NEUR 2000 final exam with 100% Correct answers

Which nuclei comprise the striatum? a. Globus pallidus and caudate b. Putamen and pallidum c. Caudate and substantia nigra pars compacta d. Putamen and caudate e. Pallidum and substantia nigra pars compacta d. Putamen and caudate Where are medium spiny neurons located? Striatum Output from the basal ganglia projects from which structures? Globus pallidus and substantia nigra pars reticulata Which regions of the cerebral cortex project directly to the striatum? Nearly all regions of the cerebral cortex What evidence suggests that medium spiny neurons are associated with a decision to move? Neurons in the putamen and caudate discharge seconds before the initiation of movement. Which neurons do not directly synapse on the striatum? α motor neurons Dopaminergic neurons that synapse on medium spiny neurons originate from which brain region? Substantia nigra pars compacta The transmitter for the medium spiny neurons of the striatum is GABA There is a high degree of convergence from the medium spiny neurons to the neurons of the and . globus pallidus; substantia nigra pars reticulata Efferent neurons from the globus pallidus that influence the activity of the motor areas of the cortex arise from the segment and relay in the before reaching the cortex. internal; VA/VL thalamic nuclei Excitation of the motor cortex is associated with excitation in which other brain region? striatum A researcher injects a GABA antagonist into the globus pallidus and then stimulates the striatum. What are the expected changes in the downstream response? Decreased activation of the globus pallidus and decreased excitation of the motor cortex Substania nigra pars reticulata axons project to ; the globus pallidus axons do not project to this region. superior colliculus.