Preferred Label : reticulotegmental nucleus;
Uberon definition : The tegmental pontine reticular nucleus (or pontine reticular nucleus of the tegmentum)
is an area within the floor of the midbrain. This area is known to affect the cerebellum
with its axonal projections. These efferent connections have been proven to project
not only ipsilaterally, but also to decussate and project to the contralateral side
of the vermis. It has also been shown that the projections from the tegmenti pontis
to the cerebellar lobes are only crossed fibers. The n.r. tegmenti pontis also receives
afferent axons from the cerebellum. This nucleus is known for its large amount of
multipolar cells and its particularly reticular structure. The n.r. tegmenti pontis
is topographically related to pontine nuclei (non-reticular), being just dorsal to
them. The nucleus reticularis has been known to mediate eye movements, otherwise known
as so-called saccadic movement. This makes sense concerning their connections as it
would require a nucleus which receives and projects to the cerebellum to mediate that
kind of complex circuitry. Also, behaviorally this makes sense as no one thinks about
saccadic movements when scanning a room and the saccadic movements are not directly
controlled by the cortex. The nuclei of the cerebellum are the most traditionally
studied mostly because it is easy to see which nuclei degrade when the cerebellum
is amputated. The neurons of the lateral reticular formation are very important for
reflexes and the mediation of posture. It has been shown in cats that electrical stimulation
of the reticular formation can make a standing cat lie down. Conversely if the cat
is stimulated in an alternate spot it can make a lying cat stand.;
Uberon synonym : tegmental reticular nucleus, pontine gray; reticular tegmental nucleus; reticulotegmental nucleus of pons;
Uberon related term : reticulotegmental nucleus of the pons; tegmental reticular nucleus;
Origin ID : 0002147;
Automatic exact mappings (from CISMeF team)
- Uberon cross reference
- part of
The tegmental pontine reticular nucleus (or pontine reticular nucleus of the tegmentum)
is an area within the floor of the midbrain. This area is known to affect the cerebellum
with its axonal projections. These efferent connections have been proven to project
not only ipsilaterally, but also to decussate and project to the contralateral side
of the vermis. It has also been shown that the projections from the tegmenti pontis
to the cerebellar lobes are only crossed fibers. The n.r. tegmenti pontis also receives
afferent axons from the cerebellum. This nucleus is known for its large amount of
multipolar cells and its particularly reticular structure. The n.r. tegmenti pontis
is topographically related to pontine nuclei (non-reticular), being just dorsal to
them. The nucleus reticularis has been known to mediate eye movements, otherwise known
as so-called saccadic movement. This makes sense concerning their connections as it
would require a nucleus which receives and projects to the cerebellum to mediate that
kind of complex circuitry. Also, behaviorally this makes sense as no one thinks about
saccadic movements when scanning a room and the saccadic movements are not directly
controlled by the cortex. The nuclei of the cerebellum are the most traditionally
studied mostly because it is easy to see which nuclei degrade when the cerebellum
is amputated. The neurons of the lateral reticular formation are very important for
reflexes and the mediation of posture. It has been shown in cats that electrical stimulation
of the reticular formation can make a standing cat lie down. Conversely if the cat
is stimulated in an alternate spot it can make a lying cat stand.
