mne.datasets.sleep_physionet.age.fetch_data(subjects, recording=[1, 2], path=None, force_update=False, update_path=None, base_url='', on_missing='raise', verbose=None)[source]

Get paths to local copies of PhysioNet Polysomnography dataset files.

This will fetch data from the publicly available subjects from PhysioNet’s study of age effects on sleep in healthy subjects [R008cc7a4bd91-1]_[R008cc7a4bd91-2]_. This corresponds to a subset of 153 recordings from 37 males and 41 females that were 25-101 years old at the time of the recordings. There are two night recordings per subject except for subjects 13, 36 and 52 which have one record missing each due to missing recording hardware.

See more details in physionet website.

subjectslist of int

The subjects to use. Can be in the range of 0-82 (inclusive), however the following subjects are not available: 39, 68, 69, 78 and 79.

recordinglist of int

The night recording indices. Valid values are : [1], [2], or [1, 2]. The following recordings are not available: recording 1 for subject 36 and 52, and recording 2 for subject 13.

pathNone | str

Location of where to look for the PhysioNet data storing location. If None, the environment variable or config parameter MNE_DATASETS_PHYSIONET_SLEEP_PATH is used. If it doesn’t exist, the “~/mne_data” directory is used. If the Polysomnography dataset is not found under the given path, the data will be automatically downloaded to the specified folder.


Force update of the dataset even if a local copy exists.

update_pathbool | None

If True, set the MNE_DATASETS_EEGBCI_PATH in mne-python config to the given path. If None, the user is prompted.

on_missing‘raise’ | ‘warn’ | ‘ignore’

What to do if one or several recordings are not available. Valid keys are ‘raise’ | ‘warn’ | ‘ignore’. Default is ‘error’. If on_missing is ‘warn’ it will proceed but warn, if ‘ignore’ it will proceed silently.

verbosebool, str, int, or None

If not None, override default verbose level (see mne.verbose() and Logging documentation for more). If used, it should be passed as a keyword-argument only.


List of local data paths of the given type.


For example, one could do:

>>> from mne.datasets import sleep_physionet
>>> sleep_physionet.age.fetch_data(subjects=[0])  

This would download data for subject 0 if it isn’t there already.



MS Mourtazaev, B Kemp, AH Zwinderman, HAC Kamphuisen. Age and gender affect different characteristics of slow waves in the sleep EEG. Sleep 18(7):557–564 (1995).


Goldberger AL, Amaral LAN, Glass L, Hausdorff JM, Ivanov PCh, Mark RG, Mietus JE, Moody GB, Peng C-K, Stanley HE. (2000) PhysioBank, PhysioToolkit, and PhysioNet: Components of a New Research Resource for Complex Physiologic Signals. Circulation 101(23):e215-e220

Examples using mne.datasets.sleep_physionet.age.fetch_data