LEDs: convenient, inexpensive sources for visual experimentation.
This article presents the electrical and optical properties of LEDs for use as visual stimulators in neurophysiological and psychophysical research. one particular circuit is considered in detail which should enable an investigator with minimal technical expertise to build a high quality and versatile stimulator within a few hours and at a minimal cost. Improved circuits and anticipated developments in LED technology are discussed.
D003365:Costs and Cost Analysis; D004581:Electronics; D009482:Neurophysiology / Q000295:instrumentation; D010775:Photic Stimulation / Q000295:instrumentation*; D011601:Psychophysics