Results 111 to 120 of about 568 (146)

Effects of clonazepam on self-induced photoparoxysmal responses

Brain and Development, 2014
A 5-year-old girl exhibited daily episodes of repetitive blinking lasting 5-10 s. Electroencephalography (EEG) revealed marked photoparoxysmal responses (PPR) at 3-20 Hz of photic stimulation and diffuse spike-wave bursts during sleep. A 24-h video EEG identified 11 episodes of repetitive blinking, 3 of which resulted in widespread spike-wave ...
Yoshiaki, Saito, Yuko, Matsuda, Kenji, Sugai, Eiji, Nakagawa, Akihiko, Ishiyama, Takashi, Saito, Hiforumi, Komaki, Masayuki, Sasaki, Akiko, Miyata   +8 more
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Electrographic Features of Epilepsy With Eyelid Myoclonia With Photoparoxysmal Responses

Journal of Clinical Neurophysiology, 2022
Purpose: Epilepsy with eyelid myoclonia (EMA) is characterized by eyelid myoclonia, eyelid closure sensitivity, and photosensitivity. EEG may manifest with frontal-predominant (FPEDs) or occipital-predominant epileptiform discharges (OPEDs). Data on clinical and electrographic features of these two subtypes are lacking.
Ifrah, Zawar, Bijina, Shreshtha, Daniela, Benech, Richard C, Burgess, Juan, Bulacio, Elia M Pestana, Knight   +5 more
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Abolition of Photoparoxysmal Response in Progressive Myoclonus Epilepsy

European Neurology, 2008
We have investigated the effect of piracetam on photoparoxysmal responses in 3 patients with progressive myoclonus epilepsy. With doses of up to 10 g/day, elimination of photoparoxysmal responses was achieved in all 3 patients. Corresponding to EEG improvement, the clinical performance improved slightly in 2 patients and definitely in 1 patient when ...
W, Paulus, S, Ried, S R, Stodieck, D, Schmidt   +3 more
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Television‐induced electronegative photoparoxysmal response: an extratemporal seizure mimic?

Epileptic Disorders, 2021
AbstractVideo‐EEG monitoring is an established gold‐standard procedure for diagnosis and differentiation of epileptic and non‐epileptic seizures. Epilepsy misdiagnosis, to which factors such as EEG artifact misinterpretation contribute to, is common, and can have long‐lasting iatrogenic repercussions to the clinical management of affected patients ...
Gabriel, Calado, Nimit, Desai, Dorothee, Kasteleijn, William O, Tatum   +3 more
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2. Photoparoxysmal response in patients with migraine and epilepsy

Clinical Neurophysiology, 2014
Objectives 5% of patients with epilepsy and migraines are photosensitive and liable to visually induces seizures. The similarity between intermittent photic stimulation (IPS) that provokes seizures and those provokes minimal discomfort and a headache suggests that the precipitants share a common neural mechanism.
Umang Modi, Paul Hwang
openaire   +1 more source

Low-Frequency Photoparoxysmal Response in Adults

Journal of Clinical Neurophysiology, 2012
Intermittent photic stimulation is performed during an EEG to evoke photoparoxysmal response. When they appear triggered by low-frequency stimulation in children, they are suggestive of rare diagnosis, that is, neuronal ceroid lipofuscinosis. Among adults, their significance is less well understood. Low-frequency (
Julie, Guellerin, Sophie, Hamelin, Cecile, Sabourdy, Laurent, Vercueil   +3 more
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Significance of Spontaneous Epileptiform Abnormalities Associated With a Photoparoxysmal Response

Neurology, 1995
Spontaneous epileptiform abnormalities (SEAs) are reported to occur in up to 65% of patients with a photoparoxysmal response (PPR). Although the PPR is usually assumed to indicate primary generalized epilepsy, the clinical significance of associated SEAs is not known.
F G, Gilliam, K H, Chiappa
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Wavelength Specificity of Photoparoxysmal Responses in Idiopathic Generalized Epilepsy

Epilepsia, 1995
Summary: Using optic filters, we analyzed the wavelength specificity of photoparoxysmal responses (PPR) in photosensitive patients with idiopathic generalized epilepsy (ICE). We specified the wavelength spectrum ∼700 nm (660–720 nm) as the only visible spectrum essential for eliciting PPR in some normal trichromat IGE patients and showed that any ...
Y, Takahashi, T, Fujiwara, K, Yagi, M, Seino   +3 more
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Photoparoxysmal response in late infantile neuronal ceroid-lipofuscinosis

Pediatric Neurology, 1998
A patient presented with rapid developmental regression whose MRI findings suggested a leukodystrophy, but nerve, muscle, skin, and bone marrow biopsies were unrevealing. A characteristic photoparoxysmal response on electroencephalogram provided an important clue for the correct diagnosis of late infantile neuronal ceroid-lipofuscinosis, which was ...
S Z, Naqvi, R L, Beach, D M, Armao, R S, Greenwood   +3 more
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Mesial temporal lobe epilepsy with focal photoparoxysmal response

Epileptic Disorders, 2003
ABSTRACT Intermittent photic stimulation (IPS) may produce epileptiform discharges and seizures, most of which are generalized. There are several cases of focal seizures of occipital origin induced by IPS and only five reported cases originating from the temporal lobe (TL).
Lia A, Fiore, Kette, Valente, Gary, Gronich, Carla R, Ono, Carlos A, Buchpiguel   +4 more
openaire   +2 more sources