%0 Journal Article 
%A Santiago Rodrigo, Luis de
%A Fernández Rodríguez, Alfredo José
%A Blanco, R.
%A Pérez Rico, María Consuelo
%A Rodríguez Ascariz, José Manuel
%A Barea Navarro, Rafael
%A Miguel Jiménez, Juan Manuel
%A Amo, C.
%A Sánchez Morla, Eva María
%A Boquete Vázquez, Luciano
%T Improved measurement of intersession latency in mfVEPs
%D 2014
%@ 0012-4486
%U http://hdl.handle.net/10017/49178
%X Purpose: The purpose of the study is to present a method (Selfcorr) by which to measure intersession latency differences between multifocal VEP (mfVEP) signals.

Methods: The authors compared the intersession latency difference obtained using a correlation method (Selfcorr) against that obtained using a Template method. While the Template method cross-correlates the subject’s signals with a reference database, the Selfcorr method cross-correlates traces across subsequent recordings taken from the same subject.

Results: The variation in latency between intersession signals was 0.8 ± 13.6 and 0.5 ± 5.0 ms for the Template and Selfcorr methods, respectively, with a coefficient of variability C V_TEMPLATE = 15.83 and C V_SELFCORR = 5.68 (n = 18, p = 0.0002, Wilcoxon). The number of analyzable sectors with the Template and Selfcorr methods was 36.7 ± 8.5 and 45.3 ± 8.7, respectively (p = 0.0001, paired t test, two tailed).

Conclusions: The Selfcorr method produces smaller intersession mfVEP delays and variability over time than the Template method.
%K Multifocal visual-evoked
potential
%K Relative latencies
%K Cross-correlation
%K Visual pathway
%K Electrónica
%K Electronics
%~ Biblioteca Universidad de Alcala