title: The C3-C4 propriospinal system in the cat and monkey: a spinal pre-motoneuronal centre for voluntary motor control.
abstract: This review deals with a spinal interneuronal system, denoted the C3-C4 propriospinal system, which is unique in the sense that it so far represents the only spinal interneuronal system for which it has been possible to demonstrate a command mediating role for voluntary movements. The C3-C4 propriospinal neurones govern target reaching and can update the descending cortical command when a fast correction is required of the movement trajectory and also integrate signals generated from the forelimb to control deceleration and termination of reaching.
authors.affiliation: Department of Integrative Medical Biology, Section of Physiology, Umeå University, Umeå, Sweden. bror.alstermark@physiol.umu.se
authors.forename: B
authors.initials: B
authors.lastname: Alstermark
authors.forename: T
authors.initials: T
authors.lastname: Isa
authors.forename: L-G
authors.initials: LG
authors.lastname: Pettersson
authors.forename: S
authors.initials: S
authors.lastname: Sasaki
mesh_terms: D000818:Animals; D001522:Behavior, Animal / Q000502:physiology; D002415:Cats; D002574:Cervical Vertebrae; D019054:Evoked Potentials, Motor / Q000502:physiology; D005246:Feedback / Q000502:physiology; D005552:Forelimb / Q000502:physiology; D007395:Interneurons / Q000502:physiology*; D008251:Macaca; D023421:Models, Animal; D009046:Motor Neurons / Q000502:physiology*; D009068:Movement / Q000502:physiology*; D009415:Nerve Net / Q000502:physiology; D013127:Spinal Nerves / Q000502:physiology*; D013569:Synapses / Q000502:physiology