PROBLEM TO BE SOLVED: To provide an apparatus capable of evaluating the quality of sleep of an infant by quantitatively measuring the ratios of respective sleep stages of active sleep, quiet sleep and indeterminate sleep of the infant.SOLUTION: The sleep quality evaluation apparatus is composed of: a biological vibration detecting means for detecting biological vibration of the infant a biological signal detecting means for detecting a biological signal from an output signal of the biological vibration detecting means a biological signal intensity dispersion value computing means for computing the dispersion value for a prescribed time of the intensity of the biological signal acquired by the biological signal detecting means a sleep stage determining means for determining the sleep stage of the infant from the dispersion value of the intensity of the biological signal acquired by the biological signal intensity dispersion value computing means and a sleep evaluation means for determining the quality of sleep of the infant from the sleep stage of the infant acquired by the sleep stage determining means. The quality of sleep of the infant is evaluated by determining the quiet sleep, active sleep and indeterminate sleep.COPYRIGHT: (C)2011,JPO&INPIT【課題】乳幼児の動睡眠・静睡眠・不定睡眠の各睡眠段階の割合を定量的に測定することにより睡眠の質を評価できる装置を提供する。【解決手段】乳幼児の生体振動を検出する生体振動検出手段と、前記生体振動検出手段の出力信号から生体信号を検出する生体信号検出手段と、前記生体信号検出手段により得られた生体信号の強度の所定時間の分散値を求める生体信号強度分散値算出手段と、前記生体信号強度分散値算出手段で得られた生体信号強度の分散値から乳幼児の睡眠段階を判定する睡眠段階判定手段と前記睡眠段階判定手段で得られた乳幼児の睡眠段階から乳幼児の睡眠の質を判定する睡眠評価手段とから成ることを特徴とする。乳幼児の睡眠の質とは、静睡眠・動睡眠・不定睡眠を判定することを特徴とする。【選択図】図1
