An Interactive Program For The Analysis Of Eng Tracings

Anzaldi, E.; Mira, E

doi:10.3109/00016487509121310

Cited by 23 publications

(3 citation statements)

References 10 publications

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“…in articles 4,9,10,12,17,22,35,48 which are principally based on the differentiation of a positional eye movement signal to its angular velocity signal, from which actual eye movements are detected by using appropriate threshold values to indicate the beginnings and ends of such eye movements as saccades, nystagmus, smooth pursuit or tracking eye movements. These are then compared to the corresponding angular stimulus signal, which is typically generated as a visual stimulation, for example a computer-controlled laser light dot emitted on the wall, which the subject is required to follow with the gaze.…”

Section: Introductionmentioning

confidence: 99%

A Signal Analysis Technique of Vestibulo-Ocular Reflex Stimulated with Impulsive Head Movements

2006

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Eye movements have been investigated in several areas of medicine and also elsewhere, such as in psychology or even in the development of human-computer interfaces. In the last few years we have designed a technique to stimulate, measure and analyze vestibulo-ocular reflex eye movements. In the otoneurological literature these are seen as a novel and promising means of revealing certain disorders and diseases associated with vertigo. Vestibulo-ocular reflex is stimulated by impulsive head movements. We developed the present pattern recognition technique to detect the stimulus (impulsive head movements) and the vestibulo-ocular reflex (response eye movements) generated from signals and to compute the latency and the gain values between them. Using our technique to calculate these attributes, we obtained clearly different results for a group of 22 dizzy patients than for a group of 30 healthy subjects.

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Section: Introductionmentioning

confidence: 99%

A Signal Analysis Technique of Vestibulo-Ocular Reflex Stimulated with Impulsive Head Movements

2006

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“…Vestibular nystagmus was induced by postrotational stimulation at 1207s in CW and CCW direction. EOG tracings were recorded both on paper and on magnetic tape and subsequently processed using an interactive computer program [Anzaldi and Mira, 1975] in order to obtain the slow cumulative eye position (SCEP) diagrams. EOG was calibrated immediately before and after each test, the patient was tested for periods of no longer than 2 min at a time, took no medication in the week before testing and performed mental arithmetics during postrotational tests.…”

Section: Methodsmentioning

confidence: 99%

Oculomotor Abnormalities after Labyrinthine and Cerebellar Lesion

Cherubino¹,

Mira²,

Mevio³

1982

ORL

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A subject presenting a rare association of left labyrinthine and left hemispheric cerebellar lesion was examined, with recording and analysis of eye movements at different intervals. A complete compensation of the vestibular deficit and recovery of cerebellar postural ataxia, with persistence of limb incoordination and oculomotor abnormalities, were observed. The saccadic, smooth pursuit and optokinetic nystagmus systems were impaired. Ocular signs, in combination, may suggest a cerebellar dysfunction but they do not supply sufficient diagnostic criteria for localizing the cerebellar damage. Only the direction-specific impairment of smooth pursuit and optokinetic nystagmus is indicative of the side of the lesion.

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“…On the contrary, central vestibular pathologies are often character ized by rhythm deviations and nystagmus irregularities such as pauses, arythmias, dysmetrias, intermittent fast phases, crochetages, and other types of group formations (Jongkees, 1973). In spite of the clinical interest of these changes in nystagmus morphology, their quantification has not been generally included in the programs for computer analysis of vestibular nystagmus {Herberts et al., 1968\Matz et al, 1970Honmbia et al, 1971;Tole and Young, 1971;Oman et al, 1973;Anzaldi and Mira, 1975). An attempt in this sense has been made by Cheng and Outerbridge (1974) by computing the histograms of the intersaccadic intervals, and by Henriksson et al (1976) by computing some statistical parameters related to the time distribution of the velocity and dura tion of nystagmic slow and fast phases.…”

Section: Introductionmentioning

confidence: 99%

Quantification of Vestibular Nystagmus by an Interactive Computer Program

Buizza

Schmid

Zanibelli

et al. 1978

ORL

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An interactive program for the analysis of nystagmus is presented, and some results obtained by processing postrotational responses are reported. The program is provided with a special subroutine which gives a quantification of the rhythm and regularity of the response through the histograms of the ratios between the duration of successive intersaccadic intervals and between the amplitudes of successive fast components. The consideration of these histograms has been proved to be highly significant in discriminating between normal and pathological responses.

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An Interactive Program For The Analysis Of Eng Tracings

Cited by 23 publications

References 10 publications

A Signal Analysis Technique of Vestibulo-Ocular Reflex Stimulated with Impulsive Head Movements

A Signal Analysis Technique of Vestibulo-Ocular Reflex Stimulated with Impulsive Head Movements

Oculomotor Abnormalities after Labyrinthine and Cerebellar Lesion

Quantification of Vestibular Nystagmus by an Interactive Computer Program

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