PhysioBank Archives: Class 2

Class 2 databases are archival copies of data that support published research, contributed by authors or journals. These contributed databases offer the opportunity to gain additional insight into the experimental methods used in the associated studies, to confirm the original authors' published results, and to apply other analytic methods, either for comparison with the original authors' work or to reuse their data for different purposes. Follow the links from the PhysioNet Publications pages to read abstracts or full texts of these papers and to download the associated databases.

We maintain copies of the original data together with corrections submitted by the authors. We encourage users to report errors directly to the authors; if you do not receive a response from the authors after a reasonable time, please let us know.

The following class 2 databases are currently available:

• BIDMC Congestive Heart Failure Database. Long-term ECGs (about 20 hours each) from 15 subjects with severe CHF (NYHA class 3-4).
• CHB-MIT Scalp EEG Database. EEG recordings of 22 pediatric subjects with intractable seizures, monitored for up to several days following withdrawal of anti-seizure medication to characterize their seizures and assess their candidacy for surgical intervention. In all, the onsets and ends of 182 seizures are annotated.
• Congestive Heart Failure RR Interval Database. Beat annotation files (about 24 hours each, no ECGs) from 29 subjects with congestive heart failure (NYHA classes 1, 2, and 3).
• CAST RR Interval Sub-Study Database. Beat annotation files (about 24 hours each) from 809 subjects enrolled in the Cardiac Arrhythmia Suppression Trial (CAST), a landmark NHLBI-sponsored study. For 734 subjects, separate baseline (pre-treatment) and on-therapy records are available; the database consists of 1543 records in all, including roughly 150 million RR interval measurements.
• EEG Motor Movement/Imagery Dataset. One- and two-minute recordings of 109 volunteers performing a series of motor/imagery tasks. Each record contains 64 channels of EEG recorded using the BCI2000 system, and a set of task annotations.
• Effect of Deep Brain Stimulation on Parkinsonian Tremor (rest tremor velocity in the index finger of 16 subjects with Parkinson's disease, who receive chronic high frequency electrical deep brain stimulation)
• Evoked Auditory Responses in Normals across Stimulus Level. Evoked auditory response in 8 healthy subjects across a wide range of stimulus levels, including 24-bit recordings of auditory brainstem response (ABR) and otoacoustic emission (OAE) signals, and psychoacoustic loudness estimates.
• Exaggerated heart rate oscillations during two meditation techniques, with additional data from spontaneously and metronomically breathing controls, and from highly trained athletes. These data include times of beat occurrence only (the original ECGs are not currently available). A paper describing these data is available here.
• Gait Dynamics in Neuro-Degenerative Disease Database. A collection of 64 recordings of gait (including original foot signals) from 15 subjects with Parkinson's disease, 20 with Huntington's disease, 13 with amyotrophic lateral sclerosis, and 16 healthy controls.
• Gait in Aging and Disease Database (a "mini-collection" of data from healthy young and old volunteers, and patients with Parkinson's disease)
• Gait Maturation Database (a collection of data from healthy children ages 3-14)
• Gait in Parkinson's Disease. A collection of multichannel recordings from force sensors beneath the feet of 93 patients with Parkinson's Disease, and 73 healthy controls, collected from three studies.
• Noise Enhancement of Sensorimotor Function. Measurements of postural sway in 27 healthy volunteers (15 young, 12 elderly), with and without subsensory stimulation of the soles of the feet using mechanical noise.
• Normal Sinus Rhythm RR Interval Database. Beat annotation files (about 24 hours each, no ECGs) from 54 subjects in normal sinus rhythm.
• Post-Ictal Heart Rate Oscillations in Partial Epilepsy. Seven annotated single-lead ECG recordings, with times of seizures indicated. A study of these recordings is available here.
• QT Database. Over 100 fifteen-minute two-lead ECG recordings (many excerpted from other databases), with onset, peak, and end markers for P, QRS, T, and (where present) U waves of from 30 to 50 selected beats in each recording. A paper describing this database is available here.
• Santa Fe Time Series Competition Data Set B (data extracted from the (class 3) MIT-BIH Polysomnographic Database).
• Spontaneous Ventricular Tachyarrhythmia Database (Version 1.0 from Medtronic, Inc.). This database contains 135 pairs of RR interval time series, recorded by implanted cardioverter defibrillators in 78 subjects. Each series contains between 986 and 1022 RR intervals. One series of each pair includes a spontaneous episode of ventricular tachycardia (VT) or ventricular fibrillation (VF), and the other is a sample of the intrinsic (usually sinus) rhythm.
• Stress Recognition in Automobile Drivers. Recordings from healthy volunteers driving on a predefined route including streets and highways in and around Boston; signals recorded include ECG, EMG, galvanic skin resistance, and respiration.
• Surrogate Data with Correlations, Trends, and Nonstationarities. Surrogate stationary time series with varying degrees of correlations, trends of several types, and various types of nonstationarities.
• Term-Preterm EHG Database. Electrohysterogram (EHG: uterine EMG) recordings obtained at the University Medical Centre Ljubljana from 300 pregnant women, including 262 who had full-term pregnancies and 38 whose pregnancies ended prematurely, and including 162 recordings made before the 26th week of gestation and 138 made later.
• Time Course Data for Blood Pressure in Dahl SS and SSBN13 Rats. Two-minute continuous non-invasive blood pressure recordings from 9 SS (salt-sensitive) and 6 SSBN13 Dahl rats. Each rat was recorded twice, initially while on a low-salt diet and subsequently while on a high-salt diet, in support of a study of the physiologic origins of baroreflex dysfunction in salt-sensitive hypertension.
• Unconstrained and Metronomic Walking Database (a collection of long-term recordings of gait dynamics from 10 healthy young volunteers)