Table 2 Time features and their description.
Feature | Description | Interpretation |
|---|---|---|
Mean | The average value of the EEG signal over a time segment. It shows the overall level of brain activity. | Higher mean values recommend sharp brain activity, like during tasks or arousal. Lower mean values specify relaxed states, such as deep sleep or rest. |
Variance | Measures how much the EEG signal varies around the mean. It designates the variability of brain activity. | High variance replicates irregular signals, seen in active cognitive states or neurological events. Low variance recommends stable, calm brain states or absence of stimulation. |
Peak amplitude | The maximum absolute value of the EEG signal in the segment, representing the intensity of neural events. | High peak amplitude could specify brain events like seizures or pathological phenomena. Low peak amplitude is characteristic in resting states or low cognitive/sensory demand. |
