part of neuron corpus striatum medium spiny neuron 2010-10-04T08:55:16Z A special type of inhibitory cells representing approximately 90% of the neurons within the corpus striatum of the basal ganglia. They play a key role in initiating and controlling movements of the body, limbs and eyes. BTO:0004778 BrendaTissueOBO MSN medium-sized densely spiny neuron mgr spiny projection neuron