cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7941641.v1
title: Cognitive reserve and dementia A scientometric review

description: ABSTRACT. Research into cognitive reserve (CR) and dementia is advancing rapidly. This paper analyses the intellectual structure, emerging trends and relevant shifts in the development of available knowledge. Data collected from the Web-of-Science produced an expanded network of 564 articles and 12,504 citations in the 1998-2017 period. The co-citation network visualized was characterized by a scientometric review using CiteSpace. The results revealed that author Stern Y had the highest number of publications and citations. The network of journals, institutions and countries showed a central-peripheral structure with Neurology, Harvard University and the USA ranked first, respectively. While cognitive reserve remains the most prominent area of research in this field, studies related to functional ability, executive control, mortality data and reserve mechanisms have grown considerably. The identification of critical articles and the development of emerging trends highlights new insights in the area of research, better communicating key findings and facilitating the exploration of data.
DOI: 10.6084/m9.figshare.7941641
title: Cognitive reserve and dementia A scientometric review

description: ABSTRACT. Research into cognitive reserve (CR) and dementia is advancing rapidly. This paper analyses the intellectual structure, emerging trends and relevant shifts in the development of available knowledge. Data collected from the Web-of-Science produced an expanded network of 564 articles and 12,504 citations in the 1998-2017 period. The co-citation network visualized was characterized by a scientometric review using CiteSpace. The results revealed that author Stern Y had the highest number of publications and citations. The network of journals, institutions and countries showed a central-peripheral structure with Neurology, Harvard University and the USA ranked first, respectively. While cognitive reserve remains the most prominent area of research in this field, studies related to functional ability, executive control, mortality data and reserve mechanisms have grown considerably. The identification of critical articles and the development of emerging trends highlights new insights in the area of research, better communicating key findings and facilitating the exploration of data.
DOI: 10.6084/m9.figshare.7941878.v1
title: Memory for emotional information and alexithymia A systematic review

description: ABSTRACT. Alexithymia is a deficit in the recognition, expression and regulation of emotions, which has the following features: difficulty in identifying or describing feelings, difficulty distinguishing between feelings and bodily sensations, stringent imaginal processes, and externally oriented cognitive style. This personality trait is associated with many psychiatric and psychosomatic disorders, as well as with risky behaviors. Objective: To investigate whether this trait is also associated with reduced memory for emotional information. Methods: A review of articles investigating the possible damage caused by alexithymia to implicit and explicit memory for emotional information was conducted. Results: Although the studies concerning implicit memory presented divergent results, most studies on explicit memory suggested a deficit for emotional information retention in high-alexithymia individuals. Conclusion: The reviewed data support the notion that the typical increase in episodic memory for emotional information is reduced in high-alexithymia individuals.
DOI: 10.6084/m9.figshare.7941449
title: Psychometric properties of cognitive screening for patients with cerebrovascular diseases A systematic review

description: ABSTRACT. Screening instruments are ideal for acute clinical settings because they are easy to apply, fast, inexpensive and sensitive for specific samples. However, there is a need to verify the psychometric properties of screening in stroke patients. Objective: This study investigated the psychometric properties (methodological procedures) of cognitive screening for patients with cerebrovascular diseases. Methods: A systematic review of papers published on PsycINFO, Web of Knowledge, PubMed and Science Direct (2005 to 2016) was performed. Results: A total of 55 articles remained after applying exclusion criteria. The samples ranged from 20 to 657 patients. Most articles evaluated elderly individuals with four to 13 years of education who had experienced ischemic or hemorrhagic stroke. There was a tendency to find evidence of validity for criteria and to analyze the sensitivity/specificity of the instruments. Although the studies frequently used the Mini-Mental State Examination (MMSE) and the Montreal Cognitive Assessment (MoCA) to seek evidence of validity and reliability, the use of these instruments among stroke patients has been criticized due to their psychometric properties and the neuropsychological functions evaluated. Conclusion: Although there is no gold standard screen for assessing adults post-stroke, instruments devised specifically for this population have shown promise. This review helps both researchers and clinicians to select the most appropriate screen for identifying cognitive impairment in adults post-stroke.
DOI: 10.6084/m9.figshare.7941878
title: Memory for emotional information and alexithymia A systematic review

description: ABSTRACT. Alexithymia is a deficit in the recognition, expression and regulation of emotions, which has the following features: difficulty in identifying or describing feelings, difficulty distinguishing between feelings and bodily sensations, stringent imaginal processes, and externally oriented cognitive style. This personality trait is associated with many psychiatric and psychosomatic disorders, as well as with risky behaviors. Objective: To investigate whether this trait is also associated with reduced memory for emotional information. Methods: A review of articles investigating the possible damage caused by alexithymia to implicit and explicit memory for emotional information was conducted. Results: Although the studies concerning implicit memory presented divergent results, most studies on explicit memory suggested a deficit for emotional information retention in high-alexithymia individuals. Conclusion: The reviewed data support the notion that the typical increase in episodic memory for emotional information is reduced in high-alexithymia individuals.
DOI: 10.6084/m9.figshare.7941449.v1
title: Psychometric properties of cognitive screening for patients with cerebrovascular diseases A systematic review

