Search results
Results From The WOW.Com Content Network
The midbrain or mesencephalon is the rostral -most portion of the brainstem [ 2] connecting the diencephalon and cerebrum with the pons. [ 3] It consists of the cerebral peduncles, tegmentum, and tectum. It is functionally associated with vision, hearing, motor control, sleep and wakefulness, arousal ( alertness ), and temperature regulation.
The periaqueductal gray is the gray matter located around the cerebral aqueduct within the tegmentum of the midbrain. It projects to the nucleus raphe magnus, and also contains descending autonomic tracts. The ascending pain and temperature fibers of the spinothalamic tract send information to the PAG via the spinomesencephalic tract (so-named ...
Cortical areas: Limbic lobe. Orbitofrontal cortex: a region in the frontal lobe involved in the process of decision-making. Piriform cortex: part of the olfactory system. Entorhinal cortex: related to memory and associative components. Hippocampus and associated structures: play a central role in the consolidation of new memories.
The brainstem (or brain stem) is the stalk-like part of the brain that connects the forebrain (the cerebrum and diencephalon) with the spinal cord. [ 1] In the human brain, the brainstem is composed of the midbrain, the pons, and the medulla oblongata. [ 1][ 2] The midbrain is continuous with the thalamus of the diencephalon through the ...
The brain is the central organ of the human nervous system, and with the spinal cord makes up the central nervous system. The brain consists of the cerebrum, the brainstem and the cerebellum. It controls most of the activities of the body, processing, integrating, and coordinating the information it receives from the sense organs, and making ...
The inferior colliculus ( IC) ( Latin for lower hill) is the principal midbrain nucleus of the auditory pathway and receives input from several peripheral brainstem nuclei in the auditory pathway, as well as inputs from the auditory cortex. [ 1] The inferior colliculus has three subdivisions: the central nucleus, a dorsal cortex by which it is ...
In the brain, the corpora quadrigemina ( Latin for "quadruplet bodies") are the four colliculi—two inferior, two superior —located on the tectum of the dorsal aspect of the midbrain. They are respectively named the inferior and superior colliculus. The corpora quadrigemina are reflex centers involving vision and hearing.
The cerebral aqueduct ( aqueduct of the midbrain, aqueduct of Sylvius, [ 1]: 476 sylvian aqueduct, mesencephalic duct[citation needed]) is a narrow [ 2][ 1]: 469 conduit for cerebrospinal fluid (CSF) connecting the third ventricle and fourth ventricle of the ventricular system of the brain. The cerebral aqueduct is a midline structure.