Author/Authors :
Plamen Ch. Ivanov، نويسنده , , M.G Rosenblum، نويسنده , , C.-K Peng، نويسنده , , J.E. Mietus، نويسنده , , S Havlin، نويسنده , , H.E Stanley، نويسنده , , A.L. Goldberger، نويسنده ,
Abstract :
We find that a universal homogeneous scaling form describes the distributions of cardiac variations for a group of healthy subjects, which is stable over a wide range of time scales. However, a similar scaling function does not exist for a group with a common cardiopulmonary instability associated with sleep apnea. Subtle differences in the distributions for the day- and night-phase dynamics for healthy subjects are detected.
