Pars reticulata
The neurons of the pars reticulata through the nigrothalamic bundle send axons to a particular part of the motor thalamus.The nigral territory corresponds to the nucleus ventralis anterior (VA) (see also List of thalamic nuclei) (different from the pallidal VO).The particularity of the pars lateralis is to send its axons to the superior colliculus,[2] which is a too minimized output of the basal ganglia system.The neurons of the pars reticulata are fast-spiking pacemakers, generating action potentials in the absence of synaptic input.Hikosaka and Wurtz[5][6][7][8] devoted four papers to "the visual and oculomotor functions of the monkey substantia nigra pars reticulata".