Results 121 to 130 of about 1,691 (156)
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Responses of the isolated mammalian retina to intermittent and steady photic stimulation
Vision Research, 1964Abstract The potential usually recorded from the isolated retina probably corresponds to the P-III component of Granit. It was found that during intermittent photic stimulation (IPS), all responses tended toward a set negative potential value but the response excursion was limited by the decay process of the potential. The rate of decay of the massed
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The clinical significance of occipital spikes as a sole response to intermittent photic stimulation
Electroencephalography and Clinical Neurophysiology, 1975Forty-five patients who showed occipital spikes as a sole response to IPS have been studied over a 9 year period. Occipital spikes induced by IPS are non-specific, not constantly present and in themselves are not indicative of epilepsy. Occipital spikes alone are seen in a very small percentage of clinical photosensitive patients.
M.C Maheshwari, P.M Jeavons
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Spatial Structure of Brain Electric Fields during Intermittent Photic Stimulation
Neuropsychobiology, 2001EEG changes in 27 young healthy male right-handed volunteers on intermittent photic stimulation (IPS) were estimated using global field power (GFP), EEG microstate modeling and analysis (EMMA), and low-resolution electromagnetic brain tomography (LORETA). The GFP significantly increased at flashing frequency and high harmonics.
T, Hirota +4 more
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[Headache and response to intermittent photic stimulation].
Rivista di neurologia, 1983It has been studied the answer to the LSI in migraine subjects (166) and with tension headache (198). Only in tree cases, which on migraine and two with tension headache, the answer given is anomalous to the LSI, with a frequency like those found in "normal" population.
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Epidemiology of Sensitivity of the Brain to Intermittent Photic Stimulation and Patterns
2020This article describes the evolution of studies of intermittent photic stimulation (IPS) and pattern sensitivity from a number of international EEG departments or laboratories in a variety of populations including normal children and adults and patients with and without epilepsy.
Luiz C. Barreto Silva +3 more
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Maturational changes of 5 Hz SSVEPs elicited by intermittent photic stimulation
International Journal of Psychophysiology, 2010We investigated the development of the magnitude and phase alignment of steady-state visual evoked potentials induced by 5 Hz intermittent photic stimulation in 46 children (3 to 16 years) and 8 adults, as a function of age. We found that, over the occipital region, magnitude values were the highest in 8-11-year old children, but decreased with age ...
Ala, Birca +10 more
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Electroencephalography and Clinical Neurophysiology, 1972
Abstract During routine EEG investigation of patients with photosensitive epilepsy and of patients with EEG abnormalities induced by intermittent photic stimulation (IPS) it was noted that two different photostimulators had different efficiencies in provoking occipital spikes and photoconvulsive responses. The difference appeared to be related to the
P M, Jeavons +3 more
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Abstract During routine EEG investigation of patients with photosensitive epilepsy and of patients with EEG abnormalities induced by intermittent photic stimulation (IPS) it was noted that two different photostimulators had different efficiencies in provoking occipital spikes and photoconvulsive responses. The difference appeared to be related to the
P M, Jeavons +3 more
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VISUAL EFFECTS OF SUBFUSIONAL RATES OF HIGH‐INTENSITY INTERMITTENT PHOTIC STIMULATION
American journal of optometry and archives of American Academy of Optometry, 1973ABSTRACT Intermittency rate. binocular versus monocular presentation, and visual subtense of the stimulus area were varied for high intensity periodic light stimuli. Verbal descriptions were obtained of the resulting subjective visual imagery. Possible theoretical interpretations of the various effects were discussed.
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Epilepsy & Behavior, 2005
Disqualifying criteria for aircrew in Europe (JAR-FCL 3) are, besides a diagnosis of epilepsy after the age of 5 and a history of episode(s) of disturbance of consciousness, epileptiform paroxysmal electroencephalographic abnormalities and focal slow waves.
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Disqualifying criteria for aircrew in Europe (JAR-FCL 3) are, besides a diagnosis of epilepsy after the age of 5 and a history of episode(s) of disturbance of consciousness, epileptiform paroxysmal electroencephalographic abnormalities and focal slow waves.
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Nystagmus induced by intermittent photic stimulation (flash induced nystagmus (FIN))
Documenta Ophthalmologica, 1977In man, as has been shown previously in rabbits and monkeys, a nystagmus can be elicited by monocular intermittent photic stimulation. The direction of nystagmus (FIN) is always towards the stimulated eye. This nystagmus strongly resembles latent nystagmus. Here the fast phase is always directed towards the 'non-occluded' eye.
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