reticular formation n.
A massive but vaguely delimited neural apparatus composed of closely intermingled gray and white matter, extending the length of the spinal cord and into the diencephalon, and having a dominant role in the central control of autonomic and endocrine functions, bodily posture, skeletomuscular reflex activity, and general behavioral states. Also called reticular substance.
|reticular formation (rĭ-tĭk'yə-lər) Pronunciation Key
A complex network of neurons and axons that is located throughout the brainstem. The reticular formation regulates consciousness, sleep, and wakefulness.