منابع مشابه
Eye movement tics.
An 8-year-old girl presented with opsoclonus-like eye movement and an 18 month history of intermittent facial tics. Investigations were all normal. Electro-oculography showed the eye movements to be of variable amplitude (10-40 degrees), with no intersaccadic interval, and with a frequency of 3-4 Hz. Saccades, smooth pursuit, optokinetic, and vestibular reflexes were all normal. These abnormal ...
متن کاملRapid Eye Movement Sleep
• Rapid eye movement (REM) sleep was first identified by its most obvious feature: rapid eye movements occurring during sleep. In most adult mammals the electroencephalogram (EEG) of the neocortex is low in voltage during REM sleep. The hippocampus exhibits regular high-voltage theta waves throughout REM sleep. • The key brain structure for generating REM sleep is the brainstem, particularly th...
متن کاملEye Movement Control
It is well-known that eye movements are central to visual perception [1]. Visual acuity decreases dramatically in the periphery of vision, and precise eye movements to specific locations are vital to foveate objects of interest and identify them with high accuracy [1–4]. Given the importance of eye movements for visual perception, there has been a surge of interest in the topic, with numerous s...
متن کاملEye-hand coupling before saccadic eye movement
We examined the nature of eye-hand coupling for the fast correction of on-going arm reaching movements in response to an abrupt target jump. We found a significant correlation between the onset times of eye and arm responses. Importantly, the initial component of the reaching correction was affected by a saccade occurrence even though the onset of reaching correction was prior to the saccade on...
متن کاملQuantitative study of spontaneous eye blinks and eye tics in Gilles de la Tourette's syndrome.
Spontaneous eye blink rate and frequency of eye tics were studied in nine Tourette patients during periods of rest, conversation, and video watching. In comparison with controls, the Tourette patients showed a significantly higher blink rate during rest and video watching. Conversation induced a significant increase in blink rate in the control group, but not in the Tourette patients, whereas v...
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ژورنال
عنوان ژورنال: British Journal of Ophthalmology
سال: 1992
ISSN: 0007-1161
DOI: 10.1136/bjo.76.11.697