interpeduncular nucleus

(redirected from ganglion isthmi)

in·ter·pe·dun·cu·lar nu·cle·us

[TA]
a median, unpaired, ovoid cell group at the base of the midbrain tegmentum between the cerebral peduncles; it receives the retroflex fasciculus from the habenula and projects to the raphe region (raphe nuclei) and periaqueductal gray substance of the midbrain.

in·ter·pe·dun·cu·lar nu·cle·us

(in'tĕr-pĕ-dungk'yū-lăr nū'klē-ŭs) [TA]
A median, unpaired, ovoid cell group at the base of the midbrain tegmentum between the cerebral peduncles; it receives the retroflex fasciculus from the habenula and projects to the raphe region (raphe nuclei) and periaqueductal gray substance of the midbrain.

interpeduncular nucleus

A ventral nucleus of the midbrain tegmentum lying between the left and right substantia nigrae, which cap the two cerebral peduncles. The interpeduncular nucleus receives axons from the habenula (via the habenulo-interpeduncular tract), and it sends axons dorsally, to the midbrain raphe nuclei.
See: limbic system for illus
See also: nucleus

Gudden,

Bernhard A. von, German neurologist, 1824-1886.
Gudden commissures - the commissural fibers that lie above and behind the optic chiasm. Synonym(s): commissurae supraopticae
Gudden ganglion - a median, unpaired, ovoid cell group at the base of the midbrain tegmentum between the cerebral peduncles. Synonym(s): interpeduncular nucleus
Gudden tegmental nuclei - collective term for two small round cell groups in the caudal part of the midbrain associated with the mamillary body by way of the mamillary peduncle and mamillotegmental tract. Synonym(s): tegmental nuclei