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| Content Provider | frontiers |
|---|---|
| Author | Boujut, Arnaud Verty, Lynn Valeyry Maltezos, Samantha Lussier, Maxime Mellah, Samira Bherer, Louis Belleville, Sylvie |
| Abstract | Background: Working memory (WM) capacity declines with advancing age, which impacts the ability to carry out complex cognitive activities in everyday life. Updating and inhibition processes have been identified as some of the most critical attentional control processes of WM and are linked to age-related WM decline. The general aim of the Attentional Control Training in Older People (ACTOP) study was to perform a side-by-side comparison of updating and inhibition training to examine their respective efficacy and transfer in cognitively healthy older adults. Method: The study was a three-arm, double-blind, randomized controlled trial registered with the US National Institutes of Health clinical trials registry (ClinicalTrials.gov identifier NCT03532113). Ninety older adults were randomly assigned to 12 half-hour sessions of updating (N-back type exercises), inhibition (Stroop-like exercises) computerized training or active control (general knowledge quiz game). A group of thirty younger adults completed all proximal and WM transfer tasks without training to assess age-related deficits prior to training and whether training reduces these deficits. Results: Piecewise mixed models show quick improvement of performance during training for both updating and inhibition training. During updating training, the progression was more pronounced for the most difficult (3-back) than for the least (1-back) difficult level until the ninth session. Updating and inhibition training groups improved performance on all proximal and WM transfer measures but these improvements did not differ from the active control group. Younger adults outperformed older ones on all transfer tasks prior to training. However, this was no longer the case following training for two transfer tasks regardless of the training group. Conclusion: The overall results from this study suggest that attentional control training is effective in improving updating and inhibition performance on training tasks. The optimal dose to achieve efficacy is approximately nine half-hour sessions and the dose effect was related to difficulty level for updating training. Despite an overall improvement of older adults on all transfer tasks, neither updating nor inhibition training provided additional improvements in comparison with the active control condition. This suggests that the efficacy of process-based training does not directly affect transfer tasks. |
| ISSN | 16642295 |
| DOI | 10.3389/fneur.2020.606873 |
| Volume Number | 11 |
| Journal | Frontiers in Neurology |
| Language | English |
| Publisher Date | 2020-12-03 |
| Access Restriction | Open |
| Subject Keyword | Working memory Aging Transfer Cognitive training Attentional control |
| Content Type | Text |
| Resource Type | Article |
| Subject | Neurology Neurology (clinical) |
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