Software for analysing multifocal visual evoked potential signal latency progression.
BACKGROUND
This paper describes a new non-commercial software application (mfVEP(2)) developed to process multifocal visual-evoked-potential (mfVEP) signals in latency (monocular and interocular) progression studies.


METHODS
The software performs analysis by cross-correlating signals from the same patients. The criteria applied by the software include best channels, signal window, cross-correlation limits and signal-to-noise ratio (SNR). Software features include signal display comparing different tests and groups of sectors (quadrants, rings and hemispheres).


RESULTS
The software's performance and capabilities are demonstrated on the results obtained from a patient with acute optic neuritis who underwent 9 follow-up mfVEP tests. Numerical values and graphics are presented and discussed for this case.


CONCLUSIONS
The authors present a software application used to study progression in mfVEP signals. It is also useful in research projects designed to improve mfVEP techniques. This software makes it easier for users to manage the signals and allows them to choose various ways of selecting signals and representing results.
Department of Electronics, University of Alcalá, Plaza de S. Diego, s/n, 28801 Alcalá de Henares, Spain.
L
L
de Santiago
Department of Ophthalmology Sydney EYE Hospital, 8 Macquarie St, Sydney, NSW 2000, Australia.
A
A
Klistorner
Department of Electronics, University of Alcalá, Plaza de S. Diego, s/n, 28801 Alcalá de Henares, Spain.
M
M
Ortiz
Department of Electronics, University of Alcalá, Plaza de S. Diego, s/n, 28801 Alcalá de Henares, Spain.
A J
AJ
Fernández-Rodríguez
Department of Electronics, University of Alcalá, Plaza de S. Diego, s/n, 28801 Alcalá de Henares, Spain.
J M
JM
Rodríguez Ascariz
Department of Electronics, University of Alcalá, Plaza de S. Diego, s/n, 28801 Alcalá de Henares, Spain.
R
R
Barea
Department of Electronics, University of Alcalá, Plaza de S. Diego, s/n, 28801 Alcalá de Henares, Spain.
J M
JM
Miguel-Jiménez
Department of Electronics, University of Alcalá, Plaza de S. Diego, s/n, 28801 Alcalá de Henares, Spain. Electronic address: luciano.boquete@uah.es.
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L
Boquete
D018450:Disease Progression; D005074:Evoked Potentials, Visual / Q000502:physiology*; D006801:Humans; D009902:Optic Neuritis / Q000503:physiopathology*; D012815:Signal Processing, Computer-Assisted; D012984:Software; D014584:User-Computer Interface
Cross-correlation; Hemispheres; Latency analysis; Progression studies; Quadrants; Rings; mfVEP