Data from: Increased dopamine release after working-memory updating training: neurochemical correlates of transfer

Lars Bäckman, Otto Waris, Jarkko Johansson, Micael Andersson, Juha O. Rinne, Kati Alakurtti, Anna Soveri, Matti Laine & Lars Nyberg
Previous work demonstrates that working-memory (WM) updating training results in improved performance on a letter-memory criterion task, transfers to an untrained n-back task, and increases striatal dopamine (DA) activity during the criterion task. Here, we sought to replicate and extend these findings by also examining neurochemical correlates of transfer. Four positron emission tomography (PET) scans using the radioligand raclopride were performed. Two of these assessed DAD2 binding (letter memory; n-back) before 5 weeks of updating...
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