Participants could earn the coin only if they responded correctly to each trial of the run.
The brain activation patterns related to each trial were then used to predict the semantic coordinates (for details, please see section: Semantic space from text corpus data).
Task performance was assessed by examining response time to correct responses to each trial type, and calculating a cost between these trial types (cf. Lee et al., 2012; Flanker Cost=Incongruent response time (RT −Congruent RT).
We assigned positive, neutral, and negative IAPS images assigned to each trial type in a counterbalanced fashion, such that each image was presented once in a control and once in an interference context.
Furthermore, Table10 provides additional parameters, specific to each trial (nine in total).
So to each trial i, we can associate as in the previous subsection the matrix G, the vectors b ( m ) and so on.
Moreover, a bonus of 10 points was assigned to each trial if the respondent was able to choose the fastest route (see [13]).
They were encouraged to refrain from alcohol use and strenuous exercise for 48 h, along with food and caffeine for 3 h prior to each trial.
Either way, he got a stipend for participation, and reported to each trial that he was taking only the prescribed drug, in regular doses.
The self-refinement process consists of searching for new solutions in the policy parameter space, associate a reward to each trial, and then sample from the exploration space by a weighted combination of the most successful trials obtained so far.
consisted in the monetary incentive associated to each trial successfully performed by subjects.
