digitize-info(5) manual page
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digitize-info - digitization parameters file
The digitize-info
file is used to describe the digitization parameters necessary for the
digitize (1)
program. The free format ASCII file contains keywords and
values that are used to describe various aspects of the EEG digitization
process. The file supports the following keywords:
- srate Hz
- The srate
keyword takes a single parameter which is the sample rate in Hz to be used
during EEG data acquisition.
- speriod usecs
- The speriod keyword takes a single
parameter which is the sample period in microseconds to be used during
EEG data acquisition.
- format file_format
- The format keyword takes a single
parameter which is the file format used to save the EEG and event code
data. Currently only erpss is supported.
- gain value
- The gain keyword takes
a single parameter which is the programmable instrumentation amplifier
analog gain to be applied to the channel signals before they are digitized.
- scan { channel description ... }
- The scan keyword takes an array of channel,
description pairs. Each pair corresponds to an entry in the channel scan
list. Channels are scanned in the order they are listed in this array. Each
channel number (starting from 1) is accompanied by a description string
(delimited by double quotes). This description string should be short as
it is displayed on the digitize display during data collection.
- experiment
value
- This keyword is used to describe the experiment, value is delimited
by double quotes.
- experimenter value
- This keyword is used to describe the
experimenter, value is delimited by double quotes.
- subject value
- This keyword
is used to describe the subject, value is delimited by double quotes.
#
# sample info file for digitize.
#
# newlines, spaces and tabs are ignored...
#
#
# sample period in microseconds
#
# usage: srate hertz
# speriod usecs
#
srate 512
#speriod 8000
#
# file format
#
# usage:
# format erpss
#
format erpss
#
# gain (constant across all channels)
#
# usage:
# gain value
#
gain 1
#
# scan description
#
# channel is the channel to sample (indexed from 1)
#
# description is the channel description
#
# order of listing gives order in output file and screen. the info is
# parsed in english reading order (left-to-right, top-to-bottom).
#
scan {
#
# channel description channel description channel description
#
1 "ch 1" 2 "ch 2" 3 "ch 3"
4 "ch 4" 5 "ch 5" 6 "ch 6"
7 "ch 7" 8 "ch 8" 9 "ch 9"
10 "ch 10" 11 "ch 11" 12 "ch 12"
13 "ch 13" 14 "ch 14" 15 "ch 15"
16 "ch 16" 17 "ch 17" 18 "ch 18"
19 "ch 19" 20 "ch 20" 21 "ch 21"
22 "ch 22" 23 "ch 23" 24 "ch 24"
25 "ch 25" 26 "ch 26" 27 "ch 27"
28 "ch 28" 29 "ch 29" 30 "ch 30"
31 "ch 31" 32 "ch 32" 33 "ch 33"
34 "ch 34" 35 "ch 35" 36 "ch 36"
37 "ch 37" 38 "ch 38" 39 "ch 39"
40 "ch 40" 41 "ch 41" 42 "ch 42"
43 "ch 43" 44 "ch 44" 45 "ch 45"
46 "ch 46" 47 "ch 47" 48 "ch 48"
49 "ch 49" 50 "ch 50" 51 "ch 51"
52 "ch 52" 53 "ch 53" 54 "ch 54"
55 "ch 55" 56 "ch 56" 57 "ch 57"
58 "ch 58" 59 "ch 59" 60 "ch 60"
61 "ch 61" 62 "ch 62" 63 "ch 63"
64 "ch 64"
}
#
# ansillary info
#
experiment "test"
experimenter "arthur"
subject "ejg"
Arthur Jones, sponsored by: Yale University, University of Oregon,
Dartmouth College, University of California, San Diego, University of Texas,
San Antonio, University of California, Davis and the Salk Institute for
Biological Studies.
digitize(1)
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