Tips and tricks
SMART-T is designed to be fairly flexible, and can therefore be used for paradigms beyond anticipatory measures. This thread points to a few tips that expand the kinds of paradigms one can think of.
1) Presenting a single image per trial, contingent on looking at a central fixation point
- Set a background image with a fixation image (e.g. image of a cross) at the central fixation point
- Set node1 to 1 pixel below the center, set the image size to 0 and set the node as Wait Attention
- Set node2 to the central pixel, size to 1 (as defined in the Structure pane) and optionally add a loom for the desired duration
2) Presenting a single movie per trial
- The same as before, except the target object stays at size 0 at node2, which is immediately followed by the 'reward movie'
3) Timing control
- You can introduce delays or stopping at particular nodes by adding a loom that 'grows' to 100%, for the desired duration
4) Object (dis)appearance control
- You can make an object disappear by setting the Object(Image) Size Ratio (Path pane) to 0. NB: this interacts appropriately with the looms - e.g., a 150% increase in loom of a 0 size object is still 0.
5) Timing note
- If two nodes are too close to each other, SMART-T might skip one because of temporal interpolation. To deal with this, simply change the Object(Image) Speed Ratio between the two nodes in the Path pane.
