What does "Rise Time" refer to in the context of EEG signals?

"Rise Time" in the context of EEG signals specifically refers to the time it takes for a wave to reach 63% of its peak amplitude. This measurement is crucial in understanding the characteristics of EEG waveforms, particularly in terms of their rapidity or speed in transitioning from a lower amplitude to a higher amplitude. It provides insights into the dynamics of brain activity, which can be influenced by various physiological states such as sleep phases and arousal levels. Understanding rise time helps in assessing the responsiveness of the brain's electrical activity, making it a significant parameter in both clinical and research settings related to sleep studies and neurology.