scholarly journals False Lateralization of Seizure Onset by Scalp EEG in Non-lesional Temporal Lobe Epilepsy : A Surgical Case Report

2014 ◽  
Vol 23 (9) ◽  
pp. 744-749
Author(s):  
Masaki Iwasaki ◽  
Kazutaka Jin ◽  
Kazuhiro Kato ◽  
Shin-ichiro Osawa ◽  
Yoshiteru Shimoda ◽  
...  
Seizure ◽  
2011 ◽  
Vol 20 (6) ◽  
pp. 494-499 ◽  
Author(s):  
Bola Adamolekun ◽  
Pegah Afra ◽  
F.A. Boop

2012 ◽  
Vol 21 (9) ◽  
pp. 736-740
Author(s):  
Yoshihiro Sumi ◽  
Emiko Muramoto ◽  
Hirohiko Nakamura ◽  
Masahiro Mizobuchi ◽  
Hideaki Shiraishi ◽  
...  

2021 ◽  
pp. 155005942110627
Author(s):  
Nobutaka Mukae ◽  
Takafumi Shimogawa ◽  
Ayumi Sakata ◽  
Taira Uehara ◽  
Hiroshi Shigeto ◽  
...  

Objective: Previous reports on the simultaneous recording of electroencephalography (EEG) and electrocorticography (ECoG) have demonstrated that, in patients with temporal lobe epilepsy (TLE), ictal ECoG discharges with an amplitude as high as 1000 μV originating from the medial temporal lobe could not be recorded on EEG. In contrast, ictal EEG discharges were recorded after ictal ECoG discharges propagated to the lateral temporal lobe. Here, we report a case of TLE in which the ictal EEG discharges, corresponding to ictal ECoG discharges confined to the medial temporal lobe, were recorded. Case report: In the present case, ictal EEG discharges were hardly recognized when the amplitude of the ECoG discharges was less than 1500 μV. During the evolution and burst suppression phase, corresponding to highly synchronized ECoG discharges with amplitudes greater than 1500 to 2000 μV, rhythmic negative waves with the same frequency were clearly recorded both on the lateral temporal lobe and scalp. The amplitude of the lateral temporal ECoG was approximately one-tenth of that of the medial temporal ECoG. The amplitude of the scalp EEG was approximately one-tenth of that of the lateral temporal ECoG. Conclusions: Highly synchronized ictal ECoG discharges with high amplitude of greater than 1500 to 2000 μV in the medial temporal lobe could be recorded on the scalp as ictal EEG discharges via volume conduction.


2021 ◽  
Vol 49 (1) ◽  
pp. 030006052098281
Author(s):  
Liang Zhang ◽  
Hao Yu ◽  
Dan Li ◽  
Hui Qian ◽  
Yuchao Chen

Epilepsy is a chronic neurological disorder that is characterized by episodes of seizure. Sexual dysfunction has been reported in patients with seizure, which mostly manifests as erectile dysfunction and premature ejaculation in men. In this study, we report the case of a 65-year-old Chinese man with frequent spermatorrhea. Electroencephalography suggested local epilepsy in the left temporal lobe. After treatment with anti-epilepsy drugs, the symptoms disappeared and did not recur. To the best of our knowledge, this is the first reported case of epilepsy-induced spermatorrhea. The symptoms of spermatorrhea are probably a rare manifestation of seizure. When repetitive stereotyped symptoms occur, seizure should be considered, and tentative anti-epileptic treatment may be a good option.


Neurology ◽  
1995 ◽  
Vol 45 (5) ◽  
pp. 889-896 ◽  
Author(s):  
B. J. Steinhoff ◽  
N. K. So ◽  
S. Lim ◽  
H. O. Luders

Author(s):  
Mohammed M. Jan ◽  
Mark Sadler ◽  
Susan R. Rahey

Electroencephalography (EEG) is an important tool for diagnosing, lateralizing and localizing temporal lobe seizures. In this paper, we review the EEG characteristics of temporal lobe epilepsy (TLE). Several “non-standard” electrodes may be needed to further evaluate the EEG localization, Ictal EEG recording is a major component of preoperative protocols for surgical consideration. Various ictal rhythms have been described including background attenuation, start-stop-start phenomenon, irregular 2-5 Hz lateralized activity, and 5-10 Hz sinusoidal waves or repetitive epileptiform discharges. The postictal EEG can also provide valuable lateralizing information. Postictal delta can be lateralized in 60% of patients with TLE and is concordant with the side of seizure onset in most patients. When patients are being considered for resective surgery, invasive EEG recordings may be needed. Accurate localization of the seizure onset in these patients is required for successful surgical management.


2002 ◽  
Vol 51 (1-2) ◽  
pp. 211
Author(s):  
Achim Olbrich ◽  
Lydia Urak ◽  
Gudrun Gröppel ◽  
Wolfgang Serles ◽  
Klaus Novak ◽  
...  

Seizure ◽  
2002 ◽  
Vol 11 (3) ◽  
pp. 163-168 ◽  
Author(s):  
Yuzo Sakai ◽  
Hiromi Nagano ◽  
Ayumi Sakata ◽  
Sachiko Kinoshita ◽  
Naotaka Hamasaki ◽  
...  

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