Epilepsy syndromes have different ages and types of onset, and the neurological manifestations of patients differ significantly from those of healthy individuals. In particular, patients with epilepsy have multiple abnormal features of EEG waveforms during seizures, which is an important tool for the diagnosis of epilepsy syndromes. In the following, we will give you detailed answers to the specific abnormalities of EEG waveforms in different epilepsy syndromes.
EEG features of tonic-clonic seizures
The EEG tonic phase starts with 10-20 Hz rhythmic spike waves, with gradually higher amplitude and slower frequency;
Diffuse slow wave activity is seen at the end of the seizure, with a gradual return to background activity #HealthScienceCompetition The EEG of a generalized gross myoclonic seizure shows high-amplitude multi-spike slow-wave bursts or suddenly presents with widespread low voltage.
Other seizure EEG features
The EEG of scattered wandering myoclonic seizures is persistent diffuse slow wave multifocal spikes and spikes.
The EEG during an atonic episode may show all-conductor spikes or multi-spike slow-wave emission; it may also show low- or high-amplitude fast activity and diffuse low voltage.
Most patients with benign #epilepsy with central-temporal spikes have normal background activity on the EEG, with spikes or spikes in the central or central temporal regions, followed by a low amplitude slow wave that may occur alone or in clusters.
Benign myoclonic epilepsy myoclonic seizures are accompanied by abnormal EEG discharges that manifest as diffuse spikes and slow waves or multiple spikes and slow waves.
EEG features of spasticity
It shows a high degree of dysrhythmia with complete disappearance of normal rhythm and abnormal waveforms such as irregular, disorganized, asymmetric, high amplitude slow waves, spikes, sharp waves, and multi-spike slow waves seen in each lead #very case#.
Seizures produce a specific EEG response, and EEG is significantly effective in the diagnosis of epilepsy and is a quick and reliable indicator of epilepsy. A clear diagnosis of epilepsy syndrome helps to select the appropriate antiepileptic drugs, thus facilitating the patient's recovery.