Working Memory Training in Huntington's Disease

The intervention consisted of 25 Cogmed sessions, typically completed over a five week period (i.e. 5 days per week), with each session lasting between 40-50 minutes per day. The program consists of 12 exercises that target visuo-spatial or verbal working memory. At each training session, participants completed 8 of the 12 exercises (order selected by the user), with 15 trials per exercise. Cogmed QM is an adaptive program, wherein task difficulty is adjusted to performance on each trial. The level of difficulty adjusts continuously and automatically, ensuring that each session provides an engaging, challenging level of WM capacity. Breaks were permitted, and encouraged, at the participants' discretion throughout the session.