Direct and indirect cortico-motoneuronal pathways and control of hand/arm movements.
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.
Isa
Tadashi
T
Department of Developmental Physiology, National Institute for Physiological Sciences, Okazaki, Japan. tisa@nips.ac.jp
Ohki
Yukari
Y
Alstermark
Bror
B
Pettersson
Lars-Gunnar
LG
Sasaki
Shigeto
S
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