A novel method to reduce noise in electroretinography using skin electrodes: a study of noise level, inter-session variability, and reproducibility.

To determine the feasibility of recording reproducible electroretinograms (ERGs) with skin electrodes using a new ERG system. Seventeen healthy volunteers were studied. The dark-adapted, bright-flash ERGs were recorded with a new ERG recording system (LE-4000, Tomey, Nagoya, Japan) in which the stimulus alternated between the eyes every 15 s, and each eye was stimulated eight times.

Pattern visual evoked potentials elicited by organic electroluminescence screen.

Purpose: To determine whether organic electroluminescence (OLED) screens can be used as visual stimulators to elicit pattern-reversal visual evoked potentials (p-VEPs).

Method: Checkerboard patterns were generated on a conventional cathode-ray tube (S710, Compaq Computer Co., USA) screen and on an OLED (17 inches, 320 × 230 mm, PVM-1741, Sony, Tokyo, Japan) screen.

Comparisons of pattern visually evoked potentials elicited by different response time liquid crystal display screens.

Purpose: To evaluate the usefulness of a liquid crystal display (LCD) with higher driving frequency and shorter response time (2 ms) as a visual stimulator to elicit pattern reversal visually evoked potentials (p-VEPs).

Method: p-VEPs were recorded from 12 eyes of 12 healthy volunteers (28.3 ± 9 years).

Liquid crystal display screens as stimulators for visually evoked potentials: flash effect due to delay in luminance changes.

Purpose: The cathode-ray tube (CRT) screen has recently been replaced by liquid crystal display (LCD) screens as visual stimulators for pattern-reversal visually evoked potentials (p-VEPs). The aim of the study was to evaluate the usefulness of LCD screen to elicit p-VEPs.

Methods: The waveforms of the p-VEPs elicited by a LCD panel were compared with those elicited by a conventional CRT screen.