Related Experiment Video
Updated: Jul 15, 2026
Multifocal Electroretinograms
Published on: December 4, 2011
Automatic positioning of cursors in the transient pattern electroretinogram (PERG) with very poor SNR using an Expert
Anthony Colin Fisher1, Richard P Hagan, Malcolm C Brown
1Department of Clinical Engineering and Clinical Eye Research Centre, Royal Liverpool University Hospital, Liverpool, Merseyside, L7 8XP, UK. a.c.fisher@liv.ac.uk
Abstract:
An expert system is described which automatically cursors PERG waveforms of very poor signal-to-noise ratio. The training data-set is derived from shape-perturbated PERG waveforms based on the ISCEV Standard and a series of clinically-normal waveforms. In validation trials, the Expert System is clearly shown to out-perform the Human Expert in the presence of noise. All software was written in MatLab((R)). It is proposed that this system is generic and similarly applicable to other transient recordings. A comprehensive Internet demonstration (SPoC: Smart Positioning of Cursors) is maintained at www.liverpooleye.org.
