PROBLEM TO BE SOLVED: To provide an estimation device, an estimation system, an estimation method and a program, by which the occurrence or non-occurrence of jet lag can be objectively determined and the extent of jet lag symptoms can be quantitatively evaluated.SOLUTION: The estimation device includes: an acquisition unit 27 for acquiring estimation criteria, the estimation criteria being set by, relative to a plurality of specimens having different extents of jet lag symptoms, dividing the feature values of physiological indexes in the deep body temperature system and the feature values of physiological indexes in the active mass system individually depending on the extents of jet lag symptoms, and then specifying the feature value ranges depending on the extents of jet lag symptoms thus divided an extraction unit 23 for extracting the feature value of the physiological index in the deep body temperature system and the feature value of the physiological indexes in the active mass system of a subject Su and a symptom estimation unit 25 for determining the feature value ranges of the estimation criteria, within which the feature value of the physiological index in the deep body temperature system and the feature value of the physiological index in the active mass system of the subject respectively fall, and thus estimating the extent of jet lag symptoms of the subject.COPYRIGHT: (C)2012,JPO&INPIT【課題】時差ぼけの有無を客観的に判定するとともに、時差ぼけ症状の程度を定量的に評価できる、時差ぼけ症状の推定装置、推定システム、推定方法およびプログラムを提供する。【解決手段】時差ぼけ症状の程度を異にする複数の標本について、深部体温系の生理指標の特徴量と活動量系の生理指標の特徴量のそれぞれを、時差ぼけ症状の程度に応じて区分し、時差ぼけ症状の程度の区分に応じた特徴量範囲を特定して設定される推定基準を取得する取得部27と、被験者Suについて、深部体温系の生理指標の特徴量と活動量系の生理指標の特徴量を抽出する抽出部23と、深部体温系の生理指標と活動量系の生理指標のそれぞれについて、被験者の生理指標の特徴量が推定基準のいずれの特徴量範囲に含まれるかを判定し、被験者の時差ぼけ症状を推定する症状推定部25とを備える。【選択図】図5
