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The middle cerebellar peduncle is the largest of the three cerebellar peduncles. It connects the pons and cerebellum.It consists almost entirely of fibers passing from the pons to the cerebellum (fibrocerebellar fibers); the fibers arise from the pontine nuclei and decussate within the pons before entering the peduncle [1] to end in the contralateral cerebellar hemisphere.
Cerebellar stroke syndrome is a condition in which the circulation to the cerebellum is impaired due to a lesion of the superior cerebellar artery, anterior inferior cerebellar artery or the posterior inferior cerebellar artery.
This tension is forced and can cause lesions of the upper roots and trunk of the nerves of the brachial plexus. [25] Motorcycle accidents and sports injuries usually cause this type of injury to brachial plexus. [14] Upward traction also results in the broadening of the scapulo-humoral angle but this time the nerves of T1 and C8 are torn away.
A common cause of horizontal gaze palsies are strokes involving pontine structures, abducens nerve, or the motor cortex. [5] Horizontal gaze palsy has also been reported in cases of metastasis , [ 6 ] hemorrhage , [ 7 ] neuromyelitis optica spectrum disorder , [ 8 ] and multiple sclerosis .
Anywhere from 15 to 60 percent of adults reported having chronic pituitary dysfunction post-traumatic brain injury, per a 2023 article in Current Neurology and Neuroscience Reports. So, if you do ...
Due to the small size of the arteries in the area, the most common cause of a local lesion is an infarction due to lipohyalinosis and hypertension. Like other small arteries of the brain, these vessels are vulnerable to microemboli , especially those generated due to turbulence or low-flow states in those with artificial heart valves or ...
Pontocerebellar fibers are the sole efferent pathway of the pontine nuclei. The fibers mostly decussate within the pons to pass through the (contralateral) middle cerebellar peduncle to terminate in the contralateral cerebellum as mossy fibers; they form terminal synapses in the cerebellar cortex, but also issue collaterals to the cerebellar nuclei.
The human cerebellum is located at the base of the brain, with the large mass of the cerebrum above it, and the portion of the brainstem called the pons in front of it. It is separated from the overlying cerebrum by a layer of tough dura mater called the cerebellar tentorium; all of its connections with other parts of the brain travel through the pons.