著者

原 修一 河野 靖美 松田 沙織 内勢 美絵子 柏田 圭一 ハラ シュウイチ カワノ ヤスミ マツダ サオリ ウチセ ミエコ カシワダ ケイイチ Shuichi HARA Yasumi KAWANO Saori MATSUDA Mieko UCHISE Keiichi KASHIWADA

雑誌

九州保健福祉大学研究紀要 = Journal of Kyushu University of Health and Welfare

巻号頁・発行日

vol.17, pp.89-96, 2016-03

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Aim: We conducted two studies to elucidate the relationship between heartbeat rhythms and relaxation among Japanese babies, young children, and their parents.Subjects and Methods: STUDY 1: Seven parents (age M = 34.3, SD = 5.5 years) with infants or toddlers (age M = 9.4, SD = 6.7 months) participated by listening to three conditions—a heartbeat sound, music, or music with a heartbeat sound—while completing a semantic differential exercise assessing musical imagery. Three types of music (classical, music box, and children’ s songs) were used. Image scores were compared among the three conditions in each type of music. STUDY 2: Participants included 161 parents who listened to three pieces of music, each with a different heartbeat rhythm (patterns A, B, and C). The parents reported their baby or child’ s responses to the music and also self-reported feelings they experienced. Finally, the parents indicated the piece of music they most preferred and related images using the SD exercise. To perform our analyses, we also assessed acoustic characteristics of the three heartbeat sounds.Results: STUDY 1: In the music arranged for a music box, participants evaluated musical imagery as significantly more “airy,” “comfortable,” “feels good,” “relaxing,” “easy,” “awake,” and “amusing” when listening to music with a heartbeat sound, in comparison to the other two conditions (p < .05). STUDY 2: “Rocking the body” and “heard quietly and slept” were the infants’ and toddlers’ responses to the music with a heartbeat sound. Fifty-six parents (34.8%) preferred “pattern A” music, 47 (29.2%) preferred “pattern B,” and 10 (6.3%) preferred “pattern C.” In analysis of “pattern A” acoustics, the mean number of heartbeats per minute, mean heartbeat frequency, maximum heartbeat frequency, and heartbeat Pitch Period Perturbation Quotient (PPQ) were 58/min, 120.3 ± 32.8 Hz, 248.4 Hz, and 11.39%, respectively.Conclusion: This research suggests that a heartbeat sound effective for relaxation has a rhythm of 60 beats/min, low-frequency bandwidth (120–220 Hz), and low percentage of PPQ. Our studies also indicate that music arranged for a music box with a heartbeat sound might be beneficial for inducing relaxation.

著者

中司 弘樹 河野 靖美 松田 沙織 夏目 季代久

出版者

一般社団法人電子情報通信学会

雑誌

電子情報通信学会技術研究報告. NC, ニューロコンピューティング (ISSN:09135685)

巻号頁・発行日

vol.114, no.437, pp.39-45, 2015-01-22

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本研究は心音の脳波に対する影響を調べた.実験は、被験者白身の心音、彼らの母親の心音、他人の心音、雑音をランダムに提示し、その音源を聴取している時の脳波を測定した.またそれぞれの音源聴取後、アンケートを取り、その音源が、どれくらい心地良いか、眠気を誘導するか評価して貰った.測定した脳波との比較に用いた,脳波は、各音源聴取期間後半で高速フーリエ変換を行い、δ、θ、α、β、γの周波数帯域毎に平均周波数スペクトルパワー値及び各脳波測定電極間でコヒーレンスを計算した.その結果、パワー値に関しては脳波θ波が主に眠さ得点と相関がある事が明らかになった.一方、心音聴取時、聴覚野部位を含む脳波電極間のコヒーレンス変化が生じる事、その空間パターンは心音音源により異なる事が明らかになった.以上の結果は、私達は心音を区別出来、誘導する脳内情報処理が異なる事を示唆している.

著者

原 修一 河野 靖美 松田 沙織 内勢 美絵子 柏田 圭一 ハラ シュウイチ カワノ ヤスミ マツダ サオリ ウチセ ミエコ カシワダ ケイイチ Shuichi HARA Yasumi KAWANO Saori MATSUDA Mieko UCHISE Keiichi KASHIWADA

出版者

九州保健福祉大学

雑誌

九州保健福祉大学研究紀要 (ISSN:13455451)

巻号頁・発行日

no.17, pp.89-96, 2016-03

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Aim: We conducted two studies to elucidate the relationship between heartbeat rhythms and relaxation among Japanese babies, young children, and their parents.Subjects and Methods: STUDY 1: Seven parents (age M = 34.3, SD = 5.5 years) with infants or toddlers (age M = 9.4, SD = 6.7 months) participated by listening to three conditions—a heartbeat sound, music, or music with a heartbeat sound—while completing a semantic differential exercise assessing musical imagery. Three types of music (classical, music box, and children' s songs) were used. Image scores were compared among the three conditions in each type of music. STUDY 2: Participants included 161 parents who listened to three pieces of music, each with a different heartbeat rhythm (patterns A, B, and C). The parents reported their baby or child' s responses to the music and also self-reported feelings they experienced. Finally, the parents indicated the piece of music they most preferred and related images using the SD exercise. To perform our analyses, we also assessed acoustic characteristics of the three heartbeat sounds.Results: STUDY 1: In the music arranged for a music box, participants evaluated musical imagery as significantly more "airy," "comfortable," "feels good," "relaxing," "easy," "awake," and "amusing" when listening to music with a heartbeat sound, in comparison to the other two conditions (p < .05). STUDY 2: "Rocking the body" and "heard quietly and slept" were the infants' and toddlers' responses to the music with a heartbeat sound. Fifty-six parents (34.8%) preferred "pattern A" music, 47 (29.2%) preferred "pattern B," and 10 (6.3%) preferred "pattern C." In analysis of "pattern A" acoustics, the mean number of heartbeats per minute, mean heartbeat frequency, maximum heartbeat frequency, and heartbeat Pitch Period Perturbation Quotient (PPQ) were 58/min, 120.3 ± 32.8 Hz, 248.4 Hz, and 11.39%, respectively.Conclusion: This research suggests that a heartbeat sound effective for relaxation has a rhythm of 60 beats/min, low-frequency bandwidth (120–220 Hz), and low percentage of PPQ. Our studies also indicate that music arranged for a music box with a heartbeat sound might be beneficial for inducing relaxation.