Réticulée formation

The réticulée formation is a nervous structure cerebral Tronc with the autonomous interface of the systems , driving and sensitive. It intervenes in the regulation of great vital functions (like the cycles day before-sleep), the control of motor activities Réflexe S or stereotyped, like the Marche or the postural tonicity and in cognitive functions such as the Attention. From its central role in the regulation of the Vigilance, the lesions of the réticulée formation often involve a Coma.

The réticulée formation is located over the entire length of the cerebral trunk between the great ascending and downward beams. It is appeared as a fabric nervous organized in its main roads in three bands of cellular bodies (median and left para-median and right-hand side) themselves made up in small islands of Neuron S densément connected by white Substance, from where the réticulé term which comes from the Latin reticulum , network . It occupies open spaces left by specific trainings (cerebral stalks, annular protuberance, medulla), but does not have anatomical limits well defined.

The part of the réticulée formation that one calls activatrice the réticulée Formation ascending (FRAA) receives afférences sensitive and driving and at the same time on the cerebral Cortex is projected and the cores of the Thalamus and the Hypothalamus. The réticulée Formation downward activatrice projects efférences towards the Cervelet and the sensory ways .

Phylogenetically, the réticulée formation is one of one of the oldest nervous structures of the cerebral trunk, itself being what one can regard as one of the most primitive centers of the central Nervous system. It is with the interface between the large ones

See too

Core of raphé
Locus cœruleus

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