Timely event-related synchronization fading and phase de-locking and their defects in migraine.

Objective: To investigate the characteristics of event-related synchronization (ERS) fading and phase de-locking of alpha waves during passive auditory stimulation (PAS) in the migraine patients.

Methods: The subjects were 16 adult women with migraine and 16 normal controls. Electroencephalographic (EEG) data obtained during PAS with standard (SS) and deviant stimuli (DS) were used.

Characteristics of patients with epilepsy who use a website providing healthcare information about epilepsy in South Korea.

We studied characteristics of epilepsy patients who use 'Epilia', a healthcare website for epilepsy patients, and the impact of 'Epilia' on patient satisfaction and attitude about epilepsy. A total of 153 epilepsy patients from 'Epilia' (online group) and 367 patients from epilepsy clinics (offline group) were recruited. A survey was done to investigate their socio-demographic, epilepsy-related, and psychological characteristics, as well as attitude alterations after beginning to use 'Epilia'.

Prevalence of treated epilepsy in Korea based on national health insurance data.

The Korean national health security system covers the entire population and all medical facilities. We aimed to estimate epilepsy prevalence, anticonvulsant utilization pattern and the cost. We identified prevalent epilepsy patients by the prescription of anticonvulsants under the diagnostic codes suggesting seizure or epilepsy from 2007 Korean National Health Insurance databases.

Utility of independent component analysis for interpretation of intracranial EEG.

Electrode arrays are sometimes implanted in the brains of patients with intractable epilepsy to better localize seizure foci before epilepsy surgery. Analysis of intracranial EEG (iEEG) recordings is typically performed in the electrode channel domain without explicit separation of the sources that generate the signals. However, intracranial EEG signals, like scalp EEG signals, could be linear mixtures of local activity and volume-conducted activity arising in multiple source areas.

Marital status of people with epilepsy in Korea.

A multicentre face-to-face interview was conducted to identify factors contributing to the marital status of people with epilepsy (PWE) in Korea. The marriage rate of PWEs was only 80% and the divorce rate was more than double that in the general population. Among the single subjects, 34% replied that they were unmarried because of epilepsy, and 76% of divorced PWEs replied that epilepsy was the cause of the divorce.

Familiarity with, understanding of, and attitudes toward epilepsy among people with epilepsy and healthy controls in South Korea.

This study identifies differences between people with epilepsy (PWE) and healthy controls in South Korea with respect to their familiarity with, understanding of, and attitudes toward epilepsy. PWE and controls older than 18 years of age were recruited from outpatient clinics and health promotion centers, respectively, associated with five university hospitals located throughout the country. Structured questionnaires consisting of 18 items were administered in face-to-face interviews.

Effect of a ketogenic diet on EEG: analysis of sample entropy.

Although ketogenic diet (KD) is an effective alternative therapy for controlling intractable seizures, the anticonvulsant mechanism still remains unclear. Sample entropy (SampEn) provides a generalized measure of regularity in time-series data. To investigate the potential anticonvulsive mechanism of a KD, we analyzed the SampEn of electroencephalography (EEG) data in patients with intractable pediatric epilepsy before and after treatment with a KD.

Source localization of triphasic waves: implications for the pathophysiological mechanism.

To investigate the current source location from the electroencephalograms (EEGs) of 12 patients who showed typical triphasic waves attributable to various causes, using the combination of a dipole source model and a distributed source model. The triphasic waves were explained by a single main dipole in 10 of the 12 patients, and 2 patients had two dipoles responsible for the triphasic waves. All the main dipoles had a radial orientation with respect to the frontal pole.

Source localization of periodic sharp wave complexes using independent component analysis in sporadic Creutzfeldt-Jakob disease.

Patients with Creutzfeldt-Jakob disease (CJD) show periodic sharp wave complexes (PSWCs) on electroencephalography (EEG) during the course of their illness. However, the source location of PSWCs and their pathophysiological mechanism remain unclear. Six patients with sporadic CJD who showed typical PSWCs on EEGs were selected for the study.

Massive hemoptysis after generalized tonic clonic seizure requiring mechanical ventilation.

A 38-year-old woman presented with massive hemoptysis (>200 mL/ 24 hours) occurring abruptly after generalized tonic clonic seizure. She experienced similar episodes of hemoptysis on three later occasions. Although the coexistence of hemoptysis and seizure has been reported, albeit rarely, as a clinical manifestation of postictal neurogenic pulmonary edema, massive hemoptysis after seizure is an extremely rare event with no recurrent cases of such episodes having ever been reported.