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The dorsal column nuclear projections to the nucleus ventralis posterior lateralis thalami and the inferior olive in the cat: An autoradiographic study

1975; Wiley; Volume: 162; Issue: 4 Linguagem: Inglês

10.1002/cne.901620407

1096-9861

Henk J. Groenewegen, A. J. P. Boesten, Jan Voogd,

Ocular Surface and Contact Lens

Abstract This autoradiographic study demonstrates a topical projection of the dorsal column nuclei to the contralateral nucleus ventralis posterior lateralis thalami and the accessory part of the inferior olive. In contrast to earlier anatomical studies the projections of the gracile nucleus and the internal cuneate nucleus proved to be independent and entirely contralateral. Fibers from the gracile nucleus terminate only in the lateral part of the nucleus ventralis posterior lateralis (VPL 1 ) and from the internal cuneate nucleus only in the medial part of this nucleus (VPL m ). Projections of the gracile nucleus to the contralateral inferior olive are restricted to the caudal one‐third of the medial accessory olive and the ventrolateral part of the dorsal accessory olive. The internal cuneate nucleus is only connected with the dorsomedial part of the rostral two‐thirds of the dorsal accessory olive. Our material does not allow conclusions about projections from the dorsal column nuclei to other thalamic nuclei and about rostrocaudal point to point relationships between the dorsal column nuclei and the thalamus or the inferior olive.