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(Investigative Ophthalmology and Visual Science. 1971;10:904-910.)
© 1971 by The Association for Research in Vision and Ophthalmology, Inc.

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Electroretinographic Evaluation of the Bunsen-Roscoe Law for the Human Eye at High Energy Levels

ROBERT A. ROSENBLUM 1

1 Crew Systems Department, Naval Air Development Center, Warminster, Pa.; Barnes Hospital, Washington University Medical School, St. Louis, Mo. 63110

The amplitude of the a-wave of the human electroretinogram was shown to obey the intensitytime relation of the Bunsen-Roscoe Law at very suprathreshold energy levels. This implies that retinal receptor cells are capable of temporal light integration at these energies. Failure to demonstrate a photochemically predicted intensity-time reciprocity failure at very high energy levels may represent insufficient flash stimulus energy. The latency of the b-wave response was shown to be dependent on flash duration at constant energy, increasing as duration increases.

Key Words: electroretinography • photopigment photoreversibility • flash duration • critical duration • flashblindness • suprathreshold visual effects • Bunsen-Roscoe law

Submitted on August 12, 1971
Accepted on September 21, 1971






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