PROBLEM TO BE SOLVED: To remove noise in response to movement of the head of a test object, from a measurement result obtained by measuring a blood flow of the test object by optical measurement using near infrared light.SOLUTION: A blood flow noise removing device 1 includes: a blood flow change calculation unit that calculates blood flow change information relating to a blood flow change of a test object ST according to angles on the basis of angle information representing angles with inclination of the test object and blood flow information obtained by measuring the blood flow of the test object by optical measurement using near infrared light a filter unit that removes noise caused by the angles contained in the blood flow information from the blood flow information on the basis of the blood flow change information calculated by the blood flow change calculation unit and the blood flow information and an output unit for outputting the post-noise-removal information obtained by removing the noise from the blood flow information by the filter unit.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】近赤外線を用いた光学測定によって被検体の血流を測定した測定結果から当該被検体の頭の動きに応じたノイズを除去する。【解決手段】血流ノイズ除去装置1は、被検体STの傾きに伴う角度を示す角度情報と、近赤外線を用いた光学測定によって被検体の血流を測定した血流情報とに基づいて、角度に応じた被検体の血流変化に関する血流変化情報を算出する血流変化算出部と、血流変化算出部が算出した血流変化情報と、血流情報とに基づいて、血流情報に含まれる角度に伴うノイズを血流情報から除去するフィルタ部と、フィルタ部によって血流情報からノイズが除去されたノイズ除去後情報を出力する出力部と、を備える。【選択図】図1
