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Workspace and feedback. [Left] Participants sit in front of a grid of dots with 2.5 cm spacing between them, creating a workspace 50 cm wide and 35 cm deep. Targets and responses are referred to via their numerical value, alphabetical letter, and color, e.g., A1Red. [Right] Participant finger position for each feedback mode. [Inset] nTNS was delivered with Tektronix and Digitimer equipment. Electrode placement is indicated on the illustrated participant’s head.
