2024年8月5日 · Some patients who are dizzy use voluntary nystagmus to suppress their sensation of dizziness. This can cause a confusing picture of ocular flutter with an underlying nystagmus. It most commonly is found in persons with bppv.

A systematic investigation of the characteristics of voluntary nystagmus under a number of stimulus conditions showed that it resembles pendular nystagmus in waveform, and certain ocular oscillations, such as ocular flutter and opsoclonus, in frequency.

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]

Voluntary nystagmus has a frequency of 10 to 25 Hz, amplitude up to 6 degrees, and can be maintained for up to 35 s. Oscillopsia is a concomitant feature. It has been reported in more than 100 individuals since 1855 but only once in three siblings, or in two generations.

Voluntary nystagmus is a rapid to-and-fro synchronous movement of the eyes that is initiated and maintained by conscious effort. Voluntary nystagmus has a frequency of 10-25 Hz, with an amplitude of up to 6 degrees, and can be maintained for up to 35 seconds.

Voluntary nystagmus is a pendular, rapid, conjugate, primarily horizontal, benign nystagmus initiated and maintained by voluntary effort. The amplitude is variable, but always low. The rate is constant and rapid.

Voluntary nystagmus is a common eye movement phenomenon that is said to occur in at least 8% of the normal population (1). The eye movements consist of a series of end on end saccades without any intersaccadic interval. It is considered to be under voluntary control.

Nystagmus is a spontaneous or induced oscillatory movement of the eyes that begins with a slow phase movement of the eyes. Patients with congenital forms of nystagmus often do not report oscillopsia. Eye movement recordings can help to clarify the …

Previous studies (Ciuffreda, 1980) have shown that subjects are capable of superimposing voluntary nystagmus on slow eye movements that track a smoothly moving target. We investigated the superposition of voluntary nystagmus on different eye movements for clues about its …

Voluntary nystagmus is a rapid to-and-fro synchronous movement of the eyes that is initiated and maintained by conscious effort. Voluntary nystagmus has a frequency of 10-25 Hz, with an amplitude of up to 6 degrees, and can be maintained for up to 35 seconds.