In the context of EEG, what would increasing the sensitivity to 10, 15uV/mm achieve?

Increasing the sensitivity of the EEG system to 10 or 15 µV/mm enhances the ability to detect and record smaller voltages in the brain's electrical activity. This higher sensitivity means that the EEG machine amplifies these signals more effectively, resulting in clearer and more detailed representations of brain waveforms.

When sensitivity is increased, the recorded brain activity appears more pronounced, allowing for the identification of subtle changes in neurological function. This is particularly important for analyzing low-amplitude activities, such as sleep spindles or small epileptiform discharges, providing clinicians with better insight into the patient's neurological function. Enhanced clarity of the waveforms is critical for accurate interpretation and diagnosis based on the EEG data.

While reducing noise interference and amplitude are relevant aspects of EEG recording, they do not directly correlate with adjusting the sensitivity in this manner. Similarly, the analysis duration is unrelated to the sensitivity adjustment; it deals with how long recordings are maintained or analyzed rather than how sensitively they are captured. In this context, therefore, increasing sensitivity specifically aims to provide a clearer representation of brain activity.