@article{oai:muroran-it.repo.nii.ac.jp:00008309,
 author = {HOCHEL, Joachim and ヘーヒェル, ヨアヒム and MOHR, Elmar and モール, エルマー and NICHELMANN, Martin and ニッケルマン, マーチン and PIROW, Ralph and ピロウ, ラルフ and TAZAWA, Hiroshi and 田澤, 皓},
 journal = {室蘭工業大学紀要, Memoirs of the Muroran Institute of Technology},
 month = {Nov},
 note = {application/pdf, The heart rate(HR) of Muscovy duck embryos (Cairina moschata f. domestica) was continuously recorded from as early as the 21st day of incubation (D21) until hatching (D34/35). The aim of the study was to investigate the influence of phonoperiods consisting of different acoustic stimuli on the course of HR and the development of HR periodicities during this period. Incubation was carried out at a constant temperature and in constant darkness. Until D25 HR was dominated by decelerative fluctuations only, indicating a main input from the parasympathetic system on the heart. Later sympathetic influences increased progressively. HR periodicity was investigated by means of x2-periodogram and fast Fourier transformation. Between D26 and D30 statistically significant and stable HR periodicities developed gradually. They had periods in the range from 5 to 38 hours. Ultra-, circa- and infradian rhythms (<20h, 24.+-.4h and >28h, respectively) occurred in parallel in some cases in the same embryo. During these important periods HR courses were dissimilar between individual embryos and had different intensities. There was no indication that acoustic stimulation (phonoperiods) had any effect on the development of HR periodicities., 特集 : 「動物の心拍リズム」国際シンポジウム発表論文選集},
 pages = {19--29},
 title = {Development of Heart Rate Rhythmicity in Muscovy Duck Embryos},
 volume = {49},
 year = {1999},
 yomi = {タザワ, ヒロシ}
}