Epilepsy is an electrophysiological disorder of the brain, characterized by recurrent seizures. Electroencephalogram (EEG) is a test that measures and records the electrical activity of the brain, and is widely used in the detection and analysis of epileptic seizures. However, it is often difficult to identify subtle but critical changes in the EEG waveform by visual inspection, thus opening up...

OBJECTIVES After a reasonable seizure-free period, discontinuation of antiepileptic drugs (AED) is usually decided in epileptic patients despite the risk of seizure recurrence. In children, risk of recurrence after discontinuation of AED is generally 20-40%; however, there is still no general agreement on the criteria to predict safe discontinuation. This study was designed to determine the ris...

Electroencephalogram (EEG) is the recording of electrical activity through various electrode sensors placed on the scalp. The electrical signal is recorded as waves that can be classified as normal or abnormal. Different types of normal waves can indicate various states or activity levels of the functioning of the brain. Abnormal electricity of the brain may represent many brain disorders, whic...

TMS-evoked cortical responses can be measured using simultaneous electroencephalography (TMS-EEG) to directly quantify cortical connectivity in the human brain. The purpose of this study was to evaluate interhemispheric cortical connectivity between the primary motor cortices (M1s) in participants with chronic stroke and controls using TMS-EEG. Ten participants with chronic stroke and four cont...

Diagnosis of Creutzfeldt-Jakob disease (CJD) is often challenging in elderly individuals, not only because of its variable clinical features but also because of nonspecific changes on the electroencephalogram (EEG) in the early stages of the disease. Here we report on a patient who presented with progressive cognitive dysfunction, psychiatric symptoms, involuntary facio-brachio-crural movement,...

New diagnostic criteria define epilepsy as a disorder of the brain characterized by an enduring predisposition to generate epileptic seizures. Two factors are associated with an increased risk of relapse: the presence of a cerebral lesion and epileptiform abnormalities (EA) in the electroencephalogram (EEG). In this paper we focus on the risk of relapse after a first unprovoked seizure; we revi...

Electro-enccphalographic (E.E.G.) pattern of 35 drug free schizophrenic patients was studied. 15 cases (42.86%) had abnormal EEG records, 9 records out of 15 abnormal records showed effect of laterality. Laterality of abnormality to left hemisphers was present in 7 cases while laterality to right hemisphere was present only in 2 cases. Cortical locations of abnormalities were also studied. The ...

Electroencephalography (EEG) is a standard tool for monitoring brain states in humans. Understanding the molecular and cellular mechanisms underlying diverse EEG rhythms can be facilitated by using mouse models under molecular, pharmacological, or electrophysiological manipulations. The small size of the mouse brain, however, poses a severe limitation in the spatial information of EEG. To overc...

If the brain is regarded as a system, it will be one of most complex systems in universe. Traditional analysis and classification methods major depressive disorder (MDD) based on electroencephalography (EEG) feature-levels often regard electrode isolated node ignore correlation between them, so it's difficult to find alters abnormal topological architecture brain. To solve this problem, we prop...

A 24-year-old male with recurrent hypersomnia associated with decreased blood flow in the thalamus on single photon emission computed tomography (SPECT) is reported. In the hypersomnolent period, the decrease of blood flow in the left thalamus was revealed in the SPECT and slow waves appeared sporadically or sometimes as a burst on the electroencephalogram (EEG). In a phase of insomnia in the c...