Brain Imaging & Analysis Center

ShowFlip is an integer used to specify whether the Y coordinate specified in a Showplay Stimulus table for visual stimulus events (text, images, videos) should be interpreted relative to the top or bottom of the display screen. Originally, for compatability with previous software, the default screen origin was the bottom left corner. This corresponds to ShowFlip value 1, which is the default. Set ShowFLip to 0 to have Y locations in the stimulus table interpreted relative to the top of the screen (standard video origin upper left corner).

ShowFlip:

• 0 - stimulus table display origin is upper left corner
• 1 - (default) stimulus table display origin is bottom left corner

Note: ShowFlip is set to 1 when CIGAL starts but is not reset to 1 for each Showplay paradigm. So if you change it, it will keep the new value unless you explicitly change it again.

See Also:
Paradigm parameter file, Stimulus table

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