Can you tell health from disease?
Pathology can affect physiologic recordings in unexpected and interesting ways. PhysioNet encourages researchers to find new ways to extract information hidden in data.
For example, the figure to the right shows the instantaneous heart rates of four subjects. But only one signal is from a healthy person. Can you tell which it is?
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Multiparameter Sleep Apnea Records
This one-minute excerpt of an eight-hour multichannel record of a patient with obstructive sleep apnea shows complex coupling of cardiopulmonary and electroencephalographic (EEG) dynamics. The shaded lines below the time axis indicate prolonged sleep apnea episodes, characterized by periodic cessation of breathing. BP indicates blood pressure; Resp, respiration; and SaO2, arterial oxygen saturation.
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Gait Dynamics in Neuro-Degenerative Diseases
Neuro-degenerative disease often affects gait and mobility. To understand better the pathophysiology of these diseases and to improve our ability to measure responses to therapeutic interventions, it may be helpful to quantify properties gait dynamics. The data shown here are interstride intervals obtained using force-sensitive resistors, with the output roughly proportional to the force under the foot.Interstride Interval Recordings
for Several Diseases
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