Three patients with EEG documented ictal catatonia, a nonconvulsive status epilepticus, who responded dramatically to intravenous phenytoin are described. The EEG showed continuous bilateral pseudoperiodic sharp waves and spike discharges in one patient, spike and wave complexes were seen prominently in the right fronto-central region in another, and the EEG of the third patient showed periodic...

A new algorithm for the detection of oscillatory events in the EEG is presented. By estimating autoregressive (AR) models on short segments the EEG is described as a superposition of harmonic oscillators with damping and frequencies varying in time. Oscillatory events are detected, whenever the damping of one or more frequencies falls below a predefined threshold. The algorithm works well for t...

A computer program (EEG Analysis) was developed for the preclinical laboratory course in physiology held for medical and dental students. It offers an off-line analysis of a set of typical and frequently occurring physiological and pathological electroencephalogram (EEG) and evoked potential (EP) recordings, which are stored in an IBM-compatible personal computer (PC) system. The users are requ...

A slow oscillation (< 1 Hz) has recently been described in intracellular recordings from the neocortex and thalamus (Steriade et al., 1993c-e). The aim of the present study was to determine the phase relations between cortical and thalamic neuronal activities during the slow EEG oscillation. Intracellular recordings were performed in anesthetized cats from neurons in motor and somatosensory cor...

OBJECTIVE To establish the effectiveness of EEG biofeedback using beta training as a relaxation technique and ultimately reducing anxiety levels of patients with confirmed unstable angina or myocardial infarction. METHODOLOGY Patients with confirmed unstable angina or myocardial infarction referred by cardiologists were recruited 2-3 days after their cardiac event from the cardiology wards. T...

Epilepsy is a chronic brain disease, of varied etiology, defined by the presence of the seizures of definite epileptic nature and by evolutional criteria, made of their tendencies to repeat in absence of triggering factors, known at variable intervals. The diagnosis of this disease is based on the clinical features and electrophysiology of the brain. Electroencephalogram (EEG) is the efficientl...

While most quality studies measure purely the subjectively perceived quality of videos, physiological measurements can give more detailed information about the perception of multimedia consumers. Thus, they provide better information about long-term effects as they are difficult to estimate by purely subjective studies. The current study uses electroencephalography (EEG) to measure effects of f...

BACKGROUND In view of the disturbed esophageal peristaltic activity and abnormal esophageal motility in gastroesophageal reflux disease, (GERD), we investigated the hypothesis that these changes result from a disordered myoelectric activity of the esophagus. METHODS The electric activity of the esophagus (electroesophagogram, EEG) was studied in 27 patients with GERD (16 men, 11 women, mean a...