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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
Brockhurst RJ. EFFECTS OF ILLUMINATION AND SLEEP ON ELECTRO-OCULOGRAM. AMA Arch Ophthalmol. 1955;53(6):915. doi:10.1001/archopht.1955.00930010923021
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