Resources


Challenge Open Access

Is the normal heart rate chaotic?

George Moody

In its June 2008 issue, the editors of Chaos announced a new feature, "Controversial Topics in Nonlinear Dynamics". The first controversial topic to be aired is "Is the Normal Heart Rate Chaotic?". This project provides data to explore this question.

Published: Oct. 30, 2008. Version: 1.0.0


Challenge Open Access

The First Five Challenges Revisited: The PhysioNet/Computing in Cardiology Challenge 2005

Our popular series of challenges presented in cooperation with Computers in Cardiology continues this year in a new mode. Participants are invited to choose one of the five previous challenges as a topic for a follow-up study:

  • Detecting sleep apn…

challenge

Published: May 2, 2005. Version: 1.0.0


Software Open Access

Detrended Fluctuation Analysis

The method of detrended fluctuation analysis has proven useful in revealing the extent of long-range correlations in time series.

complexity

Published: Nov. 11, 2001. Version: 1.0.0


Database Open Access

Gait Maturation Database

The data contained here are from 50 healthy children ranging in age from 40 months to 163 months. Each data file is named with a subject identifier (1-50) and the subject's age (e.g., the file name 2-45.txt indicates that subject #2 is 45 months…

gait

Published: Oct. 28, 1999. Version: 1.0.0