Apparatus, method and system of measuring sleep state

Details Apparatus, method and system of measuring sleep state Apparatus, method and system of measuring sleep state

2006-09-18

2011-12-13

Patel, Niketa (Department: 3762)

Surgery

Diagnostic testing

Cardiovascular

C600S509000, C600S515000

Reexamination Certificate

active

08078269

ABSTRACT:
A sleep state measuring apparatus includes an autonomic nerve index obtaining unit that obtains a user's autonomic nerve index; and a sleep periodicity index calculating unit that calculates a sleep periodicity index based on a temporal change of the autonomic nerve index and a change in a user's sleeping cycle, wherein the sleep periodicity index indicates whether the user is sleeping or not according to a user's ideal sleeping cycle as an index, or a dominance index calculating unit that calculates a parasympathetic nerve dominance index which shows dominance of a parasympathetic nerve index included in the autonomic nerve index with respect to a sympathetic nerve index included in the autonomic nerve index for a user during sleep.

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