NAME

            edfhed -- EDF header dumper/editor.

SYNOPSIS

            edfhed [OPTIONS] FILE.edf ...

DESCRIPTION

       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+ distinction).

              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.

       --usage
              Display usage information.

       -V, --version
              Display version.

USE WITH AGHERMANN

       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 correct.

       •      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.

SEE ALSO

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

AUTHOR

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