Results 11 to 20 of about 32,760 (219)

Photic Stimulation: Standardization of Screening Methods [PDF]

open access: yesEpilepsia, 1999
Summary:Purpose: Differences in methodology of intermittent photic stimulation within and between countries in Europe make collaborative research and interpretation of results difficult.Method: Experts in the field of photic stimulation from European countries have given an overview of methods used in routine photic stimulation.
D G, Kasteleijn-Nolst Trenité   +3 more
exaly   +7 more sources

Electroencephalography Alpha Traveling Waves as Early Predictors of Treatment Response in Major Depressive Episodes: Insights from Intermittent Photic Stimulation [PDF]

open access: yesBiomedicines
Background: Early evaluation of treatment efficacy in adolescents and young adults with major depressive episodes (MDEs) remains a clinical challenge, often delaying timely therapeutic adjustments.
Xiaojing Guo   +10 more
doaj   +2 more sources

Burst-Suppression EEG Reactivity to Photic Stimulation—A Translational Biomarker in Hypoxic–Ischemic Brain Injury [PDF]

open access: yesBiomolecules
The reactivity of an electroencephalogram (EEG) to external stimuli is impaired in comatose patients showing burst-suppression (BS) patterns following hypoxic–ischemic brain injury (HIBI).
Alexandru-Cătălin Pâslaru   +8 more
doaj   +2 more sources

The patent foramen ovale may alter migraine brain activity: A pilot study of electroencephalography spectrum and functional connectivity analysis

open access: yesFrontiers in Molecular Neuroscience, 2023
BackgroundA link has been shown between patent foramen ovale (PFO) and migraine, particularly migraine with aura. However, it is unknown if PFO might cause migraine by altering cortical excitability and neural network, which may lower the threshold of ...
Xiangyu Lei   +9 more
doaj   +1 more source

Breaking the Boring Billion

open access: yesGeophysical Monograph Series, Page 487-501., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Charles W. Diamond   +3 more
wiley  

+1 more source

Brain potential response to activation procedures in children with refractive amblyopia

open access: yesJournal of Ophthalmology, 2020
Purpose: To identify the features of cortical potential response to activation procedures in patients with mild and moderate refractive amblyopia.
I.M. Boichuk, Badri Wael
doaj   +1 more source

Cortical spreading depression can be triggered by sensory stimulation in primed wild type mouse brain: a mechanistic insight to migraine aura generation

open access: yesThe Journal of Headache and Pain, 2022
Background Unlike the spontaneously appearing aura in migraineurs, experimentally, cortical spreading depression (CSD), the neurophysiological correlate of aura is induced by non-physiological stimuli.
Sahin Hanalioglu   +7 more
doaj   +1 more source

Does visual cortex lactate increase following photic stimulation in migraine without aura patients?: a functional 1H-MRS study [PDF]

open access: yes, 2011
Proton magnetic resonance spectroscopy ((1)H-MRS) has been used in a number of studies to assess noninvasively the temporal changes of lactate (Lac) in the activated human brain.
Reyngoudt, Harmen   +6 more
core   +2 more sources

Photosensitive Self-Induced Seizures Since Childhood

open access: yesActa Médica Portuguesa, 2021
A 15-year-old girl was admitted to the emergency room because of a bilateral tonic-clonic seizure. The family reported that the episode began with rapid hand movements in front of the patient’s eyes while staring at the sun. The patient has a history of
Eduardo Palha-Fernandes   +2 more
doaj   +1 more source

Frequency of intermittent photic stimulation: Effect on photic afterdischarges, photic driving, and behavioral activity [PDF]

open access: yesBulletin of the Psychonomic Society, 1976
The effects of various frequencies of intermittent photic stimulation (1/7, 1/3.5, 1/1, 3/1, 6/1, 9/1, 15/1, 18/1, 24/1, and 60/1 sec) on photically evoked afterdischarges (PhADs), photic driving (PD), and behavioral activity (gridcrossings) were examined in rats.
Erin D. Bigler, Donovan E. Fleming
openaire   +1 more source

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