| 摘要 |
The invention relates to a method for supervising the level of alertness of a person, especially a vehicle driver, and indication of a non-permitted increase or decrease of the level of alertness in order to generate a warning signal at such an indication. This is performed by registering an (EEG), which is continuously frequency analyzed. At simultaneous deviation in opposite directions from the normal awake state values within the frequency ranges 3-8 Hz and 9-12 Hz an alarm is arranged to be released. |
