There are four main frequencies of the human brain seen on scalp EEG, in increasing order: delta, theta, alpha and beta. Delta is the slowest at 0-4 Hz, and generally speaking should not be present in a …

Aug 3, 2025 · Differentiating normal waveforms from abnormal patterns is essential for EEG to achieve high specificity and diagnostic value. EEG waveforms can be characterized by location, amplitude, …

Aug 4, 2025 · Normal EEG results show organized wave patterns appropriate to your age and state (awake or asleep). Common features include alpha waves in the back of the brain when your eyes …

For the EEG to have a high diagnostic value and high specificity, it is critical to recognize waveforms that can be mistaken for abnormal patterns. This article describes artifacts, normal rhythms, and normal …

Nov 29, 2025 · A conceptual framework for reading EEG results. Learn to interpret brain wave patterns, from basic frequencies to diagnostic applications.

The EEG reader is often asked to prognosticate, but any approach to prognostication after cardiac arrest should be multimodal including parameters from clinical examination, electrophysiology, biomarkers, …

Oct 9, 2019 · Most waves of 8 Hz and higher frequencies are normal findings in the EEG of an awake adult. Waves with a frequency of 7 Hz or less often are classified as abnormal in awake adults, …

A healthy human EEG will show certain patterns of activity that correlate with how awake a person is. The range of frequencies one observes are between 1 and 30 Hz, and amplitudes will vary between …

EEG Normal Waveforms refer to the typical patterns of electrical activity recorded from the brain during an electroencephalogram (EEG), used to diagnose neurological conditions.

What Can the EEG Show? The EEG shows patterns of normal or abnormal brain electrical activity. Some abnormal patterns happen with a variety of conditions, not just seizures. For example, head …