REFERENCES
- Akselrod S., Gordon D., Ubel F. A., Shannon D. C., Berger A. C., Cohen R. J. Power Spectrum Analysis of Heart Rate Fluctuation: A Quantitative Probe of Beat-to-beat Cardiovascular Control. Science 1981; 213: 220–222
- Madwed J. B., Albrecht P., Mark R. G., Cohen R. J. Low Frequency Oscillations in Arterial Pressure and Heart Rate: A Simple Computer Model. Am. J. Physiol. 1989; 256: H1573–H1579
- Task Force of the European Society of Cardiology and the North American Society of Pacing and Electrophysiology. Heart Rate Variability: Standards of Measurements, Physiological Interpretation, and Clinical Use. Circulation 1996; 93: 1043–1065
- Bigger J. T., Jr., Fleiss J. L., Steinman R. C., Rolnitzky L. M., Kleiger R. E., Rottman J. N. Frequency Domain Measures of Heart Period Variability and Mortality after Myocardial Infarction. Circulation 1992; 85: 164–171
- Kleiger R. E., Miller J. P., Bigger J. T., Jr., Moss A. J. Decreased Heart Rate Variability and its Association with Increased Mortality after Acute Myocardial Infarction. Am. J. Cardiol. 1987; 59: 256–262
- Shannon D. C., Carley D. W., Benson H. Aging of Modulation of Heart Rate. Am. J. Physiol. 1987; 22: H824–H877
- Schwartz J. B., Gibb W. J., Tran T. Aging Effects on Heart Rate Variation. J. Gerontol. 1991; 46: M99–M106
- Tsuji H., Veneditti F. J., Manders E. S., Evans J. C., Larson M. G., Feldman C. L., Levy D. Reduced Heart Rate Variability and Mortality Risk in an Elderly Cohort. The Framingham Heart Study. Circulation 1994; 90: 878–883
- Lawton M. P., Brody E. M. Assessment of Older People: Self-maintaining and Instrumental Activities of Daily Living. Gerontologist 1969; 9: 179–186
- Hughes C. P., Berg L., Danziger W. L., Cohen L. A., Martin R. L. A New Clinical Scale for the Staging of Dementia. Br. J. Psychiat. 1982; 140: 566–572
- Tanaka Y. MemCalc System User's Manual. Suwa-Trust, Sapporo 1996, (in Japanese)
- Akaike H. Information Theory and an Extension of the Maximum Principle. Proc. 2nd Inter. Symp. on Information Theory. Academia Kiando, Budapest 1973; 267–281
- Shimizu K., Hirose N., Yonemoto T., Wakida Y. Circadian Heart Rate Rhythms in Japanese Centenarians. J. Am. Geriatr. Soc. 1999; 47: 1094–1099
- Matsubayashi K., Okumiya K., Osaki Y., Fujisawa M., Doi Y. Frailty in Elderly Japanese. Lancet 1999; 353: 1445
- Ohki K. Brain. Kobunsha, Tokyo 1993, (in Japanese)