Reward Stop Signal Task (RSST)

Implemented through extensions systems in the RSST module.

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This experiment perform the same task implemented in 1: Background: Inhibitory control, a key modulatory component of cognition guiding strategy and behaviour, can be affected by diverse contingencies. We explore here the effect of expectation of reward over behavioural adjustment in a Stop Signal Task modulated by reward. We hypothesize that cognitive control is modulated by different expectation of the reward.

Methods: Participants were allocated to two groups differing in their degree of knowledge in what to expect from rewards. Expected Specific Reward participants (N = 21) were informed of the different monetary feedbacks they would receive after each successful inhibition. Unexpected Reward participants (N = 24) were only told that they would receive monetary reward after correct inhibitory trials, but not the amounts or differences.

Configuration options

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Inter stimulus interval:
Time between flashes. 1.6s - 2s by default.

Stmuli duration: The time for each stimuli to be displayed. 750 bu default.

Initial delay: The inhibition time for the first trial, this will change according to the subject performance. 500 by default.

Trials:
Number of targets to use in the run. 10 targets by default. 60 by default.
1

Paula M Herrera, Alberto Vélez Van Meerbeke, Mario Speranza, Claudia López Cabra, Mauricio Bonilla, Michaël Canu, and Tristan A Bekinschtein. Expectation of reward differentially modulates executive inhibition. BMC psychology, 7(1):1–10, 2019.