Sensorimotor cortex projections to the ventrolateral and the dorsomedial medulla oblongata in the rat.
After small pressure injections of Fluorogold (FG), and Dextran-tetramethylrodamine (DR) into the dorsal motor nucleus of the vagus/nucleus of the solitary tract (DMV/NTS) and the rostral ventrolateral medulla (RVLM), respectively, retrograde FG-labelled cells were found mainly in the sensorimotor cortex; retrograde DR-labelled cells were located in the same cortical areas and in the prefrontal cortex. Double-labelled cells were also found in the sensorimotor cortical areas. These results provide evidence of direct projections from the sensorimotor cortex to the DMV/NTS and RVLM and suggest that somatic cortical areas directly control cardiovascular output during sensory and somatic processes.
M'hamed
S B
SB
Département de Biologie, Faculté des Sciences (Semlalia), Université Cadi Ayyad, Marrakech, Morocco.
Sequeira
H
H
Poulain
P
P
Bennis
M
M
Roy
J C
JC
D000818:Animals; D003911:Dextrans; D005456:Fluorescent Dyes; D006651:Histocytochemistry; D008297:Male; D008526:Medulla Oblongata / Q000166:cytology / Q000502:physiology*; D009044:Motor Cortex / Q000166:cytology / Q000502:physiology*; D009434:Neural Pathways / Q000166:cytology / Q000502:physiology; D051381:Rats; D017208:Rats, Wistar; D012235:Rhodamines; D017552:Solitary Nucleus / Q000166:cytology / Q000502:physiology; D013003:Somatosensory Cortex / Q000166:cytology / Q000502:physiology*; D013266:Stilbamidines; D014630:Vagus Nerve / Q000502:physiology
C049774:2-hydroxy-4,4'-diamidinostilbene, methanesulfonate salt; D003911:Dextrans; D005456:Fluorescent Dyes; C067661:Fluoro-Ruby; D012235:Rhodamines; D013266:Stilbamidines