Tz. Aziz et al., THE ROLE OF DESCENDING BASAL GANGLIA CONNECTIONS TO THE BRAIN-STEM INPARKINSONIAN AKINESIA, British journal of neurosurgery, 12(3), 1998, pp. 245-249
Akinesia is the most disabling symptom of Parkinson's disease. The neu
ral mechanisms underlying it probably involve the descending projectio
ns of the basal ganglia to the brain stem as it improves after a palli
dotomy or subthalamic nucleotomy but not after a thalamotomy. We descr
ibe the effects of lesioning the pedunculopontine nucleus in the norma
l primate in generating an akinetic syndrome. The possible clinical im
plications of this study are discussed.