trm_569fc84bd541d Cognitive Atlas : Lexicon : Penn Fractal N-Back RDF output for 'Penn Fractal N-Back' InteractiveResource Cognitive Atlas Cognitive Atlas RDF Generator Alfonso Bonilla 2016-01-20 17:47:56 text/rdf en Generated by testgen.php on Sun Nov 19 2:44:15 PST 2017. No previous definition revisions. This is the first and only definition provided. SKOS properties defined in A measure of attention and working memory. In this task, participants are asked to pay attention to fractal designs displayed on the computer screen, one at a time, and to press the spacebar according to one rule: the 2-back. During the 2-back, the participant must press the spacebar whenever the design on the screen is the same as the one displayed before the previous one (i.e. in the series design A, design B, design A, the participant should press the spacebar on or immediately after the second design A . In all trials, the participant has 2500 ms to press the spacebar. The participant practice the 2-Back rule, in which he/she is allowed to make mistakes and then, when he/she completes all practices successfully, the task will begin. Penn Fractal N-Back sFNBx2, FNB2 attention is measured by the contrast of trials in the Penn Fractal N-Back working memory is measured by the contrast of trials in the Penn Fractal N-Back