RESPIRATORY EFFECTS UPON THE VISUAL THRESHOLD
نویسندگان
چکیده
منابع مشابه
Respiratory Effects upon the Visual Threshold
Measurements are reported of the effects of respiratory stresses upon the absolute threshold of peripheral (rod) vision. Since subjects were kept wholly dark adapted and the photochemical system of the rods therefore stationary, the changes recorded may be assumed to have originated more centrally. To this degree the measurements provide a quantitative index of central nervous imbalance. Breath...
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The visual fields of 16 cats raised with monocular eyelid suture were measured by means of a visual orienting test. We separately measured the fields of nondeprived and deprived eyes. Each cat was tested preoperatively, and 13 of the cats were tested following lesions of the visual cortex, superior colliculus, and/or optic chiasm. Preoperatively with the nondeprived eye, every cat had a normal ...
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1. The variation of threshold with field area was measured in fields homogeneous in rod-cone composition. At 15 degrees above the fovea, an increase in field diameter from 1 degrees to 5 degrees reduces the threshold sevenfold, at 25 degrees above the fovea tenfold. 2. These changes are shown to follow qualitatively from simple statistical properties of the retinal mosaic. Analytic treatment le...
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ژورنال
عنوان ژورنال: Journal of General Physiology
سال: 1942
ISSN: 1540-7748,0022-1295
DOI: 10.1085/jgp.25.6.891