edfhed(1)                          Aghermann                         edfhed(1)

            edfhed -- EDF header dumper/editor.

            edfhed [OPTIONS] FILE.edf ...

       edfhed is a terminal program to view the header of EDF files (with
       option -b, or without any options), or modify fields in the header (see
       options -s, -T and -R).

       -b, --no-channels
              Only dump general header fields (no channel details).

       -a, --with-annotations
              List embedded annotations if any.

       -R, --from-tree
              Given file location ‘Subject/Session/Episode.edf’, set
              recording_id to ‘Session/Episode’ and patient_id to ‘Subject’.

       -T, --from-mtime
              Set recording_date and recording_time fields to file
              modification date/time.

       -t, --touch-mtime
              Set file mtime to timestamp assembled from recording_date and
              recording_time fields (assuming local timezone).

       -s, --set=[CH:]FIELD:VALUE
              Set FIELD to VALUE (in channel CH if specified, as a 1-based
              integer index).

              Possible general fields are: version_number, patient_id,
              recording_id, recording_date, recording_time, reserved (remember
              that the contents of this field is significant wrt EDF/EDF+

              The version_number field must match the string "0      " for the
              file to be recognised as a valid EDF by edfhed.

              Channel fields: label, transducer_type, physical_dim,
              physical_min, physical_max, digital_min, digital_max,
              filtering_info, reserved.

              Direct field assignment done via --set option(s) will override
              any assignments effected by options -T or -R.

       -?, --help
              Give a brief options summary.

              Display usage information.

       -V, --version
              Display version.

       For Aghermann to be able to manage an EDF file, all relevant fields in
       its header must be filled out correctly, as follows:

       ·      patient_id uniquely identifies the subject;

       ·      recording_id identifies the recording session (out of several
              other such sessions, each containing the same series of
              episodes) and the individual episode.  These two items must
              appear in one of the following combinations:

           ·      "Session/Episode"

           ·      "Session : Episode"

           ·      "Episode (Session)"

       ·      recording_date and recording_time must (obviously) be both

       ·      Channel labels must be a valid System 10-20 channel designation,
              i.e., "Nz", "Fp1", "Fpz", "Fp2", "AF7", "AF3", "AFz", "AF4",
              "AF8", "F9", "F7", "F5", "F3", "F1", "Fz", "F2", "F4", "F6",
              "F8", "F10", "FT9", "FT7", "FC5", "FC3", "FC1", "FCz", "FC2",
              "FC4", "FC6", "FCT8", "FT10", "A1", "T9", "T7", "C5", "C3",
              "C1", "Cz", "C2", "C4", "C6", "T8", "T10", "A2", "TP9", "TP7",
              "CP5", "CP3", "CP1", "CPz", "CP2", "CP4", "CP6", "TP8", "TP10",
              "P9", "P7", "P5", "P3", "P1", "Pz", "P2", "P4", "P6", "P8",
              "P10", "PO7", "PO3", "POz", "PO4", "PO8", "O1", "Oz", "O2",
              "Iz", plus a few channels of other signal types: "Left",
              "Right", "Chin",

              optionally prepended by signal type ("EEG", "EOG", "EMG", "ECG",
              "ERG", "NC", "MEG", "MCG", "EP", "Temp", "Resp", "SaO2",
              "Light", "Sound", "Event", "Freq") and a space.

       aghermann(1), edfhed-gtk(1), edfcat(1).

       edfhed is written by Andrei Zavada <johnhommer@gmail.com> as part of
       the Aghermann project.

1.0                               2013-12-03                         edfhed(1)