Search results
Results From The WOW.Com Content Network
Opsoclonus refers to uncontrolled, irregular, and nonrhythmic eye movement. Opsoclonus consists of rapid, involuntary, multivectorial (horizontal and vertical), unpredictable, conjugate fast eye movements without inter-saccadic intervals. [1] It is also referred to as saccadomania or reflexive saccade.
The most important symptoms for diagnosing SS are tremor, extreme aggressiveness, akathisia, or clonus (spontaneous, inducible and ocular). [10] Physical examination of the patient should include assessment of deep tendon reflexes and muscle rigidity, the dryness of the mucosa of the mouth , the size and reactivity of the pupils, the intensity ...
opsoclonus (rapid, involuntary, multivectorial (horizontal and vertical), unpredictable, conjugate fast eye movements without intersaccadic [quick rotation of the eyes] intervals) myoclonus (brief, involuntary twitching of a muscle or a group of muscles) cerebellar ataxia, both truncal and appendicular
Clonus is a set of involuntary and rhythmic muscular contractions and relaxations. Clonus is a sign of certain neurological conditions, particularly associated with upper motor neuron lesions involving descending motor pathways, and in many cases is accompanied by spasticity (another form of hyperexcitability). [ 1 ]
Palatal myoclonus is a rare condition in which there are rhythmic jerky movements or a rapid spasm of the palatal (roof of the mouth) muscles. Chronic clonus is often due to lesions of the central tegmental tract (which connects the red nucleus to the ipsilateral inferior olivary nucleus).
Trace of saccades of the human eye on a face while scanning Saccades during observation of a picture on a computer screen. In vision science, a saccade (/ s ə ˈ k ɑː d / sə-KAHD; French:; French for 'jerk') is a quick, simultaneous movement of both eyes between two or more phases of focal points in the same direction. [1]
Every normal mammalian eye has a scotoma in its field of vision, usually termed its blind spot. This is a location with no photoreceptor cells, where the retinal ganglion cell axons that compose the optic nerve exit the retina. This location is called the optic disc. There is no direct conscious awareness of visual scotomas.
Blepharospasm may occur as secondary to conditions including dry eyes and other specific ocular disease or conditions, Meige's syndrome and other forms of dystonia, and Parkinson's disease and other movement disorders. [3] Blepharospasm occurs in middle age and is more frequent among women than men.