Computerized working memory training after stroke--a pilot study. Reducing attention deficits after stroke using attention process training: a randomized controlled trial. Efficacy of time pressure management in stroke patients with slowed information processing: a randomized controlled trial.
To examine the effects of working memory (WM) training in adult patients with stroke.
                A randomized pilot study with a treatment group and a passive control group; 18 participants (12 males) in a vocational age group (mean age 54 years) were randomized to either the treatment or the control condition. The intervention consisted of computerized training on various WM tasks for five weeks. A neuropsychological test battery and self-rating on cognitive functioning in daily life (the CFQ) were administered both before and after the treatment.
                Statistically significant training effects were found on the non-trained tests for WM and attention, i.e., tests that measure related cognitive functions but are not identical to tasks in the training programme (Span board p < 0.05; PASAT p < 0.001; Ruff 2&7 p < 0.005). There was a significant decrease in symptoms of cognitive problems as measured by the CFQ (p < 0.005). Conclusion: More than one year after a stroke, systematic WM training can significantly improve WM and attention. Impaired attention contributes to poor stroke outcomes. Attention process training (APT) reduces attention deficits after traumatic brain injury. There was no evidence for effectiveness of APT in stroke patients. This trial evaluated effectiveness of APT in improving attention and broader outcomes in stroke survivors 6 months after stroke.
                Participants in this prospective, single-blinded, randomized, clinical trial were 78 incident stroke survivors admitted over 18 months and identified via neuropsychological assessment as having attention deficit. Participants were randomly allocated to standard care plus up to 30 hours of APT or standard care alone. Both groups were impaired (z < or = -2.0) across measures of attention at baseline, with the exception of Paced Auditory Serial Addition Test, which was below average (z < or = -1.0). Outcome assessment occurred at 5 weeks and 6 months after randomization. The primary outcome was Integrated Visual Auditory Continuous Performance Test Full-Scale Attention Quotient.
                APT resulted in a significantly greater (P<0.01) improvement on the primary outcome than standard care. Difference in change on the Cognitive Failures Questionnaire approached significance (P=0.07). Differences on other measures of attention and broader outcomes were not significant.
                APT is a viable and effective means of improving attention deficits after incident stroke. Winkens I, Van Heugten CM, Wade DT, Habets EJ, Fasotti L. Efficacy of Time Pressure Management in stroke patients with slowed information processing: a randomized controlled trial.
                To examine the effects of a Time Pressure Management (TPM) strategy taught to stroke patients with mental slowness, compared with the effects of care as usual.
                Randomized controlled trial with outcome assessments conducted at baseline, at the end of treatment (at 5-10wk), and at 3 months.
                Eight Dutch rehabilitation centers.
                Stroke patients (N=37; mean age +/- SD, 51.5+/-9.7y) in rehabilitation programs who had a mean Barthel score +/- SD at baseline of 19.6+/-1.1.
                Ten hours of treatment teaching patients a TPM strategy to compensate for mental slowness in real-life tasks.
                Mental Slowness Observation Test and Mental Slowness Questionnaire.
                Patients were randomly assigned to the experimental treatment (n=20) and to care as usual (n=17). After 10 hours of treatment, both groups showed a significant decline in number of complaints on the Mental Slowness Questionnaire. This decline was still present at 3 months. At 3 months, the Mental Slowness Observation Test revealed significantly higher increases in speed of performance of the TPM group in comparison with the care-as-usual group (t=-2.7, P=.01).
                Although the TPM group and the care-as-usual group both showed fewer complaints after a 3-month follow-up period, only the TPM group showed improved speed of performance on everyday tasks. Use of TPM treatment therefore is recommended when treating stroke patients with mental slowness.
The effectiveness of cognitive rehabilitation remains unconfirmed. The results suggest there may be a short-term effect on attentional abilities, but future studies need to assess the persisting effects and measure attentional skills in daily life. Trials also need to have higher methodological quality and better reporting.