Results 211 to 220 of about 17,729 (253)
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Diurnal Modulation of Pupillary Light Reflex
Light & Engineering, 2023Pupillary light reflex is mediated by intrinsic photosensitive retinal ganglion cells (ipRGCs) and the midbrain in human brain. The cells ipRGCs are highly sensitive to blue light (~ 480 nm). In this study, we evaluated diurnal changes in chromatic sensitivity of ipRGCs by measuring pupillary light reflex.
Ryuma Senba, Yu Maruyama, Motoharu Takao
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Lateralization of Pupillary Light Reflex Parameters
Klinische Neurophysiologie, 2004The aim of this study was to determine differing reactions of the left and right eyes with regard to pupillary light reflex (PLR) parameters.All together 90 healthy subjects were included. In the first test series, 34 subjects were investigated on both eyes (left eye was tested first, three tests per day and one reliability test).
Karl-Jürgen, Bär +4 more
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The pupillary light reflex in migraine
Ophthalmic and Physiological Optics, 2005AbstractThe literature suggests that there may be pupil size and response abnormalities in migraine headache sufferers. We used an infra‐red pupillometer to measure dynamic pupil responses to light in 20 migraine sufferers (during non‐headache periods) and 16 non‐migraine age and gender matched controls. There was a significant increase in the absolute
Deacon E, Harle +2 more
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Current Opinion in Ophthalmology, 1995
A wealth of new information has recently come to light concerning the pupillary response to various types of visual input. Much of this information is recent, and has either been published in the last year, is in press, or has just been reported at meetings.
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A wealth of new information has recently come to light concerning the pupillary response to various types of visual input. Much of this information is recent, and has either been published in the last year, is in press, or has just been reported at meetings.
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Saccadic suppression of the pupillary light reflex
Experimental Neurology, 1966Abstract The visual threshold is known to be elevated by as much as one or two log units just before and during both voluntary and involuntary saccadic eye movements (saccadic suppression). Experiments were carried out to discover whether or not the direct pupillary reflex is suppressed in association with saccadic suppression.
B L, Zuber, L, Stark, M, Lorber
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Pupillary light reflex in borderline diabetes mellitus
Diabetes Research and Clinical Practice, 1989It is well known that in diabetes mellitus the early phase insulin release response to glucose becomes blunted. Besides, autonomic neuropathy develops frequently. The autonomic nerve function is related to insulin release in normal subjects. Therefore, in the present study the autonomic function was investigated in different degrees of the early phase ...
N, Kuroda +3 more
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QUANTITATIVE PUPILLARY LIGHT REFLEX
Archives of Neurology And Psychiatry, 1928The instrument here presented is one that measures accurately the intensity of light, designated in candle power, and is intended as an aid in determining quantitatively the pupillary response to light. In is an improvement on a similar instrument, containing only a hand battery, which was exhibited to the Section on Ophthalmology of the College of ...
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The pupillary light reflex pathway
Neuro-Ophthalmology, 1997Since Wernicke1 publicized the matter in the 1880s, it has been considered practically a ‘law of nature’ that the pupillary light reflex pathway is a simple brainstem reflex.
Helmut Wilhelm, Randy H. Kardon
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Adrenergic Mechanisms in the Pupillary Light‐Reflex Path
Acta Physiologica Scandinavica, 1964AbstractOn the basis of the known effects of reserpine on the eye, the presence of monoaminergic mechanisms in the light‐reflex path of the rat was studied with the use of a fluorescence method for the localization of catecholamines and 5‐hydroxytryptamine at the cellular level.
A, DAHLSTROEM +3 more
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Age-dependent pupillary light reflex parameters in children
2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2012Pupillary light reflex (PLR) refers to the phenomenon where pupil size changes in response to stimulation with a flash of light. It is a simple functional test that can reveal dysfunctions associated with the PLR pathway. Although abnormal PLR responses have been reported in many neurological disorders, few studies investigated neurodevelopmental ...
Chathuri, Daluwatte +6 more
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