Optimised averaging by on-line statistical verification of response in clinical electrodiagnostic trials

Papakōstopoulos, D.; Gogolitsyn, Y.

doi:10.1016/0167-8760(89)90042-1

Cited by 3 publications

(1 citation statement)

References 2 publications

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“…These facilities enable the operator to monitor the subject's state and data quality. On-line averaging is complemented by on-line statistical verification of response 22 . Single-trial data are always stored for all electrodiagnostic tests performed by the ENAA system and used for more advanced off-line data processing.…”

Section: The Enaasystemmentioning

confidence: 99%

Standardized visual evoked potentials for telematic electrodiagnosis from five laboratories in three European countries

Papakōstopoulos

Hart²,

Papakostopoulos³

et al. 1999

J Telemed Telecare

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The pattern-reversal visual evoked potential (PR VEP) is an electrodiagnostic test which uses an alternating checkerboard pattern as the visual stimulus. To validate the performance of an automated testing system, the equipment was installed in five locations in three countries (the UK, Greece and Cyprus). PR VEPs require accurate control of stimulus size, luminance, contrast, timing, multichannel recordings and various modes of signal processing. Recordings were obtained from 70 subjects, 18-34 years old (seven male and seven female in each laboratory). The data were transmitted by telephone line to the central station in Bristol. Only in Bristol were the operators experienced. There were no significant differences between laboratories in latency or amplitude of the N70 and P100 components. There were no significant differences between eyes. There were significant differences between the sexes but this was related to head size. Decreased square size used in stimulation produced an increased latency in both components. The amplitude of the N70 component increased while that of the P100 decreased with reduced square size. The results confirmed the ability of the automated system to produce standardized PR VEP recordings comparable to those obtainable in advanced laboratories. The system performed well in different locations using inexperienced operators. The system is suitable for multicentre research studies and telemedicine.

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Section: The Enaasystemmentioning

confidence: 99%

Standardized visual evoked potentials for telematic electrodiagnosis from five laboratories in three European countries

Papakōstopoulos

Hart²,

Papakostopoulos³

et al. 1999

J Telemed Telecare

Self Cite

View full text Add to dashboard Cite

show abstract

Some recent applications of clinical psychophysiology

Mangina

1997

International Journal of Psychophysiology

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Comprehensive standardized ophthalmic telemedicine

et al. 1997

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The Electrodiagnostic Neurophysiological Automated Analysis (ENAA) telematic system was developed in the EU EUREKA project. To validate the system 2500 electrodiagnostic tests were administered in a standardized manner during a three-year period. The tests were performed on 70 normal subjects and 500 patients in five laboratories in three European countries. The data were transmitted to the Bristol Telematic Electrodiagnostic Centre in the Bristol Eye Hospital. Data from normal subjects were not significantly different between laboratories. Data from patients were reported upon and the conclusions transmitted to the place of origin. The system provided the remote consultant with multimedia data, including medical images such as colour fundus photography and angiography, video and sound.

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Optimised averaging by on-line statistical verification of response in clinical electrodiagnostic trials

Cited by 3 publications

References 2 publications

Standardized visual evoked potentials for telematic electrodiagnosis from five laboratories in three European countries

Standardized visual evoked potentials for telematic electrodiagnosis from five laboratories in three European countries

Some recent applications of clinical psychophysiology

Comprehensive standardized ophthalmic telemedicine

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