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Matsushita Electric Industrial Co., Ltd.

Matsushita Electric Works, Ltd.

Hiroki Noguchi

Manabu Inoue

Tadashi Yano

Katsushige Amano

Yoshinori Tanabe

Wataru Iwai

Hiromitsu Kobayashi

Disclosed is a respiration leading system which can leads a living body to respire so that relaxation is effectively induced without any physiological load even if a respiration exercise feedback is not employed. This system comprises a control unit and a sense-stimulating unit. The control unit makes the sense-stimulating unit change the output energy for stimulating a sense of the living body so that the living body is induced to inhale and exhale as a physiological reaction. The energy change is done within the range of a respiration period x(sec) and a parameter y defined as 2 sec&#x3c;x&#x3c;12 sec and 0.85&#x3c;y&#x3c;1.45 (a region x&#x2266;4 sec and y&#x2267;1.3 is excluded). The parameter y is a ratio of exhaling time to inhaling time. The energy output in the first half period corresponding to either inhaling or exhaling and the energy output in the latter half corresponding to the other, induce the living body to respire.

Respiration leading system

In a lighting system capable of varying luminance of the light emitting surface periodically used for adjusting rhythm of breathing of an observer when he wishes to fall asleep, a light source is controlled in a manner so that variation of the luminance &ldquo;L&rdquo; per a unit time in the vicinity at a time t when the luminance &ldquo;L&rdquo; takes the largest value in one period becomes larger than the variation of the luminance &ldquo;L&rdquo; per the unit time in the vicinity at a time t when the luminance &ldquo;L&rdquo; takes the smallest value.

Lighting system

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Burlington, MA, United States of America

Hiroki Noguchi