Frontopontine fibers

The frontopontine fibers or frontopontine tract are corticopontine fibers projecting from the cortex of the frontal lobe to the pons. In the internal capsule, the fibers descend predominately in the anterior limb (but some also in the posterior limb), passing inferior to the thalamus to reach the mesencephalon (midbrain) where they descend in the medial portion of base of the cerebral peduncles. In the pons, the fibers flare out between the pontine nuclei.

Frontopontine fibers
Tractography of frontopontine fibers
Coronal section through mid-brain. Corpora quadrigemina Cerebral aqueduct Central gray stratum Interpeduncular space Sulcus lateralis Substantia nigra Red nucleus of tegmentum Oculomotor nerve, with 8’, its nucleus of origin Lemniscus (in blue) with a’ the medial lemniscus and a" the lateral lemniscus Medial longitudinal fasciculus Raphé Temporopontine fibers Portion of medial lemniscus, which runs to the lentiform nucleus and insula Cerebrospinal fibers Frontopontine fibers
Details
Identifiers
Latin	fibrae frontopontinae
NeuroNames	1326
Anatomical terms of neuroanatomy

Pathways

Some of the frontopontine fibers participate in a pathway contributing to horizontal conjugate gaze:

• Visual cortex → frontal eye fields (of the middle frontal gyrus) → frontopontine fibers → (contralateral) paramedian pontine reticular formation → (ipsilateral) abducens nucleus and (contralateral) oculomotor nucleus

External links

• Diagram at neuropat.dote.hu