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Background/Objective: Non-invasive brain stimulation techniques such as transcranial alternat-ing current stimulation (tACS) may help alleviate attention deficits in stroke patients with hemi-spatial neglect by modulating oscillatory brain activity. We applied high-definition (HD)-tACS at alpha frequency over the contralesional hemisphere to support unilateral oscillatory alpha activ-ity and correct for the pathologically altered attention bias in neglect patients. Methods: We performed a within-subject, placebo-controlled study in which sixteen stroke patients with hem-ispatial neglect underwent 10 Hz (alpha) as well as sham (placebo) stimulation targeting the contralesional posterior parietal cortex. Attentional bias was measured with a computerized visual detection paradigm and two standard paper-and-pencil neglect tests. Results: We revealed a significant shift of attentional resources after alpha-HD-tACS, but not sham tACS, toward the ipsilateral and thus contralesional hemifield leading to a reduction in neglect symp-toms, measured with a computerized visual detection paradigm and a widely used standard paper and pencil neglect tests. Conclusions: We showed a significant alpha-HD-tACS-induced shift of attentional resources toward the contralesional hemifield, thus leading to a reduction in neglect symptoms. Importantly, HD-tACS effects persisted after the stimulation itself had ended. This tACS protocol, based on intrinsic oscillatory processes, may be an effective and well -toler-ated treatment option for neglect.(c) 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

The ABC method is a behaviour management technique for use by nurses. ABC refers to the identification of Antecedent events, target Behaviours, and Consequent events. In this longitudinal intervention study with double baseline measurements we evaluated the effectiveness of the ABC method in patients with behavioural problems after acquired brain injury. Fifty-six patients participated in this study. Outcome was measured in terms of overall neuropsychiatric problem behaviour, aggression, apathy and emotional burden experienced by nurses. A process evaluation was performed to investigate usability and acceptability of the method and identify factors that influenced effectiveness. Friedman's ANOVA showed a small significant reduction over time in overall neuropsychiatric problem behaviour and aggression. The reduction was most prominent between the first baseline measurement and the post-implementation and follow-up measurements, not between the second baseline measurement and the post-implementation or follow-up measurements. This first group study on the effects of the ABC method could not prove this technique is effective for patients with behavioural problems after acquired brain injury. Nurses indicated that the ABC method was not fully implemented in their daily routines. This may have influenced results and makes it yet premature to draw firm conclusions on the effects of the ABC method.

Objective: To review and evaluate the effectiveness and methodological quality of available treatment methods for unawareness of deficits after acquired brain injury (ABI). Methods: Systematic literature search for treatment studies for unawareness of deficits after ABI. Information concerning study content and reported effectiveness was extracted. Quality of the study reports and methods were evaluated. Results: A total of 471 articles were identified; 25 met inclusion criteria. 16 were uncontrolled or single-case studies. Nine were of higher quality: 2 randomized controlled trials, 5 single case experimental designs, 1 single-case design with pre- and posttreatment measurement, and 1 quasi-experimental controlled design. Overall, interventions consisted of multiple components including education and multimodal feedback on performance. Five of the 9 high-quality studies reported a positive effect of the intervention on unawareness in patients with some knowledge of their impairments. Effect sizes ranged from questionable to large. Conclusion: Patients with ABI may improve their awareness of their disabilities and possibly attain a level at which they personally experience problems when they occur. At present, because of lack of evidence, no recommendation can be made for treatment approaches for persons with severe impairment of self-awareness in the chronic phase of ABI. We recommended developing and evaluating theory-driven interventions specifically focused on disentangling the components of treatment that are successful in improving awareness. High-quality intervention studies are urgently needed using controlled designs (eg, single-case experimental designs, randomized controlled trials) based on a theoretic perspective with a detailed description of the content of the intervention and suitable outcome measures.