Seizure

Intraoperative electrocorticography (ECoG) is widely used during epilepsy surgery. The removal of areas showing interictal epileptiform discharges, especially spikes, recorded in the preresection ECoG is associated with increased freedom from seizures [1,2]. However, there are still debates about the usefulness of intraoperative spikes for delineating epileptogenic areas [2–5]. One reason for this controversy is that intraoperative epileptic activity is strongly affected by the types and concentrations of anesthesia [6].

The publisher regrets that a correction to the first sentence of the Materials and methods section of this article was missed during proofing. The corrected sentence should read:

Drug-resistant epilepsy (DRE) leads to a debilitating life with gross impact on quality of life [1]. Recurrent seizures are known to cause permanent and progressive changes in brain structure and function, leading to impaired brain development and a loss in cognitive functioning [2–4]. Cognitive development may slow or cease after the onset of seizures [2,3,5–8].

Since the 19th century, the relation between headaches and epilepsy has been studied.1,2 Despite that, according to the Global Burden of Disease Study headache disorders are the third cause of disability worldwide.3

Neurological manifestations of COVID-19 infection include impaired consciousness, strokes, and seizures. Limited reports describing EEG abnormalities in patients with COVID-19 have been published. These articles reported nonspecific encephalopathic patterns, epileptiform discharges, and rarely seizures. Our primary aim was to assess EEG abnormalities in patients with COVID-19 and evaluate for epileptiform activity or seizures.