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This study presents a novel technique to measure the motion of the eyelid during blinking. High-speed imaging and digital image correlation (DIC) were employed to monitor the eyelid during blinking in a noninvasive manner. Both spontaneous and reflex blinks were studied. A black liquid eyeliner was used to generate a speckle pattern on the surface of the eyelid. Facet motion captured through a DIC analysis software generated kinematic data for each blink. Calculations using this dataset yielded information on the duration of the blink, eyelid displacements, and peak eyelid velocities. A consistent dataset quantified the difference between blink types and reinforced the repeatability of this DIC analysis method to measure the kinematics of blinking.
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http://dx.doi.org/10.1115/1.4067082 | DOI Listing |
Sci Data
April 2025
State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Minhang District, Shanghai, 200240, P. R. China.
In Brain-Computer Interface (BCI) research, the detailed study of blinks is crucial. They can be considered as noise, affecting the efficiency and accuracy of decoding users' cognitive states and intentions, or as potential features, providing valuable insights into users' behavior and interaction patterns. We introduce a large dataset capturing electroencephalogram (EEG) signals, eye-tracking, high-speed camera recordings, as well as subjects' mental states and characteristics, to provide a multifactor analysis of eye-related movements.
View Article and Find Full Text PDFMuscle Nerve
March 2025
Department of Medicine, St Vincent's Hospital Melbourne, The University of Melbourne, Melbourne, Victoria, Australia.
Introduction/aims: Electrophysiological investigations in early Guillain-Barré Syndrome (GBS) can be nondiagnostic. Improved testing for facial weakness in the early phase of GBS may improve diagnostic processes, as such weakness is found in approximately 50% of patients with GBS. This work pilots the utility of high-speed video analysis to complement blink reflex testing in early GBS.
View Article and Find Full Text PDFOrbit
August 2025
Department of Ophthalmology and Visual Sciences, University of Iowa, Iowa City, Iowa, USA.
Purpose: To assess the trigeminal blink reflex in chronic orbital pain and its modification by orbital anesthetic injections using a novel blink reflexometer.
Methods: The EyeStat (Generation 3, Blinktbi, Inc. Charleston, SC) is a device that triggers and analyzes the carbon dioxide puff-evoked trigeminal blink response.
J Biomech Eng
January 2025
School of Medicine, Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, MI 48105.
This study presents a novel technique to measure the motion of the eyelid during blinking. High-speed imaging and digital image correlation (DIC) were employed to monitor the eyelid during blinking in a noninvasive manner. Both spontaneous and reflex blinks were studied.
View Article and Find Full Text PDFIEEE Trans Vis Comput Graph
May 2024
Eye tracking has shown great promise in many scientific fields and daily applications, ranging from the early detection of mental health disorders to foveated rendering in virtual reality (VR). These applications all call for a robust system for high-frequency near-eye movement sensing and analysis in high precision, which cannot be guaranteed by the existing eye tracking solutions with CCD/CMOS cameras. To bridge the gap, in this paper, we propose Swift-Eye, an offline precise and robust pupil estimation and tracking framework to support high-frequency near-eye movement analysis, especially when the pupil region is partially occluded.
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