EEP - bti2riff

bti2riff - BTi MEG Import

Synopsis

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EEP 3.1  Max-Planck-Institute of Cognitive Neuroscience 1996-99
bti2riff 3.11   (SunOS 5.6 sun4m)             Thu Apr 22 16:12:37 1999
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  bti2riff <dest cnt> [options]

options:
  -f               convert REFERENCE channels
  -e               convert EXTERNAL channels
                   (MEG, EEG and TRIGGER channels are handled by default)
  -t <x0,x1...>    the "no trigger" value for each trigger channel
                   (default is 0)
  -P <pat>
  -S <scan>
  -s <sess>
  -r <run>
  -p <pdf>         BTi database selection
                   (default is to convert the first posted pdf)

Description

bti2riff converts a SHORT or FLOAT type processed data file from the BTi database to the compressed EEP format. The selection can be made via the BTi psel utility or via the bti2riff arguments.

For FLOAT data, the overall offset is removed channelwise and the resulting values are scaled back to SHORT using the original scaling factors. An error occurs if a value will not fit into a 16 bit signed after this.

The unit "T" is converted to "fT", "V" to "uV" and the scalings are changed accordingly to achieve more "handy" numbers.