Results 81 to 90 of about 527 (127)

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
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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, 1991
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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Extraoccipital photoparoxysmal response in a case of focal encephalitis

Epileptic Disorders, 2011
ABSTRACTPhotoparoxysmal response (PPR) is commonly associated with idiopathic generalised epilepsies. Most of the focal events induced by intermittent photic stimulation (IPS) are reported to be of occipital origin. Only six temporal lobe epilepsy patients have been reported in the literature with focal PPR at extraoccipital sites.
Anis, Jukkarwala, Haseeb, Hassan, Muralidharan, Nair, Rajesh S, Iyer   +3 more
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Photosensitive epilepsies and pathophysiologic mechanisms of the photoparoxysmal response

Neurology, 1999
To identify the pathophysiologic mechanisms of the photoparoxysmal response (PPR) in various photosensitive epilepsy syndromes, and to discuss the relation between these pathophysiologic mechanisms and the classification of epilepsies and epileptic syndromes.The authors found two types of pathophysiologic mechanisms of PPRs (wavelength-dependent PPRs ...
Y, Takahashi, T, Fujiwara, K, Yagi, M, Seino   +3 more
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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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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 responses in children: their characteristics and clinical correlates

Pediatric Neurology, 2003
This study evaluates the characteristics of photoparoxysmal responses elicited with intermittent photic stimulation during a routine electroencephalogram in childhood and correlated this with the clinical profile of the child. Photoparoxysmal responses occurred in 8% (21/263) of children where activation was undertaken.
Lakshmi, Nagarajan, Alpana, Kulkarni, Linda, Palumbo-Clark, Pauline Bernadette, Gregory, Peter John, Walsh, Sasson Stephen, Gubbay, Jonathon Michael, Silberstein, Ernst Peter, Silberstein, Emma Louise, Carty, Wendy Rosemary, Dimitroff   +9 more
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The different patterns of the photoparoxysmal response — a genetic study

Electroencephalography and Clinical Neurophysiology, 1992
In order to investigate the significance of different patterns of the photoparoxysmal response (PPR), an electroencephalographic family study on 135 probands and 371 relatives was carried out. The PPR was subclassified in 4 phenotypically different types. Considering all types of PPR, the incidence was equal in siblings of probands with epilepsy and in
S, Waltz, H J, Christen, H, Doose
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