نتایج جستجو برای: pupil

تعداد نتایج: 10188  

Journal: :Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians 2005
Sanjeev Kasthurirangan Adrian Glasser

The static and dynamic aspects of the pupil response associated with various amplitudes of far-to-near (accommodation) and near-to-far (disaccommodation) focusing responses were evaluated in this study. Dynamic refractive and pupillary changes were measured simultaneously during focusing responses to targets at real distances in 12 young (23-26 years) emmetropic subjects. The targets were prese...

2016
Rajaraman Suryakumar Robert Allison

We investigated the dynamics of accommodative and pupillary responses to random-dot stereograms presented in crossed and uncrossed disparity in six visually normal young adult subjects (mean age=25.8±3.1 years). Accommodation and pupil measures were monitored monocularly with a custom built photorefraction system while subjects fixated at the center of a random-dot stereogram. On each trial, th...

Journal: :Anaesthesia 1980

Journal: :British Journal of Ophthalmology 1941

Journal: :Journal of Comparative Physiology A 1979

2015
Georgia Elafoudi Vladimir Stankovic Lina Stankovic Deepti Pappusetti Hari Kalva

Eye movements and changes in pupil dilation are known to provide information about viewer’s attention and interaction with visual content. This paper evaluates different statistical and signal processing methods for autonomously analysing pupil dilation signals and extracting information about viewer’s attention when perceiving visual information. In particular, using a commercial video-based e...

2002
Minoru Nakayama Yasutaka Shimizu

It is well known that the measuring of pupil size is influenced by noises and blinking. This paper describes the development of an estimation model of pupil size for ’blink artifact’ which is based on a 3 layered perceptron with back propagation method. The model was trained by pupil responses with artificial blinks. It was found that pupil size during the blink period could be estimated accord...

2010
Ken Asakawa Nobuyuki Shoji Hitoshi Ishikawa Kimiya Shimizu

OBJECTIVE To calculate the pattern deviation for identifying abnormal points of pupil perimetry, and also to evaluate the grayscale display for distinguishing glaucomatous pupil field loss (abnormal test points) from normal pupil field (normal test points). METHODS Fourteen patients ranging in age from 51 to 80 years, who had normal-tension glaucoma (6 eyes) and primary open-angle glaucoma (8...

2015
Eefje W. M. Rondeel Henk van Steenbergen Rob W. Holland Ad van Knippenberg

The present study investigated resource allocation, as measured by pupil dilation, in tasks measuring updating (2-Back task), inhibition (Stroop task) and switching (Number Switch task). Because each cognitive control component has unique characteristics, differences in patterns of resource allocation were expected. Pupil and behavioral data from 35 participants were analyzed. In the 2-Back tas...

Journal: :PloS one 2016
Yang Wang Adriana A Zekveld Graham Naylor Barbara Ohlenforst Elise P Jansma Artur Lorens Thomas Lunner Sophia E Kramer

CONTEXT Although the pupil light reflex has been widely used as a clinical diagnostic tool for autonomic nervous system dysfunction, there is no systematic review available to summarize the evidence that the pupil light reflex is a sensitive method to detect parasympathetic dysfunction. Meanwhile, the relationship between parasympathetic functioning and hearing impairment is relatively unknown....

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید