Results 41 to 50 of about 85,203 (280)

GraFIX: a semiautomatic approach for parsing low- and high-quality eye-tracking data [PDF]

open access: yes, 2014
Fixation durations (FD) have been used widely as a measurement of information processing and attention. However, issues like data quality can seriously influence the accuracy of the fixation detection methods and, thus, affect the validity of our results
Johnson, Mark H.   +2 more
core   +2 more sources

Current Trends in Human Pupil Localization: A Review

open access: yesIEEE Access, 2023
Pupil localization extracts pupil center coordinates from images and videos of the human eye along with the pupillary boundary. Pupil localization essentially plays a major role in identity verification, disease recognition, visual focus of attention ...
Rasanjalee Rathnayake   +7 more
doaj   +1 more source

The effect of pupil size and peripheral brightness on detection and discrimination performance [PDF]

open access: yesPeerJ, 2019
It is easier to read dark text on a bright background (positive polarity) than to read bright text on a dark background (negative polarity). This positive-polarity advantage is often linked to pupil size: A bright background induces small pupils, which ...
Sebastiaan Mathôt, Yavor Ivanov
doaj   +2 more sources

Pupillometry as a reliable metric of auditory detection and discrimination across diverse stimulus paradigms in animal models

open access: yesScientific Reports, 2021
Estimates of detection and discrimination thresholds are often used to explore broad perceptual similarities between human subjects and animal models.
Pilar Montes-Lourido   +3 more
doaj   +1 more source

Collecting and Analyzing Eye-Tracking Data in Outdoor Environments

open access: yesJournal of Eye Movement Research, 2012
Natural outdoor conditions pose unique obstacles for researchers, above and beyond those inherent to all mobile eye-tracking research. During analyses of a large set of eye-tracking data collected on geologists examining outdoor scenes, we have found ...
Karen M. Evans   +3 more
doaj   +1 more source

Phonological discrimination and contrast detection in pupillometry

open access: yesFrontiers in Psychology, 2023
IntroductionThe perception of phonemes is guided by both low-level acoustic cues and high-level linguistic context. However, differentiating between these two types of processing can be challenging.
Julia S. C. Chiossi   +6 more
doaj   +1 more source

Spectral signature and behavioral consequence of spontaneous shifts of pupil-linked arousal in human

open access: yeseLife, 2021
Arousal levels perpetually rise and fall spontaneously. How markers of arousal—pupil size and frequency content of brain activity—relate to each other and influence behavior in humans is poorly understood.
Ella Podvalny, Leana E King, Biyu J He
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   +3 more sources

Post-coronagraphic tip-tilt sensing for vortex phase masks: the QACITS technique [PDF]

open access: yes, 2015
Small inner working angle coronagraphs, like the vortex phase mask, are essential to exploit the full potential of ground-based telescopes in the context of exoplanet detection and characterization.
Absil, Olivier   +3 more
core   +5 more sources

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