extrapyramidal symptoms

extrapyramidal system dopamine pathways basal ganglia nigrostriatal pathway motor control antipsychotic induced neuroleptic-induced movement disorders first-generation antipsychotics second-generation receptor blockade bradykinesia rigidity resting tremor postural instability muscle spasms torticollis oculogyric crisis laryngospasm neuroleptic malignant syndrome huntington#39aph39#s disease wilson#39aph39#s essential