucleusPersonalityMagnetic Resonance ImagingChoice BehaviorFrontal LobeDiagnostic and Statistical Manual of Mental DisordersCocaine-Related DisordersDopaminePsychiatric Status Rating ScalesMental DisordersSubstance-Related DisordersAnalysis of VariancePsychomotor PerformanceImage Processing, Computer-AssistedBrainBrain Mapping