Results 11 to 20 of about 17,729 (253)

Understanding the effects of mild traumatic brain injury on the pupillary light reflex

open access: yesConcussion, 2017
The pupillary light reflex represents an optimal visual system to investigate and exploit in the mild traumatic brain injury (mTBI) population. Static and dynamic aspects of the pupillary light reflex were investigated objectively and quantitatively in ...
Kenneth J Ciuffreda   +2 more
doaj   +4 more sources

Enhanced pupillary light reflex in infancy is associated with autism diagnosis in toddlerhood

open access: yesNature Communications, 2018
Previous studies showed that children with autism spectrum disorder (ASD) have atypicalities in the pupillary light reflex (PLR). This study uses longitudinal monitoring of infants at risk for ASD to show that PLR magnitude at 10 months of age is ...
Pär Nyström   +7 more
doaj   +2 more sources

The pupillary light reflex in normal subjects. [PDF]

open access: yesBritish Journal of Ophthalmology, 1981
In 19 normal subjects the pupillary reflex to light was studied over a range of stimulus intensities by infrared electronic pupillography and analysed by a computer technique. Increasing stimulus intensity was associated with an increase in direct light reflex amplitude and maximum rate of constriction and redilatation.
openaire   +4 more sources

Relation of pupillary light reflex to light intensity [PDF]

open access: yesAnnals of General Psychiatry, 2006
Tsiptsios Dimitrios   +4 more
doaj   +2 more sources

Pupil tracks statistical regularities: behavioral and neural implications [PDF]

open access: yesJournal of Integrative Neuroscience, 2020
Pupillary light reflex adjusts the amount of light reaching the retina. Recent work suggests that the brainstem pupillary light reflex pathway is controlled by the environment's internal models derived from higher-order temporal statistics.
Shamini Warda, Shubham Pandey
doaj   +1 more source

Gaze-contingent flicker pupil perimetry detects scotomas in patients with cerebral visual impairments or glaucoma [PDF]

open access: yes, 2018
The pupillary light reflex is weaker for stimuli presented inside as compared to outside absolute scotomas. Pupillograph perimetry could thus be an objective measure of impaired visual processing.
Bergsma, Douwe P   +6 more
core   +10 more sources

Fixed Pupillary Light Reflex due to Peripheral Neuropathy after Liver Transplantation [PDF]

open access: yesKorean Journal of Critical Care Medicine, 2015
A 46-year-old female patient was admitted to the intensive care unit (ICU) after liver transplantation. About an hour later after the ICU admission, she had no pupillary light reflex. Both pupils were also fixed at 5 mm.
Kwan Hyung Kim   +4 more
doaj   +1 more source

Searching for Complexity in the Human Pupillary Light Reflex

open access: yesMathematics, 2020
This article aims to examine the dynamical characteristics of the pupillary light reflex and to provide a contribution towards their explanation based on the nonlinear theory of dynamical systems.
Rosário D. Laureano   +3 more
doaj   +1 more source

An Innovative Technique to Evaluate Quantitative Pupillary Light Reflex by Dynamic Pupillometry using Infrared Videography [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2019
Introduction: An innovative approach was designed to quantify the pupillary light reflex using infrared and white light illumination. This method is convenient to detect pupil edges, area and the diameter of pupil contour recorded in different ambient ...
AV Siva kumar   +4 more
doaj   +1 more source

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