Results 11 to 20 of about 91,041 (333)

Monitoring Dark-State Dynamics of a Single Nitrogen-Vacancy Center in Nanodiamond by Auto-Correlation Spectroscopy: Photonionization and Recharging

open access: yesNanomaterials, 2021
In this letter, the photon-induced charge conversion dynamics of a single Nitrogen-Vacancy (NV) center in nanodiamond between two charge states, negative (NV−) and neutral (NV0), is studied by the auto-correlation function.
Mengdi Zhang, Bai-Yan Li, Jing Liu
doaj   +1 more source

Dynamic tear meniscus parameters in complete blinking: insights into dry eye assessment [PDF]

open access: yesInternational Journal of Ophthalmology, 2023
AIM: To investigate the relationship between dynamic tear meniscus parameters and dry eye using an automated tear meniscus segmentation method. METHODS: The analysis of tear meniscus videos captured within 5s after a complete blink includes data from 38 ...
Ying-Huai Zhang   +6 more
doaj   +1 more source

Eyelid Dysfunction in Neurodegenerative, Neurogenetic, and Neurometabolic Disease

open access: yesFrontiers in Neurology, 2017
Eye movement abnormalities are among the earliest clinical manifestations of inherited and acquired neurodegenerative diseases and play an integral role in their diagnosis.
Ali G. Hamedani   +4 more
doaj   +1 more source

Clinical Profile of Refractive Errors Associated with Screen Time in Children Aged 5-15 Years in a Tertiary Care Hospital of Southern India during COVID Pandemic: A Prospective Study [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2022
Introduction: Refractive errors cannot be prevented, but it is important to detect them early to improve the quality of life and prevention of blindness.
Navneeth Servey   +4 more
doaj   +1 more source

Non-ergodic Intensity Correlation Functions for Blinking Nano Crystals [PDF]

open access: yes, 2004
We investigate the non-ergodic properties of blinking nano-crystals using a stochastic approach. We calculate the distribution functions of the time averaged intensity correlation function and show that these distributions are not delta peaked on the ...
E. Barkai   +7 more
core   +1 more source

Asymmetry of Blinking [PDF]

open access: yesInvestigative Opthalmology & Visual Science, 2006
Too investigate asymmetry in eyelid movements with blinking, the stability of the asymmetry, and its modifiability in normal humans.Differences in the start time and amplitude between the two eyelids were assessed for voluntary blinks and reflex blinks evoked by supraorbital trigeminal nerve stimulation. These variables were also measured before and up
Iris S, Kassem, Craig, Evinger
openaire   +2 more sources

Blink and masseter inhibitory reflexes in Parkinson's disease [PDF]

open access: yesVojnosanitetski Pregled, 2010
Background/Aim. Idiopathic Parkinson's disease (PD) is a chronic, progressive, neurodegenerative disorder with prevalence from 60 to 187 per 100 000 persons in general population.
Stamenović Jelena   +2 more
doaj   +1 more source

Real-Time Deep Learning-Based Drowsiness Detection: Leveraging Computer-Vision and Eye-Blink Analyses for Enhanced Road Safety

open access: yesSensors, 2023
Drowsy driving can significantly affect driving performance and overall road safety. Statistically, the main causes are decreased alertness and attention of the drivers. The combination of deep learning and computer-vision algorithm applications has been
Furkat Safarov   +4 more
doaj   +1 more source

Time-locked perceptual fading induced by visual transients [PDF]

open access: yes, 2003
After prolonged fixation, a stationary object placed in the peripheral visual field fades and disappears from our visual awareness, especially at low luminance contrast (the Troxler effect).
Kamitani, Yukiyasu, Kanai, Ryota
core   +2 more sources

Quantifying protein densities on cell membranes using super-resolution optical fluctuation imaging [PDF]

open access: yes, 2017
Surface molecules, distributed in diverse patterns and clusters on cell membranes, influence vital functions of living cells. It is therefore important to understand their molecular surface organisation under different physiological and pathological ...
Benda, Aleš   +9 more
core   +3 more sources

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