In order to evaluate the effects of smoking on CFF, heavy and light smoker thresholds were determined 5 min. and 1 min. before, and then 1, 5, 10, and 15 min. after 10 inhalations of a cigarette. Although both groups of smokers showed a significant elevation in CFF immediately after smoking, the light smokers' CFF gradually returned to pre-smoking levels, while the heavy smokers' CFF fell below and then rose above the pre-smoking level.
Get full access to this article
View all access options for this article.
References
1.
FabricantN. D.RoseI. W.Effect of smoking cigarettes on the flicker fusion threshold of normal persons. EENT Mon., 1951, 30, 541–543.
2.
JohnstonD. M.A preliminary report of the effect of smoking on size of visual fields. Life Sciences, 1965, 4, 2215–2221.
3.
JohnsonD. M.Effect of smoking on visual search performance. Percept. mot. Skills, 1966, 22, 619–622.
4.
LarsonP. S.FinneganJ. K.HaagH. B.Observations on the effect of cigarette smoking on the fusion frequency of flicker. J. clin. Invest., 1950, 29, 483–485.
5.
PowellE.Smoking and its effect upon visual accommodation. Res. Quart., 1938, 9, 30–36.
6.
SchrumpfP. P.Tobacco and physical efficiency. New York: Paul B. Hobbes, 1927.
7.
SheardC.The effects of smoking on the dark adaptation of rods and cones. Fed. Proc., 1946, 5, 94.
8.
WarwickK. M.EysenckH. J.The effects of smoking on the CFF threshold. Life Sciences, 1963, 4, 219–225.
9.
WilderJ.Basimetric approach (Law of Initial Value) to biological rhythms. Ann. N. Y. Acad. Sci., 1962, 98, 1211–1220.
