Square-wave jerks, also called Gegenrucke, are a common finding in healthy persons, particularly the elderly. They have a typical profile on eye movement records, and it is this profile from which their name is derived. They are small, conjugate saccades, ranging from 0.5 to 5.0 degrees in size, that take the eye away from the fixation position and return it after about 200 milliseconds. They are often more prominent during smooth pursuit, are most easily detected during ophthalmoscopy, and are also present in darkness
Saccades are generally thought of as being cortically generated and not seen in comatose patients. S...
Background: Eye movements in essential tremor (ET) are poorly described and may present useful infor...
Congenital or acquired retinal disorders causing blindness, such as Lebers congenital amaurosis, lea...
These are the most common ocular oscillations, since they occur in normals, particularly in the elde...
Macrosquare-wave jerks are large eye movements, typically greater than 5 degrees, that occur at a fr...
PURPOSE. Square-wave jerks (SWJs) during visual fixation and pursuit tracking of targets of varying ...
In an awake individual, the eyes are never absolutely still. Fixation is interrupted by three distin...
: Seen here are SWJ, which is the most common example of a saccadic intrusion. Here the patient is f...
A woman with multiple sclerosis has a postural tremor and macro square wave jerks. These indicate a...
Chiari type II malformation (CII) is a congenital deformity of the cerebellum and brainstem. Square ...
Nystagmus can be classified into pendular and jerk waveforms, where both are generated by a slow, pa...
: Seen here are patients with saccadic intrusions that have preserved intersaccadic intervals. Altho...
This is a 40-year-old man who developed severe headaches, confusion, and gait imbalance which led to...
Saccadic intrusions (SIs), predominantly horizontal saccades that interrupt accurate fixa-tion, incl...
Seen here are patients with saccadic intrusions that do have an intersaccadic interval. Square wave ...
Saccades are generally thought of as being cortically generated and not seen in comatose patients. S...
Background: Eye movements in essential tremor (ET) are poorly described and may present useful infor...
Congenital or acquired retinal disorders causing blindness, such as Lebers congenital amaurosis, lea...
These are the most common ocular oscillations, since they occur in normals, particularly in the elde...
Macrosquare-wave jerks are large eye movements, typically greater than 5 degrees, that occur at a fr...
PURPOSE. Square-wave jerks (SWJs) during visual fixation and pursuit tracking of targets of varying ...
In an awake individual, the eyes are never absolutely still. Fixation is interrupted by three distin...
: Seen here are SWJ, which is the most common example of a saccadic intrusion. Here the patient is f...
A woman with multiple sclerosis has a postural tremor and macro square wave jerks. These indicate a...
Chiari type II malformation (CII) is a congenital deformity of the cerebellum and brainstem. Square ...
Nystagmus can be classified into pendular and jerk waveforms, where both are generated by a slow, pa...
: Seen here are patients with saccadic intrusions that have preserved intersaccadic intervals. Altho...
This is a 40-year-old man who developed severe headaches, confusion, and gait imbalance which led to...
Saccadic intrusions (SIs), predominantly horizontal saccades that interrupt accurate fixa-tion, incl...
Seen here are patients with saccadic intrusions that do have an intersaccadic interval. Square wave ...
Saccades are generally thought of as being cortically generated and not seen in comatose patients. S...
Background: Eye movements in essential tremor (ET) are poorly described and may present useful infor...
Congenital or acquired retinal disorders causing blindness, such as Lebers congenital amaurosis, lea...