They are composed of the
ansa lenticularis, the
lenticular fasciculus (
field H2 of Forel), and the
thalamic fasciculus (
field H1 of Forel). • The
ansa lenticularis is composed of fibers that pass from the ventral aspect of the
globus pallidus and sweep around the posterior limb of the
internal capsule. They connect with the fibers of the lenticular fasciculus in the
field H of Forel to form the
thalamic fasciculus. •
The lenticular fasciculus is composed of fibers that pass from the internal part of the
globus pallidus,
through the posterior limb of the
internal capsule, around the
zona incerta. These fibers connect with the fibers of the ansa lenticularis in the field H of Forel to form the thalamic fasciculus. • The
thalamic fasciculus is formed by the fibers of the ansa lenticularis and the lenticular fasciculus that merge in the field H of Forel. The fibers of this fasciculus then travel to the thalamus and primarily terminate in the
ventral anterior nucleus and
ventral lateral nucleus. Some fibers travel to the interthalamic nuclei. ==See also==