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.