title: Locomotor projections from the pedunculopontine nucleus to the spinal cord.
abstract: Following injections of retrograde tracers into the spinal cord enlargements, the mesencephalic locomotor region (MLR) was electrically stimulated to induce locomotion in decerebrate rats. MLR sites coincided with cholinergic pedunculopontine nucleus (PPN) neurons, which were selectively labelled using NADPH diaphorase histochemistry. Retrogradely labelled (spinal-projecting) PPN neurons were scattered among cholinergic PPN neurons. The absence of retrogradely labelled, NADPH diaphorase positive PPN neurons indicates that spinal enlargement projections are non-cholinergic.
authors: Department of Anatomy, University of Arkansas for Medical Sciences, Little Rock.
authors: R D
authors: RD
authors: Skinner
authors: N
authors: N
authors: Kinjo
authors: V
authors: V
authors: Henderson
authors: E
authors: E
authors: Garcia-Rill
mesh_terms: D000818:Animals; D003655:Decerebrate State; D004525:Efferent Pathways / Q000166:cytology; D004558:Electric Stimulation; D005456:Fluorescent Dyes; D006651:Histocytochemistry; D006735:Horseradish Peroxidase; D008124:Locomotion / Q000502:physiology*; D008636:Mesencephalon / Q000166:cytology* / Q000502:physiology; D009252:NADPH Dehydrogenase / Q000378:metabolism; D011149:Pons / Q000166:cytology* / Q000502:physiology; D051381:Rats; D011919:Rats, Inbred Strains; D013116:Spinal Cord / Q000166:cytology* / Q000502:physiology; D013266:Stilbamidines
chemical_list: C049774:2-hydroxy-4,4'-diamidinostilbene, methanesulfonate salt; D005456:Fluorescent Dyes; D013266:Stilbamidines; D006735:Horseradish Peroxidase; D009252:NADPH Dehydrogenase