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1 – 6 of 6Fatemeh Fahimi, Wooi Boon Goh, Tih-Shih Lee and Cuntai Guan
This study aims to investigate the correlation between neural indexes of attention and behavioral indexes of attention and detect the most informative period of brain activity in…
Abstract
Purpose
This study aims to investigate the correlation between neural indexes of attention and behavioral indexes of attention and detect the most informative period of brain activity in which the strongest correlation with attentive performance (behavioral index) exists. Finally, to further validate the findings, this paper aims at the prediction of different levels of attention function based on the attention score obtained from repeatable battery for the assessment of neurophysiological status (RBANS).
Design/methodology/approach
The present paper analyzes electroencephalogram (EEG) signals recorded by a single prefrontal channel from 105 elderly subjects while they were responding to Stroop color test which is an attention-demanded task. Beside Stroop test, subjects also performed RBANS which provides their level of functionality in different domains including attention. After data acquisition (EEG during Stroop test and RBANS attention score), the authors extract the spectral features of EEG as neural indexes of attention and subjects’ reaction time in response to Stroop test as behavioral index of attention. Then, they explore the correlation between these post-cue frequency band oscillations of EEG with elderly response time (RT). Next, the authors exploit these findings to classify RBANS attention score.
Findings
The observations of this study suggest that there is significant negative correlation between alpha gamma ratio (AGR) and RT (p < 0.0001), theta beta ratio (TBR) is positively correlated with subjects’ RT (p < 0.0001), these correlations are stronger in a 500ms period right after triggering the cue (question onset in Stroop test), and 4) TBR and AGR can be effectively used to predict RBANS attention score.
Research limitations/implications
Because of the experiment design, the pre-cue EEG of the next trail was very much overlapped with the post-cue EEG of the current trail. Therefore, the authors could analyze only post-cue EEG. In future study, it would be interesting to investigate the predictability of subject’s future performance from pre-cue EEG and mental preparation.
Practical implications
This study provides an insight into the research on detection of human attention level from EEG instead of conventional neurophysiological tests. It has also potential to be used in implementation of feasible and efficient EEG-based brain computer interface training systems for elderly.
Originality/value
To the best of the authors’ knowledge, this study is among very few attempts for early prediction of cognitive decline in the domain of attention from brain activity (EEG) instead of conventional tests which are prone to human errors.
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Orla Dolan, Joanne O’Halloran, Micheal O’Cuill, Atiqa Rafiq, Jennifer Edgeworth, Michael Hogan and Agnes Shiel
Dementia is a complex, progressively degenerative condition. It results in loss of cognitive and functional capabilities, along with a significant increase in the level of…
Abstract
Purpose
Dementia is a complex, progressively degenerative condition. It results in loss of cognitive and functional capabilities, along with a significant increase in the level of dependency. A reduction in the use of pharmacological interventions correlates with an increased in good quality non-pharmacological interventions in dementia care. The purpose of this study is to examine the impact of 14-session face-to-face cognitive stimulation therapy (CST) and Sonas group interventions on individuals living with dementia with moderate cognitive impairment, from pre-intervention to post-intervention in terms of their cognition, communication, neuropsychiatric symptoms, activities of daily living and quality of life.
Design/methodology/approach
A pilot single blind prospective controlled trial evaluated two group intervention approaches, cognitive stimulation therapy (CST) and Sonas, with 28 participants with moderate dementia. Pseudorandomisation and single blinding were implemented. CST has a solid evidence base. Sonas is a widely used multi-sensory intervention in Ireland with an emerging evidence base. Participants were recruited from a mental health service. Participants who had a formal diagnosis of dementia, moderate cognitive impairment and some ability to communicate and understand communication were included.
Findings
Results supported CST to a greater extent than Sonas. The CST group showed significant changes in cognition (p = 0.032) and communication (p = 0.006). Both groups had significant changes in carer quality of life (CST, p = 0.019; Sonas, p = 0.035). Results support the recommendations for a future definitive trial.
Research limitations/implications
Rehabilitation potential of individuals living with moderate dementia was demonstrated. This study suggests that group interventions like these impact on the trajectory of dementia.
Practical implications
Rehabilitation interventions impact on the trajectory of dementia. CST and Sonas have no impact on activities of daily living. Future studies with larger sample sizes, 16 weeks intervention period and control groups are required.
Social implications
This pilot study supports CST over Sonas interventions for individuals living with moderate dementia. Multiple outcome measures demonstrated trends towards significance for both interventions. Future definitive trials may detect a significant effect of both interventions.
Originality/value
A dementia diagnosis is devastating and generally creates negative perceptions and associations (Alvira, 2014). In contrast, the outcomes of this study are positive. This study provides evidence that occupational therapist intervention can impact on the trajectory of the condition with people with dementia demonstrating that they do have rehabilitation potential by responding to treatment and improving and maintaining their abilities as they progress through the condition.
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Noha El-Bassiouny, Hagar Adib, Maik Hammerschmidt and Heba Ali
Claire Kearns Murphy, Louise Kemps, Catherine McDonough and Suzanne McDonough
Early interventions focusing on exercise and lifestyle are important for individuals with a diagnosis of psychosis due to increased risk of poor physical health and reduced life…
Abstract
Purpose
Early interventions focusing on exercise and lifestyle are important for individuals with a diagnosis of psychosis due to increased risk of poor physical health and reduced life expectancy. This study aims to test the feasibility of a multicomponent lifestyle intervention for individuals with first episode psychosis (FEP).
Design/methodology/approach
Individuals attending an Irish FEP service were invited to engage in an eight-week programme including individual and group exercise sessions, group educational sessions and one dietician consultation. Physical activity, physical health, mental health, cognition and personal goals measures were completed pre- and post-intervention and analysed using descriptive statistics. Feasibility data was collected via a non-standardised participant questionnaire and informal data on completion of measures and engagement with the programme.
Findings
Ten participants with a diagnosis of FEP completed the intervention. Participants were satisfied with the intervention and adherence rates were high for weekly individual gym sessions but lower for group exercise and education sessions. Mean time spent engaging in physical activity increased and sedentary behaviours decreased. Participants indicated increased readiness for change with 90% moving to the action or maintenance stages of change. Participants attained 74% of their personal goals. There were no changes in average body mass index, cognition or mental health. Data relating to blood pressure, blood tests and steps was missing or incomplete.
Originality/value
This study indicates an eight-week exercise and lifestyle programme is feasible and acceptable in a clinical setting. Recommendations relating to satisfaction, clinical markers and resource requirements are made for future studies.
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