Waking degree maintaining apparatus
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United States of America Patent
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May 17, 1994
Grant Date -
N/A
app pub date -
Sep 30, 1992
filing date -
Oct 2, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A waking degree maintaining apparatus of this invention estimates a waking degree of a person on the basis of a correlation between brain waves and the reaction time or between the blinking frequency and the reaction time, and discriminates a drop in waking degree on the basis of the obtained waking degree. A stimulus according to the waking degree is presented to maintain the person in a waking state of a predetermined level. The waking degree of a person is recovered to a normal state, not only in a low waking degree state, but also in an over-stained state.
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