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
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
- 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
- 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
- Santa Fe Time Series Competition Data Set B
(data extracted from the (class 3) MIT-BIH
- 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