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| Participants view varying levels of contrast in sine wave gratings presented as dynamic moving images surrounding a central fixation target spotting task (spot a target in a continuous stream of letters). attachment:disc.png |
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| A block design is used to allow for maximal HRF values and return to baseline. Alternate runs of the constant stimulus and adaptive procedure. |
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| Measurements: 780 TR 1 16 slices V1 ROI |
Measurements: 780[[BR]] TR 1 [[BR]] 16 slices [[BR]] V1 ROI [[BR]] |
Visual Contrast Response Function Program
attachment:VisualResponseContrast
Participants view varying levels of contrast in sine wave gratings presented as dynamic moving images surrounding a central fixation target spotting task (spot a target in a continuous stream of letters).
attachment:disc.png
Parameters
A block design is used to allow for maximal HRF values and return to baseline. Alternate runs of the constant stimulus and adaptive procedure.
4 epis (2 constant and 2 adaptive runs at 2.5 and 6.5 each) Measurements: 780BR TR 1 BR 16 slices BR V1 ROI BR