----------------------------------------------------------------------------- EEP 3.1 Max-Planck-Institute of Cognitive Neuroscience 1996-99 cntaverage 3.22 (OSF1 V4.0 alpha) Thu Aug 19 14:09:57 1999 ----------------------------------------------------------------------------- standard: cntaverage <source cnt> <cfg> [<trg in>] [<rej in>] [-p <output path>/[<new code>]] [-c] eog compensation: cntaverage -e [-a] <source cnt> <cfg> [<cls trg in>] [<pfc in>] [-p <output path>/[<new code>]] [-c] options: -p ... output file name all text before the last "/" is interpreted as a path which will be created if needed the rest, if exists, is the new subject code -c calc covariance matrices -e enable eog compensation mode -a apply the eog compensation to eog channels
;----------------------------------------------------------------------------- ;Example configuration file for cntaverage ;----------------------------------------------------------------------------- Conditions: ; list of conditions to average 10 ; condition code (read from .trg file) Cond1 (GREEN) ; condition label / color 20,2A=A ; multiple trigger codes may be summed up into Group_1 (SKY) ; one average ; '=..' assigns the new condition code ; "condition code" (first line) should be a 2 character ; code, it appears in the output .avr filename ; "condition label" (second line) is a max. 10 char. ; identifier which is stored in the file, it appears ; in ERP plot legends Channels: ; list of channel labels FP1 ; (may be a subset of all channels available) FP2 ; if no "Channels" section is spezified, all channels F7 ; are averaged F3 FZ EOGV EOGH Window: ; averaging window in msec - relative to trigger -200..1500 Baseline: ; definition of baseline -300..0 ; (may extend beyond or be completely outside of ; averaging window, if required..) ; you can turn off the baseline calculation by ; writing "ABS" instead of the window borders ; the baseline area reference trigger can be distinct from the ; average window reference ;Reference displacement: -1 ; you can specify a trigger index offset ;Scanning for triggers: 9 9 15 15 ; or a trigger value for each condition ; (the reference displacement value indicates ; the direction for baseline trigger search) Rejection: ; range where rejection marks are being checked for -200..1500 ; (rejection may temporarily be disabled by placing ; the keyword 'OFF' behind 'Rejection:')The allowed condition colors are:
BLUE, GREEN, CYAN, RED, MAGENTA, YELLOW, WHITE, BLACK, STEEL, SKY, MINT, SEA, LEAVES, OLIVE, SIENNA, LIGHTGREEN, OCHRE, APRICOT, ORANGE, CRIMSON, ROSE, PINK, PURPLE, LILAC, AUBERGINE, PLUM, UV
cntaverage
computes means/variances of
the corresponding sample points in multiple
epochs (trials) of one raw data file.
It uses its configuration file
and the wealth of signal/trial classifcation lists which you got
from the preceding evaluation steps
(cntreject
, xcnt
, trged
, xeog
).
In detail, the following happens for each condition which is defined in the .cfg file:
Standard:
xeog
's "Save Trial Classification" function).
It is an error if no classification can be found for one of the trials.
and you have the following conditions defined in ../cfg/average.cfg./foo.cnt ./foo.trg ./foo.rej ../cfg/average.cfg
Then, the commandConditions: da,di,dum=d1 Daddel (GREEN) li,la,lei=l1 Laber (RED)
cntaverage foo.cnt ../cfg/average.cfg -p test/
Or, the command./test/foo.bsl - baseline value listing ./test/food1.avr - ERP for subject foo in condition "Daddel"(d1) ./test/fool1.avr - ERP for subject foo in condition "Laber"(l1)
cntaverage foo.cnt ../cfg/average.cfg -p test/pa53
./test/pa53.bsl - baseline value listing ./test/pa53d1.avr - ERP for subject pa53, formerly known as "foo", in condition "Daddel"(d1) ./test/pa53l1.avr - ERP for subject pa53, formerly known as "foo", in condition "Laber"(l1)