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Nystagmus. Nystagmus is a condition of involuntary (or voluntary, in some cases) [1] eye movement. [2] People can be born with it but more commonly acquire it in infancy or later in life. In many cases it may result in reduced or limited vision. [3] In normal eyesight, while the head rotates about an axis, distant visual images are sustained by ...
Horizontal optokinetic nystagmus. The optokinetic reflex ( OKR ), also referred to as the optokinetic response, or optokinetic nystagmus (OKN), is a compensatory reflex that supports visual image stabilization. [ 1] The purpose of OKR is to prevent image blur on the retina that would otherwise occur when an animal moves its head or navigates ...
Multiple sclerosis can cause a variety of symptoms: changes in sensation ( hypoesthesia ), muscle weakness, abnormal muscle spasms, or difficulty moving; difficulties with coordination and balance; problems in speech ( dysarthria) or swallowing ( dysphagia ), visual problems ( nystagmus, optic neuritis, phosphenes or diplopia ), fatigue and ...
Hormone treatment: There is widespread evidence of prenatal testing and hormone treatment to prevent or eliminate intersex traits, [212] associated also with the problematization of sexual orientation and gender non-conformity.
Myth #1: Your brain stops growing at a certain age. Scientists used to think that the brain stopped developing after adolescence. But we now know that your brain can change and develop at any age ...
Vestibulocerebellar syndrome. Vestibulocerebellar syndrome, also known as vestibulocerebellar ataxia, is a progressive neurological disorder that causes a variety of medical problems. Initially symptoms present as periodic attacks of abnormal eye movements but may intensify to longer-lasting motor incapacity. The disorder has been localized to ...
Using a fork, knife, or spoon at your next meal. Using your computer mouse. Writing. These exercises take something you already know how to do and put them in a new and demanding context. Doing ...
Magnesium deficiency is an electrolyte disturbance in which there is a low level of magnesium in the body. [ 3] Symptoms include tremor, poor coordination, muscle spasms, loss of appetite, personality changes, and nystagmus. [ 1][ 2] Complications may include seizures or cardiac arrest such as from torsade de pointes. [ 1]