Paper Info
Title
Measurement of the spatial distribution of human electroretinogram with random dot pattern stimuli
Abstract
The conventional subjective perimetry has several essential problems. The establishment of a practical perimetry for objective evaluation of the visual function of the small area on the retina is desired. This paper proposes a method for measurement and analysis of the spatial distribution of the electroretinogram (ERG) by the random dot pattern (RDP) stimulation. The usefulness of the method as the objective perimetry is examined. In this method, multiple areas of the retina are stimulated simultaneously, which realizes a better SN ratio than the conventional local ERG method executed in the same recording time, and helps to reduce substantially the recording time. To verify the usefulness of the proposed method, RDP is constructed on the liquid crystal display, and ERG is recorded by processing the flash light. Examining the contrast, frequency of stimulation, intensity of stimulus light and background intensity of the pattern, the optimal condition for the measurement is derived. The cross-correlation analysis for the multiinput single-output system is applied to the obtained response, and the responses of various locations on the retina are derived. The spatial distribution of ERG determined from RDP-ERG of the normal eye well corresponds to the known density distribution of the cones. It also is possible to determine the optic disk. Thus, the proposed method is concluded as a useful objective perimetry, which can detect a spatially small initial symptom of the retinal diseases.
Year
DOI
Venue
1994
10.1002/scj.4690250507
SYSTEMS AND COMPUTERS IN JAPAN
Field
DocType
Volume
Electroretinography,Cross-correlation,Computer vision,Computer science,Retina,Artificial intelligence,Meridian (perimetry, visual field),Stimulus (physiology),Perception,Electrophysiology,Erg
Journal
25
Issue
ISSN
Citations 
5
0882-1666
0
PageRank 
References 
Authors
0.34
0
4
Name
Order
Citations
PageRank
Eiichiro Nagasaka100.34
Susumu Hara200.68
Yasunari Yokota333.82
Shiro Usui4775198.35