What is the typical duration of a sharp wave in EEG readings?

The typical duration of a sharp wave in EEG readings is indeed around 70-200 milliseconds. Sharp waves are characterized by their distinct morphology, which includes a sudden onset and a rapid rise, followed by a slower return to the baseline. This duration allows for the waveform to adequately reflect the underlying neuronal activity associated with epileptiform discharges or other pathologies, which is critical for accurate interpretation in clinical practice.

Understanding the characteristics of sharp waves in the context of EEG is essential for differentiating them from other types of waveforms, such as spikes or slow waves. This specific duration plays a significant role in identifying seizure activity and other neurological conditions, making it a crucial aspect of EEG analysis. Therefore, recognizing that sharp waves are within this duration range helps clinicians assess brain function effectively.