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COVARIATION OF THE SIMULTANEOUSLY RECORDED c‐WAVE AND STANDING POTENTIAL OF THE HUMAN EYE
Author(s) -
NILSSON SVEN ERIK G.,
SKOOG KLASOLAV
Publication year - 1975
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.1975.tb01187.x
Subject(s) - stimulus (psychology) , amplitude , human eye , optics , contact lens , physics , psychology , psychotherapist
The c ‐wave and the directly recorded standing potential (SP) of the human eye were studied with the aid of a recently developed method including matched temperature stabilized calomel electrodes, d.c. amplifiers and a suction contact lens. This technique, which does not require general anaesthesia, permits simultaneous direct d.c. recordings of the SP and the c ‐wave in human volunteers during long‐term experiments. Upon repetitive light flashes (stimulus duration 1 sec, interval 20 sec and flash intensity 4.5 rel. log units above b ‐wave threshold) both variables responded with slow amplitude oscillations with a frequency of about 2/hour. The oscillations were similar as to phases and frequencies. Both the potentials are held to be generated mainly in the pigment epithelium. Considering this partly common origin the observed covariation was an interesting finding.