Results 171 to 180 of about 6,712 (201)
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Portable Infrared Pupillometry
Anesthesia & Analgesia, 2015Portable infrared pupillometers provide an objective measure of pupil size and pupillary reflexes, which for most clinicians was previously only a visual impression. But despite the fact that pupillometry can uncover aspects of how the human pupil reacts to drugs and noxious stimulation, the use of pupillometry has not gained widespread use among ...
Merlin D, Larson, Matthias, Behrends
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Perspectives on Psychological Science, 2012
The measurement of pupil diameter in psychology (in short, “pupillometry”) has just celebrated 50 years. The method established itself after the appearance of three seminal studies ( Hess & Polt, 1960 , 1964 ; Kahneman & Beatty, 1966 ). Since then, the method has continued to play a significant role within the field, and pupillary responses ...
Bruno, Laeng +2 more
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The measurement of pupil diameter in psychology (in short, “pupillometry”) has just celebrated 50 years. The method established itself after the appearance of three seminal studies ( Hess & Polt, 1960 , 1964 ; Kahneman & Beatty, 1966 ). Since then, the method has continued to play a significant role within the field, and pupillary responses ...
Bruno, Laeng +2 more
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Automated pupillometry in intensive care
Intensive Care Medicine, 2022Background. In critically ill patients, pupillary light reflex (PLR) is commonly used to explore brainstem dysfunction. Standard PLR assessment using a penlight is simple and inexpensive, but qualitative and prone to subjectivity. Automated pupillometry (AP) standardises the intensity, the distance from the eye, and duration of the light stimulus and ...
Sandroni C., Citerio G., Taccone F. S.
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Artifact Management in Pupillometry
Nursing Research, 1994A detailed analysis of pupillometry data collection and handling procedures in the initial study uncovered a number of problems that threatened the integrity of the data, including improper procedures, lack of adherence to data collection rules, and inaccurate mathematical calculation of results.
S L, Merritt, A P, Keegan, P W, Mercer
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Monocular versus binocular pupillometry
Journal of Cataract and Refractive Surgery, 2004To quantify differences between monocular and binocular pupil size measurement under scotopic and mesopic conditions.Department of Ophthalmology, Johannes Gutenberg-University, and Department of Medical Biometry, Epidemiology and Informatics, University of Mainz, Mainz, Germany.Computerized dynamic pupillometry (P2000 SA, Procyon Instruments Ltd.) was ...
Sabine, Kurz +3 more
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Automated pupillometry in space neuroscience
Life Sciences in Space Research, 2023Modern pupillometers are automated, thereby providing an objective, accurate, and reliable evaluation of various aspects of the pupillary light reflex at precision levels that were previously unobtainable. There are many gaps in knowledge regarding pupil size and pupillary light reflex in nervous system changes related to space travel given the ...
Bader H. Shirah +3 more
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SPIE Proceedings, 2014
We report pupillometry results corresponding to three studies. A first study aims at measuring 2D pupil geometry with high precision (below 2 microns) at high frequency (more than 450Hz). The two other studies aim at measuring 3D pupil movements, with and without a chin rest. Results of measurements over 42 subjects are presented.
Serge Meimon +6 more
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We report pupillometry results corresponding to three studies. A first study aims at measuring 2D pupil geometry with high precision (below 2 microns) at high frequency (more than 450Hz). The two other studies aim at measuring 3D pupil movements, with and without a chin rest. Results of measurements over 42 subjects are presented.
Serge Meimon +6 more
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Pupillometry in clinically sleepy patients
Sleep Medicine, 2002Investigators have suggested using pupillometry to assess alertness in hypersomnolent patients. In this study we assessed hypersomnolent patients and normal volunteers by using pupillometry and examined the usefulness of this technique for the diagnosis of pathologic sleepiness in individual patients.Forty-nine patients were examined by pupillometry ...
Jay W, McLaren +3 more
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Infrared Pupillometry During Uncal Herniation
Journal of Neurosurgical Anesthesiology, 2002Infrared pupillary scans have been used extensively as an objective measure of pupillary reflexes during pharmacological studies of human subjects, but no previous scans have documented the pupillary changes during transtentorial uncal herniation. We present infrared pupillary scans from three patients with brain stem compression secondary to expanding
Geoffrey T, Manley, Merlin D, Larson
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Pupillometry of Grapheme-Color Synaesthesia
Cortex, 2006Pupil diameters of color-grapheme synaesthetes were measured with an infrared eye-tracker while Stroop-like alphanumeric symbols were passively viewed. Pupils dilated more when synaesthetes viewed incongruently-colored symbols than congruently-colored symbols or symbols printed in the standard black ink.
Helle Gaare, Paulsen, Bruno, Laeng
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