[Freesurfer] low eff and VRF values

(1) Version: optseq2.c,v 2.21.2.1 (2) Computer operating system: Mac OS X Version 10.7.3 (3) Command line: optseq2 --ntp 230 --tr 1.5 --psdwin 0 24 0.5 --ev go 7 36 --ev nogo 7 12 --nkeep 4 --o gonogo --nsearch 1000 (4) Description of the problem: This is in reference to a go/no-go paradigm. I

[Freesurfer] optseq2 event duration definition

(1) Version: optseq2.c,v 2.21.2.1 (2) Computer operating system: Mac OS X Version 10.7.3 (3) Command line: Not relavant here (4) Description of the problem: A trial in my experiment involves a countdown (duration 2 seconds) followed by the event of interest (0.5 seconds) followed by a blank