Portal de Periódicos da CAPES

Human Electroretinogram Responses to Video Displays, Fluorescent Lighting, and Other High Frequency Sources

1991; Lippincott Williams & Wilkins; Volume: 68; Issue: 8 Linguagem: Inglês

10.1097/00006324-199108000-00012

1538-9235

Samuel M. Berman, Daniel Greenhouse, Ian L. Bailey, Robert Clear, Thomas W. Raasch,

Neural and Behavioral Psychology Studies

Time-averaged human electroretinogram (ERG) responses were determined for several workplace visual stimuli which are temporally modulated at rates exceeding the perceptual critical fusion frequency (CFF). A clearly identifiable synchronous response was in evidence for a video display terminal (VDT) stimulus operating with a refresh rate as high as 76 Hz. A directly viewed fluorescent luminaire with controllable driving frequency elicited a synchronous response at rates as high as 145 Hz. In addition, an intense stimulus created by modulating the light from a slide projector produced responses at least as high as 162 Hz. The implications of these high-frequency responses as representing a potential basis for visual symptoms are discussed.