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R. J. Brockhurst, M.D.
62 Basset St. Lynn, Mass.

AMA Arch Ophthalmol. 1955;53(6):915.

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To the Editor:

—In his paper entitled "Effects of Illumination and Sleep upon Amplitude of Electro-Oculogram," published in the April, 1955, issue of the ARCHIVES, page 542, Aserinsky refers to a paper entitled "Study of Ocular Movements Under Stress," by K. Lion and R. Brockhurst, which appeared in the ARCHIVES (46:315-318, 1951). He states that a plausible explanation for the observed reduction of electro-oculogram (EOG) amplitudes after stress might be that the D. C. potential of the eye was changed by, or during, the experimental procedure, rather than by a decreased excursion of the eyeball, as Lion and Brockhurst suggested. This new explanation is based upon the author's observation that after 5 to 15 minutes of dark adaptation the amplitudes decreased, whereas after light adaptation for 3 to 4 minutes the amplitudes increased. The possibility of a metabolic change affecting the amplitudes of the EOG is suggested.

In the . . . [Full Text PDF of this Article]

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