Epileptiform activity on EEG is indicative of cortical hyperexcitability, which carries an increased risk for seizures and the presence of an epileptic network within the brain. There are several types of epileptiform activity, including single discharges (sharps and spikes) and rhythmic and/or periodic activity.

Electroencephalography (EEG) is the most useful test for assessment of patients with epilepsy. It can help establish the diagnosis of epilepsy and determine the type of seizure disorder and its site of origin. Epileptiform abnormalities in the EEG tracing may be focal or generalized.

2023年10月14日 · Epilepsy happens as a result of abnormal electrical brain activity, also known as a seizure, kind of like an electrical storm inside your head. And because your brain controls so much, a lot of different things can go wrong. You may have periods of unusual behaviors, feelings and sometimes loss of awareness.

2022年12月31日 · The mainstay of diagnosis, therefore, remains detection of interictal (ie, between seizures, from the Latin icere, to strike) epileptiform discharges. Epileptiform discharges simply are...

Epileptiform discharges are transient waveforms lasting for several tens to hundreds of milliseconds and are mainly divided into seven types. It is important to develop systematic approaches to accurately distinguish these waveforms from normal control ones.

Epileptiform activity indicates a predisposition to produce seizures that either may be latent or expressed as a clinical seizure. Slowing and decreased amplitude of the electrical activity indicate brain dysfunction.

Electroencephalography (EEG) is the most useful test for assessment of patients with epilepsy. It can help establish the diagnosis of epilepsy and determine the type of seizure disorder and its site of origin. Epi leptiform abnormalities in the EEG tracing may be focal or generalized.

2025年1月31日 · Continuous epileptiform discharges must average at >2.5 Hz, and evolution refers to any definite sequential change in ≥2 of the morphology, frequency or field of the EEG pattern. In this situation, the definition of an ‘epileptiform discharge’ is broad and includes any sharply contoured rhythmic waveform.11

2025年1月27日 · Epileptiform normal variants are electroencephalographic (EEG) patterns that resemble epileptogenic abnormalities. Most of these patterns initially were thought to be associated with...

3 天之前 · For instance, patients with AD present with epileptiform activity 108, 109 like patients with epilepsy, they also share rhythmopathies of gamma and ripple oscillations, as demonstrated in animal models. 46, 79, 110-114 The presence of epileptiform activity and rhythmopathies on EEG has been associated with impaired cognition in both patients ...