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Stimulation procedure and duration for verum stimulation (sham was identical except stimulation only lasted for 30 s, at the onset of the fixation period).
| Phase | tDCS | Duration |
|---|---|---|
| Instructions | No | Variable |
| Fixation | Yes | 3 min |
| Training | Yes | 17 min |
| Test Instructions | No | Variable |
| Test | No | 6 min |
