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Descending projections of Forel's field H neurones to the brain stem and the upper cervical spinal cord in the cat by Tadashi Isa; Shigeto Sasaki is a Neuroscience article available to read on EtoBox.

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1. Descending projections from Forel's field H (FFH) to the brain stem and upper cervical spinal cord were studied in cats. 2. Following implantation of HRP pellets into the spinal gray matter (C1-C3) or in the ponto-medullary reticular formation, the nucleus reticularis pontis caudalis (NRPC) or in the nucleus reticularis gigantocellularis (NRG), numerous neurones were retrogradely labelled in FFH on the ipsilateral side. In the former cases, the sizes of labelled neurones were medium-large (20-40 microns in diameter) while both small and medium-large neurones were labelled in the latter cases. 3. The lowest levels of spinal projection of single FFH neurones (n = 70) were assessed by antidromic spikes elicited by stimulating electrodes placed in C1, C3 and C7. The majority (59%) projected to C1 (but not to C3), about 27% to C3 (but not to C7), and only 14% to C7. 4. Axonal trajectories of single FFH neurones in C1-C3 segments were investigated by antidromic threshold mapping methods. The stem axons of spinal-projecting FFH neurones descended in the ventral or in the ventrolateral funiculi and the collaterals were projected to neck motor nuclei (lamina IX, Rexed 1954) and laminae V

Who reads Descending projections of Forel's field H neurones to the brain stem and the upper cervical spinal cord in the cat?

Author

Tadashi Isa; Shigeto Sasaki

Publisher

Springer-Verlag; Springer Verlag; Springer Science and Business Media LLC; Society for Mining, Metallurgy and Exploration Inc. (ISSN 0014-4819)

Published

1992

Language

EN

Field

Neuroscience (Life Sciences)