Differences
This shows you the differences between two versions of the page.
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mgl:taskreference [2013/08/02 07:01] |
mgl:taskreference [2013/10/08 21:52] |
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| If you want the second interval to be randomized over the interval 2-2.5 seconds in intervals of 0.1 seconds (i.e. you want it to be either 2,2.1,2.2,2.3,2.4 or 2.5: | If you want the second interval to be randomized over the interval 2-2.5 seconds in intervals of 0.1 seconds (i.e. you want it to be either 2,2.1,2.2,2.3,2.4 or 2.5: | ||
| - | task.segmin = [1.3 2]; | + | task.segmin = [1.3 nan]; |
| - | task.segmax = [1.3 2.5]; | + | task.segmax = [1.3 nan]; |
| - | task.segquant = [0 0.1]; | + | task.segdur{2} = [2:0.1:2.5]; |
| + | |||
| + | Or, if you want different durations with different probabilities (the above would make each of the segment durations equally possible: | ||
| + | |||
| + | task.segmin = [1.3 nan]; | ||
| + | task.segmax = [1.3 nan]; | ||
| + | task.segdur{2} = [1 2 8]; | ||
| + | task.segprob{2} = [0.8 0.1 0.1]; | ||
| + | |||
| + | This would make the second segment have durations of either 1 2 or 8 seconds with the 1 second one having a probability of 0.8 and the others having 0.1 probability. You can also specify multiple segments to have different durations like: | ||
| + | |||
| + | task.segmin = [1.3 nan nan]; | ||
| + | task.segmax = [1.3 nan nan]; | ||
| + | task.segdur{2} = [2:0.1:2.5]; | ||
| + | task.segdur{3} = [1 2 8]; | ||
| + | task.segprob{3} = [0.8 0.1 0.1]; | ||
| + | |||
| + | This would make segment 2 and segment 3 behave as in the above two examples. | ||
| You can also have a segment wait until a backtick happens, so that you can easily synch to volumes, for example: | You can also have a segment wait until a backtick happens, so that you can easily synch to volumes, for example: | ||
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| task.synchToVol = [0 1]; | task.synchToVol = [0 1]; | ||
| - | This will cause the second segment to last a random amount of time between 2 and 2.5 seconds and then wait until a backtick occurs before going on to the next trial. | + | This will cause the second segment to last a random amount of time between 2 and 2.5 seconds and then wait until a backtick occurs before going on to the next trial. Note that when using synchToVol it is a good idea to make the segment for which you are waiting for a volume acquisition to happen slightly shorter than you actually want. This way the segment time will be finished and it will be waiting for the volume acquisition to continue. |
| ===== How to wait for user input before moving to next segment ===== | ===== How to wait for user input before moving to next segment ===== | ||