Interference of 50 Hz electrical cortical potentials evoked by TV systems.
Open Access
- 1 November 1979
- journal article
- research article
- Published by BMJ in British Journal of Ophthalmology
- Vol. 63 (11) , 779-781
- https://doi.org/10.1136/bjo.63.11.779
Abstract
Application of TV systems for generating patterned stimuli for the examination of the electrical cortical potentials has disadvantages caused by the frame frequency of 50 Hz of TV sets. Apart from a larger variability in latency times of the electrical potentials as compared to the results obtained by projector systems, a 50-Hz noise on the recordings mediated through the visual system may be seen. These disadvantages can be ameliorated by increasing the frame frequency of the TV set.Keywords
This publication has 2 references indexed in Scilit:
- Variation in latency times of visually evoked cortical potentials.British Journal of Ophthalmology, 1978
- Sine waves and flicker fusionDocumenta Ophthalmologica, 1964