BLAST : a short computerized test to measure the ability to stay on task. Normative behavioral data and detailed cortical dynamics [article]

Mathilde Petton, Marcela Perrone-Bertolotti, Diego Mac-Auliffe, Olivier Bertrand, Pierre-Emmanuel Aguera, Florian Sipp, Manik Batthacharjee, Jean Isnard, Lorella Minotti, Sylvain Rheims, Philippe Kahane, Vania Herbillon (+1 others)
2018 bioRxiv   pre-print
This article provides an exhaustive description of a new short computerized test to assess on a second-to-second basis the ability of individuals to stay on task, that is, to apply selectively and repeatedly task-relevant cognitive processes. The task (Bron/Lyon Attention Stability Test, or BLAST) lasts around one minute, and measures repeatedly the time to find a target letter in a two-by-two letter array, with an update of all letters every new trial across thirty trials. Several innovative
more » ... everal innovative psychometric measures of attention stability are proposed based on the instantaneous fluctuations of reaction times throughout the task, and normative data stratified over a wide range of age are provided by a large (>6000) dataset of participants aged 8 to 70. We also detail the large-scale brain dynamics supporting the task from an in-depth study of 32 participants with direct electrophysiological cortical recordings (intracranial EEG) to prove that BLAST involves critically large-scale executive attention networks, with a marked activation of the dorsal attention network and a deactivation of the default-mode network. Accordingly, we show that BLAST performance correlates with scores established by ADHD-questionnaires.
doi:10.1101/498691 fatcat:2stgy3oc3jgqzojvem5p6r7c5a