fMRI - Finger-tapping experiment
The fingertapping script implements a simple block‐design fMRI task where participants alternate between “stop” and “tap” cues. After clearing the workspace and loading subject parameters, the script initializes Psychtoolbox (and DataPixx for scanner TTL triggers) and converts visual angles to pixels. It hides the cursor and suppresses keyboard output before showing a scanner‐sync window (showTTLWindow_1/2). During each of parameters.numberOfBlocks trials, it displays either blockOneMsg or blockTwoMsg via showBlockWindow, captures the block’s start and end times, and logs the duration. Once all blocks complete, an end‐of‐experiment window appears, timings are saved to parameters.datafile, keyboard output and cursor are restored, and all screen and DataPixx connections are closed.