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Neuroscience Journal
Volume 2016 (2016), Article ID 5050278, 6 pages
Research Article

IPS Interest in the EEG of Patients after a Single Epileptic Seizure

1Unit of Nervous and Endocrine Physiology, Laboratory of Genetics and Neuroendocrine Physiology, Department of Biology, Faculty of Sciences, Ibn Tofail University, PB 133, 14000 Kenitra, Morocco
2Neurophysiology Department, Mohamed V Teaching Military Hospital, Rabat 10100, Morocco
3Service of Neurology, Cheikh Khalifa Hospital, Casablanca 82403, Morocco

Received 21 April 2016; Revised 10 June 2016; Accepted 29 June 2016

Academic Editor: Pasquale Striano

Copyright © 2016 Fatima Zahra Taoufiqi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Objective. This study aims to evaluate the incidence of pathological cerebral activity responses to intermittent rhythmic photic stimulation (IPS) after a single epileptic seizure. Patients and Methods. One hundred and thirty-seven EEGs were performed at the Neurophysiology Department of Mohamed V Teaching Military Hospital in Rabat. Clinical and EEG data was collected. Results. 9.5% of our patients had photoparoxysmal discharges (PPD). Incidence was higher in males than in females, but value was not significant (), and it was higher in children compared to adults with significant value (). The most epileptogenic frequencies were within the range 15–20 Hz. 63 patients had an EEG after 72 hours; among them 11 were photosensitive (). The frequency of the PPR was significantly higher in patients with generalized abnormalities than in focal abnormalities (). EEG confirmed a genetic generalized epilepsy in 8 cases among 13 photosensitive patients. Conclusion. PPR is age related. The frequencies within the range 15–20 Hz should inevitably be included in EEG protocols. The presence of PPR after a first seizure is probably more in favor of generalized seizure rather than the other type of seizure. PPR seems independent from the delay Seizure-EEG. Our study did not show an association between sex and photosensitivity.