It looks like you have an awful lot of null in there (6+7+8+6+7+8+11)*2 = 106 sec of stimulation The total run length is 130*2 = 260 sec Leaving 260-106 = 154 sec for null. There are only 7*2=14 events total, so the average null will be 154/14 = 11 sec

I'm surprised that one null was 75 sec, but not too surprised.

doug

Jasony Brozinsky wrote:

Hi, Optseq2 is returning designs where the last NULL even is upwards of 75 seconds (more than 4 times my psdMax!. Can I keep the rest of the order as is, and just truncate the last NULL event to be equal to my PsdMax value? Below is my command and a sample output file:

optseq2 --ntp 130 --tr 2 --cost eff --tprescan 0 --psdwin 0 18 1 --ev EVT3 6 2 --ev EVT4 7 2 --ev EVT5 8 2 --ev EVS3 6 2 --ev EVS4 7 2 --ev EVS5 8 --ev Other 11 2 --tnullmin 2 --tnullmax 2 --nsearch 10000 --focb 1000 --nkeep 100 --o utput --log log --polyfit 2

0.0000 2 7.000 1.0000 EvT4 7.0000 0 6.000 1.0000 NULL 13.0000 7 11.000 1.0000 Other 24.0000 0 6.000 1.0000 NULL 30.0000 7 11.000 1.0000 Other 41.0000 0 4.000 1.0000 NULL 45.0000 3 8.000 1.0000 EvT5 53.0000 0 6.000 1.0000 NULL 59.0000 5 7.000 1.0000 EvS4 66.0000 0 8.000 1.0000 NULL 74.0000 5 7.000 1.0000 EvS4 81.0000 0 4.000 1.0000 NULL 85.0000 1 6.000 1.0000 EvT3 91.0000 0 5.000 1.0000 NULL 96.0000 4 6.000 1.0000 EvS3 102.0000 0 4.000 1.0000 NULL 106.0000 1 6.000 1.0000 EvT3 112.0000 0 6.000 1.0000 NULL 118.0000 6 8.000 1.0000 EvS5 126.0000 0 12.000 1.0000 NULL 138.0000 3 8.000 1.0000 EvT5 146.0000 0 9.000 1.0000 NULL 155.0000 2 7.000 1.0000 EvT4 162.0000 0 5.000 1.0000 NULL 167.0000 6 8.000 1.0000 EvS5 175.0000 0 2.000 1.0000 NULL 177.0000 4 6.000 1.0000 EvS3 183.0000 0 77.000 1.0000 NULL

Craig

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