Between- and within-scanner variability in the CaliBrain study n-back cognitive task

Victoria Gradin, Viktoria-Eleni Gountouna, Gordon Waiter, Trevor S. Ahearn, David Brennan, Barrie Condon, Ian Marshall, David J. McGonigle, Alison D. Murray, Heather Whalley, Jonathan Cavanagh, Donald Hadley, Katherine Lymer, Andrew McIntosh, Thomas William Moorhead, Dominic Job, Joanna Wardlaw, Stephen M. Lawrie, John Douglas Steele