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The cerebellar vermis (from Latin vermis, "worm") is located in the medial, cortico-nuclear zone of the cerebellum, which is in the posterior fossa of the cranium. The primary fissure in the vermis curves ventrolaterally to the superior surface of the cerebellum , dividing it into anterior and posterior lobes .
Cerebellar degeneration is a condition in which cerebellar cells, otherwise known as neurons, become damaged and progressively weaken in the cerebellum. [1] There are two types of cerebellar degeneration; paraneoplastic cerebellar degeneration , and alcoholic or nutritional cerebellar degeneration. [ 2 ]
Cerebellar ataxia is a form of ataxia originating in the cerebellum. [1] Non-progressive congenital ataxia (NPCA) is a classical presentation of cerebral ataxias. Cerebellar ataxia can occur as a result of many diseases and may present with symptoms of an inability to coordinate balance, gait, extremity and eye movements. [ 2 ]
Cerebellar atrophy has been observed in many other neurological disorders including Huntington's disease, multiple sclerosis, [61] essential tremor, progressive myoclonus epilepsy, and Niemann–Pick disease. Cerebellar atrophy can also occur as a result of exposure to toxins including heavy metals or pharmaceutical or recreational drugs. [66]
This includes loss of dendritic aborization, or branching, early in disease progression and eventual atrophy of brain tissues in later stages. [21] SCA1 causes moderate degradation of a variety of tissues, including both hemispheres of the cerebellum, the cerebellar vermis, the pons, and the brain stem.
Cerebral atrophy is a common feature of many of the diseases that affect the brain. [1] Atrophy of any tissue means a decrement in the size of the cell, which can be due to progressive loss of cytoplasmic proteins. In brain tissue, atrophy describes a loss of neurons and the connections between them.
Cerebellar cognitive affective syndrome (CCAS), also called Schmahmann's syndrome [1] is a condition that follows from lesions (damage) to the cerebellum of the brain. It refers to a constellation of deficits in the cognitive domains of executive function, spatial cognition, language, and affect resulting from damage to the cerebellum.
Marinesco–Sjögren-like syndrome is a very rare genetic disorder which is characterized by symptoms similar to those shown by people with Marinesco–Sjögren syndrome, the symptoms (of this variant of MSS) being infantile hypotonia, ataxia, cataracts, intellectual disabilities, cerebellar atrophy, myopathic alterations, vascular degeneration ...