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KMID : 1044320170190010058
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Annals of Clinical Neurophysiology
2017 Volume.19 No. 1 p.58 ~ p.63
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EEG spikes resembling cardiac M-shaped waves in the EKG: the cerebral M pattern
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Janati A. Bruce
ALGhasab Nai S.
Aziz Tariq
Haq Fazal
ALGhassab Fahad Saad
Iqhbal Tariq
Alenazy Rehab Khaleel
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Abstract
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Studies of interictal epileptiform discharges are essential for improving the diagnosis, classification, and management of epilepsy. In this case series we sought to identify the clinical and neurophysiological significance of bifid spikes, whose pattern bears a strong resemblance to the cardiac M pattern. We hypothesize that, analogous to the cardiac M pattern, the cerebral M pattern is generated by a conduction defect associated with asynchronous spatiotemporal averaging of electrical signals in the cortex, resulting in the signals reaching the scalp with different latencies. Unlike the cardiac M pattern, the pathology underlying the cerebral M pattern is unknown, although congenital CNS anomalies may be a culprit.
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KEYWORD
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Interictal epileptiform discharges, Bifid spikes, Cerebral M pattern
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