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. Author manuscript; available in PMC: 2013 Oct 1.
Published in final edited form as: Pharmacol Biochem Behav. 2012 Jun 29;102(4):526–531. doi: 10.1016/j.pbb.2012.06.016

Fig. 1.

Fig. 1

Schematic diagram of a single effort expenditure for rewards task (‘EEfRT’) trial. A) 1 s fixation cue. B) 5 s choice period in which subjects are presented with reward magnitude of the hard task for that trial, and the probability of receiving reward for that trial. C) 1 s “ready” screen. D) Subjects make rapid button presses to complete the chosen task for 7 s (easy task) or 21 s (hard task). E) Feedback completion of the task. F) Feedback on whether they received any money for that trial.