منابع مشابه
Dark Adaptation in Agriolimax
A method is described which measures the excitation of Agriolimax by light, during the progress of light adaptation, by assuming that the orientating effect of continuous excitation is expressed as a directly proportionate tension difference in the orienting muscles of the two sides of the body. The tendency toward establishment of such a tension difference is caused to work against a similar g...
متن کاملDark Adaptation in Dineutes
The level of dark adaptation of the whirligig beetle can be measured in terms of the threshold intensity calling forth a response. The course of dark adaptation was determined at levels of light adaptation of 6.5, 91.6, and 6100 foot-candles. All data can be fitted by the same curve. This indicates that dark adaptation follows parts of the same course irrespective of the level of light adaptati...
متن کاملGeotropism of Agriolimax
On an inclined glass plate the slug Agriolimax orients and creeps upward or downward. The angle of orientation on the plane (theta) is proportional to the logarithm of the component of gravity in the creeping plane. The coefficient of variability of the measured values of (theta) decreases linearly as the logarithm at the gravity component in the creeping plane increases. The cosine of the angl...
متن کاملDark adaptation in retinal abnormalities.
A common complaint is that of abnormally reduced vision in dark conditions. Whether this refers to visual acuity, glare, or other aspects of visual function must be determined in order to understand the cause of the complaint and if any alleviation of these symptoms can be considered. One aspect to investigate is whether the complaint refers to a delay in adjusting to a dark environment. This m...
متن کاملDark adaptation in diabetes mellitus.
The effect of diabetes mellitus on the normal dark adaptation curve is investigated. It has been found that diabetic patients take longer to adapt and that their absolute thresholds are raised. The degree of elevation in the final threshold correlates with the duration of diabetes.
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ژورنال
عنوان ژورنال: Journal of General Physiology
سال: 1928
ISSN: 1540-7748,0022-1295
DOI: 10.1085/jgp.12.1.83