1.4 KiB
Visual reaction times
Once you press enter or return an experiment starts and automatically proceeds until all trials are done.
- An experiment consists of a number of trials.
- Before ach trial starts there will be a pause which is shown by a countdown appearing at the bottom of the screen.
- In each trial the stimulus will appear at a random time after trial start.
- Press the spacebar once you recognize the stimulus.
- Press esc to abort the experiment (all data recorded in this experiment are discarded).
Settings
Pressing the cogwheel in the top right corner allows you to change the settings of the experiment. You can do the changes you want and then close the settings screen by pushing the cogwheel button again.
By default, when you open the tool the first time, 5 trials recorded, and the stimulus will appear at a random time in the interval between minimum delay and maximum delay after start of a trial. Before the first and between trials a countdown appears showing the duration of the pause.
The visual stimulus is always a red dot appearing centered at the fixation cross. The stimulus saliency slider controls the opacity of the red disk. The stimulus size slider controls the size of the disk.
All changes will be stored and are persisted even after the program is closed.