title: Direct and indirect cortico-motoneuronal pathways and control of hand/arm movements.
abstract: Recent studies from our group have demonstrated the existence of a disynaptic excitatory cortico-motoneuronal (CM) pathway in macaque monkeys via propriospinal neurons in the midcervical segments. Results from behavioral studies with lesion of the direct pathway suggest that the indirect CM pathway can mediate the command for dexterous finger movements.
authors.affiliation: Department of Developmental Physiology, National Institute for Physiological Sciences, Okazaki, Japan. tisa@nips.ac.jp
authors.forename: Tadashi
authors.initials: T
authors.lastname: Isa
authors.forename: Yukari
authors.initials: Y
authors.lastname: Ohki
authors.forename: Bror
authors.initials: B
authors.lastname: Alstermark
authors.forename: Lars-Gunnar
authors.initials: LG
authors.lastname: Pettersson
authors.forename: Shigeto
authors.initials: S
authors.lastname: Sasaki
mesh_terms: D000818:Animals; D001132:Arm / Q000294:innervation / Q000502:physiology*; D002415:Cats; D004594:Electrophysiology; D006225:Hand / Q000294:innervation / Q000502:physiology*; D006801:Humans; D008251:Macaca; D009044:Motor Cortex / Q000502:physiology*; D009046:Motor Neurons / Q000502:physiology*; D009068:Movement / Q000502:physiology*; D011712:Pyramidal Tracts / Q000502:physiology; D051381:Rats