(www.neurotraces.com)
The character
then means
great and broad
( Cheng Chung Hing )
EDF+
EDF (European Data Format) is a format designed for interchanging neurophysiological data. A Danish, Portuguese, Finnish and Dutch engineer wanted to compare each others sleep analysis algorithms, so they needed a common format to exchange sleep recordings. As far as I know, an important reunion took place in Leiden (the Dutch city where Einthoven taught Physiology). The result was an open format widely used in Clinical Neurophysiology. You can find much more information at Bob Kemp's site
EDF+ tries to use the same principles to archival and exchange ENG,
EMG, EP, ECG, EEG and PSG data. You will find the normative document of
EDF+ at Bob Kemp's site.
This section of Neurotraces
was
designed to increase the knowledge of EDF+ and at present includes
(Physionet style):
EDFNET: Tutorials on EDF
- A tutorial containing a gentle (?) introduction to the format titled "Some introductory notes to EDF"
- A tutorial on how to create an EDF+ file from scratch: "Coding a sin wave in EDF+ by using Java"
EDFBANK: An archive of neurophysiological recordings
- A set of EDF+ files (several examples) and its description: "Some EDF+ files"
- A database
comprising 250 EDF+ files (Nerve Conduction Studies
of Median, Ulnar and Radial nerve)
- A database
of EDF+
files (EMG signals in Tibialis Anterior)
EDFTOOLKIT: Some tools for EDF(+) processing
- Some programs
to handle EDF(+) files. You can download
the sources (for Linux/Windows OS) as well as the Windows binaries at
the download page download page
- edfEdit (to edit the header of EDF files): A tutorial
about its use.
- edfAnn (to edit the annotations of EDF+ files): A tutorial about its use.
- edfAsc (to import/export EDF files from/to ASCII files): A tutorial about its use.
One of the differences between EDF+ and EDF is that EDF+ can contain discontinuous recordings. To gain some insight of the differences between continuous and discontinuous recordings you can check the interesting applets included at Horace Townsend's site, especially those of a continuous recording (en EEG recording with several montages and markers) and a discontinuous one (an EP recording).
Since Neurotraces tries to encourage you to use Linux, these are links of EDF/EDF+ viewers on Linux ...
.. you can find more information about other formats used in
Clinical Neurophysiology HERE, and ...
... you will find more information on Clinical Neurophysiology in our Home page.