Trudności w interpretacji zapisów elektroencefalograficznych — artefakty

Evaluation of electroencephalography (EEG) studies is performed by visual analysis — the following elements are assessed: frequency, amplitude, shape, spatial distribution of waves, symmetry and synchrony of waves. Artifacts are generated outside the brain and are divided into physiological and non-physiological. The maturation of the brain’s bioelectrical activity may be disturbed by various endogenous and exogenous factors. Electroencephalography over interpretation is a contributing factor to misdiagnosis of epilepsy and other seizure conditions. Recognizing and distinguishing artifacts and normal variants from abnormal patterns is a key element of recording evaluation.