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mdl-webgazer

versions

• gRT: 1
  • date: 2018-07-03 to 2018-08-23 and
  • date: 2018-08-23 to 2019-06-01
  • differences from previous version:
    • calibration occuring in each block
    • updated version of webgazer
    • code clean-up

design

trial

• fixation: 0-1500ms (1500)
• facestim: 1500-4500ms (3000)
• dotloc: 4250-14250ms (10000)
• delay: 14250-14500ms (250)

task

• nine blocks of 198 trials
• two conditions (subject does same version each time):
  • active training: -- probe [target] 80% neutral stim location -- probe [target] 20% dysphoric [sad] stim location
  • placebo: -- probe [target] 50% neutral stim location -- probe [target] 50% dysphoric [sad] stim location

structure

• 198-trials (total), 9-blocks, 22-trials [12 - pofa; 10*9 - iaps]
• minimal duration: 17 minutes + 4 minute break + 5 minute practice ** (12 pofa_trials * 9 blocks * (4.5 second stim) + ** (10 iaps_trials * 9 blocks * (6 second trial))
• maxinum duration: 50 minutes [include max response time]: 17 minutes + 4 minute break + 5 minute practice ** (12 pofa_trials * 9 blocks * (4.5 second stim + 10 second response) + ** (10 iaps_trials * 9 blocks * (6 second trial + 10 second response))

gRT
├── Practice
│	├── IAPS
│	│	├── Fixation: 1500msec
│	│	├── Stimulus: 4500msec
│	│	├── Probe: User defined 
│	├── POFA
│	│	├── Fixation: 1500msec
│	│	├── Stimulus: 3000msec
│	│	├── Probe: User defined
├── Task
│	├── Block 1: 20 trials
│	│	├── POFA: 12 trials
│	│	├── IAPS: 10 trials
│	├── Block 2
│	├── Block 3
│	├── Break: 2 minutes
│	├── Block 4 
│	├── Block 5
│	├── Block 6
│	├── Break: 2 minutes
│	├── Block 7
│	├── Block 8
│	├── Block 9