gaze_exp

# gaze_exp
By : Martin SZINTE<br/>
Projet : gaze_exp<br/>
With : Matthias NAU, Jan Patrick STELLMANN & Tomas KNAPEN
Version: 1.0<br/>

## Version description
Codes grouping analyses of 2 preliminary projects made to determine<br/>
gaze modulation effects on fMRI data together with a PRF protocol.<br/>

## Acquisition sequences

#### Structural:
Phillips Achieva 3T, 32 channel receive-coil array with single channel tranmit coil.<br/>
1.0 mm isotropic T1w (4 scans) + 1.0 mm isotropic T2w.<br/>

#### Fonctional:
Philips Achieva 7T scanner with a 32-channel receive-coil array with 8-channel transmit coil (Nova Medical, Wilmington, MA).<br/>
3D-EPI sequence at a resolution of 1.8 mm isotropic with a 1.3s volume acquisition time, 44ms TR, 17ms TE. <br/>
98 x 112 x 112 voxels covering the entire brain, SENSE acceleration was applied in both the AP (2.61-fold) and RL (3.27-fold).
Susceptibility-induced distortions corection donw with topup.

## Experiment 1: __"pRFexp7T"__
pRf protocol with either attention on the stimulus (bar) or fixation texture.<br/>
Participant fixate at the screen center.<br/>

#### Tasks:
1. AttendFixGazeCenterFS: fixate screen center and report orientation of a pink noise patern shown at screen center.<br/>

2. AttendStimGazeCenterFS: fixate screen center and report orientation of a pink noise pattern shown in the scanning bar. <br/>

#### Session 1
- Run 1 : task-AttendFixGazeCenterFS_run-01<br/>
- Run 2 : task-AttendStimGazeCenterFS_run-01<br/>
- Run 3 : task-AttendFixGazeCenterFS_run-02<br/>
- Run 4 : task-AttendStimGazeCenterFS_run-02<br/>

#### Session 2
- Run 1 : task-AttendFixGazeCenterFS_run-03<br/>
- Run 2 : task-AttendStimGazeCenterFS_run-03<br/>
- Run 3 : task-AttendFixGazeCenterFS_run-04<br/>
- Run 4 : task-AttendStimGazeCenterFS_run-04<br/>

## Experiment 2: __"gazeField7T"__
Effect of gaze direction on resting state data. <br/>
Participants fixate straight ahead or 4 cardianl directions for about 1.5 min<br/>
* run the experiment using _experiment/gazeField7T/main/expLauncher.m_

#### Tasks:
1. Calib: Calibration with 9 extreme eye directions, fixating 13 sec each<br/>
order: center, up, down, left, right, left-up, right-up, left-down, right-down<br/>

2. GazeCW: 4 cardianal eye directions, 1 min 28.4 sec <br/>
order: center -> right -> up -> left -> down<br/>

3. GazeCCW: 4 cardianal eye directions, 1 min 28.4 sec <br/>
order : down -> left -> up -> right -> center<br/>

#### Session 4
- Run 1 : task-Calib_run-01 :<br/>
- Run 2 : task-GazeCW_run-01 : 7 min 22 sec<br/>
- Run 3 : task-GazeCCW_run-01 : 7 min 22 sec<br/>
- Run 4 : task-GazeCW_run-02 : 7 min 22 sec<br/>
- Run 5 : task-GazeCCW_run-02 : 7 min 22 sec<br/>
- Run 6 : task-GazeCW_run-03 : 7 min 22 sec<br/>
- Run 7 : task-GazeCCW_run-03 : 7 min 22 sec<br/>

## Experiment 3: __"pGFexp7T"__
Determine gain field maps using an equivalent to pRF scanning design but with gaze changes<br/>
over a large visual portion of the visual field in total darkness.<br/>
* run the experiment using _experiment/pGFexp7T/main/expLauncher.m_

#### Tasks:
1. Calib: Calibration with 9 extreme eye directions, fixating 13 sec each<br/>
order: center, up, down, left, right, left-up, right-up, left-down, right-down<br/>

2. GazeLines: 97 eye directions (5 by 5 grid in lines zigzag), 2TR each<br/>

3. GazeColumns: 97 eye directions (5 by 5 grid in columns zigzag), 2TR each <br/>

#### Session 5
- Run 1 : task-Calib_run-01: 90TRs - 1 min 57 sec
- Run 2 : task-GazeLines_run-01 : 194TRs - 4 min 12.2 sec
- Run 3 : task-GazeColumns_run-01 : 194TRs - 4 min 12.2 sec
- Run 4 : task-GazeLines_run-02 : 194TRs - 4 min 12.2 sec
- Run 5 : task-GazeColumns_run-02 : 194TRs - 4 min 12.2 sec
- Run 6 : task-GazeLines_run-03 : 194TRs - 4 min 12.2 sec
- Run 7 : task-GazeColumns_run-03 : 194TRs - 4 min 12.2 sec
- Run 8 : task-GazeLines_run-04 : 194TRs - 4 min 12.2 sec
- Run 9 : task-GazeColumns_run-04 : 194TRs - 4 min 12.2 sec
- Run 10 : task-GazeLines_run-05 : 194TRs - 4 min 12.2 sec
- Run 11 : task-GazeColumns_run-05 : 194TRs - 4 min 12.2 sec