description: ABSTRACT. Screening instruments are ideal for acute clinical settings because they are easy to apply, fast, inexpensive and sensitive for specific samples. However, there is a need to verify the psychometric properties of screening in stroke patients. Objective: This study investigated the psychometric properties (methodological procedures) of cognitive screening for patients with cerebrovascular diseases. Methods: A systematic review of papers published on PsycINFO, Web of Knowledge, PubMed and Science Direct (2005 to 2016) was performed. Results: A total of 55 articles remained after applying exclusion criteria. The samples ranged from 20 to 657 patients. Most articles evaluated elderly individuals with four to 13 years of education who had experienced ischemic or hemorrhagic stroke. There was a tendency to find evidence of validity for criteria and to analyze the sensitivity/specificity of the instruments. Although the studies frequently used the Mini-Mental State Examination (MMSE) and the Montreal Cognitive Assessment (MoCA) to seek evidence of validity and reliability, the use of these instruments among stroke patients has been criticized due to their psychometric properties and the neuropsychological functions evaluated. Conclusion: Although there is no gold standard screen for assessing adults post-stroke, instruments devised specifically for this population have shown promise. This review helps both researchers and clinicians to select the most appropriate screen for identifying cognitive impairment in adults post-stroke.
DOI: 10.6084/m9.figshare.7941599
title: Variables associated with speech and language therapy time for aphasia, apraxia of speech and dysarthria

description: ABSTRACT. The most common acquired communication disorders are aphasia, dysarthria and apraxia of speech. Determining the factors associated with speech therapy time of adults with these disorders can further the understanding of the speech and language rehabilitation process within the public service and linked to the health education process. Objective: To analyze the types of acquired neurological disorders of communication of patients treated during the first years of implementation of a medium complexity service, along with demographic data, and rehabilitation time; and to determine associations between rehabilitation time and age, education, type of communication disorder, neurological disease duration and having been seen by a trainee. Methods: A retrospective analysis of the records of patients with acquired neurological disorders of communication who started speech and language rehabilitation between 2010 and 2011 was performed. Results: A total of 86 cases with acquired disorders of communication were seen, of whom 66% had aphasia, 35% dysarthria and 26% apraxia of speech. Mean age was 59 years and stroke was the most frequent cause (71%). Fifty patients completed speech-language rehabilitation and had a mean therapy time of 12 months. Aphasia and apraxia of speech were associated with a longer rehabilitation time. Therapy time until discharge was not significantly associated with lesion duration, education, age or being seen by a trainee. Conclusion: The duration of speech therapy for acquired neurological disorders of communication is long and associated with the type of disorder.
DOI: 10.6084/m9.figshare.7941599.v1
title: Variables associated with speech and language therapy time for aphasia, apraxia of speech and dysarthria

description: ABSTRACT. The most common acquired communication disorders are aphasia, dysarthria and apraxia of speech. Determining the factors associated with speech therapy time of adults with these disorders can further the understanding of the speech and language rehabilitation process within the public service and linked to the health education process. Objective: To analyze the types of acquired neurological disorders of communication of patients treated during the first years of implementation of a medium complexity service, along with demographic data, and rehabilitation time; and to determine associations between rehabilitation time and age, education, type of communication disorder, neurological disease duration and having been seen by a trainee. Methods: A retrospective analysis of the records of patients with acquired neurological disorders of communication who started speech and language rehabilitation between 2010 and 2011 was performed. Results: A total of 86 cases with acquired disorders of communication were seen, of whom 66% had aphasia, 35% dysarthria and 26% apraxia of speech. Mean age was 59 years and stroke was the most frequent cause (71%). Fifty patients completed speech-language rehabilitation and had a mean therapy time of 12 months. Aphasia and apraxia of speech were associated with a longer rehabilitation time. Therapy time until discharge was not significantly associated with lesion duration, education, age or being seen by a trainee. Conclusion: The duration of speech therapy for acquired neurological disorders of communication is long and associated with the type of disorder.
DOI: 10.6084/m9.figshare.7941911.v1
title: Age-related differences in conversational discourse abilities A comparative study

description: ABSTRACT. Conversational discourse (CD) is among the most complex tasks in everyday life and relies on multiple cognitive domains (communicative and executive abilities). Alterations in discourse comprehension and production are often present in pathological aging. However, there is still a need to identify changes in healthy aging. Objective: This study aimed to compare young and older adults for the frequency of impaired communicative behaviors on a CD task. Performance was scored according to the Complementary Procedure of Conversational Discourse Analysis (CPCDA), developed based on the CD task from the Montreal Communication Evaluation Battery. Methods: A total of 95 participants (54 young-adults and 41 older adults) were evaluated. The frequency of communicative behaviors was compared between groups using MANCOVA and Chi-square tests. Results: Young adults showed fewer impairments in expression, pragmatics, cohesion, coherence, comprehension and emotional prosody. Older adults showed higher levels of verbal initiative and had fewer word finding difficulties. Communicative behaviors associated with planning and self-monitoring (e.g. repetition of information and syllabic false starts) appear to be common in the speech of healthy individuals in general. Conclusion: Studies which evaluate both discursive and cognitive skills are required to identify age-related changes. This would allow for the development of screening tools for CD assessment and preventive programs.
DOI: 10.6084/m9.figshare.7941911
title: Age-related differences in conversational discourse abilities A comparative study

description: ABSTRACT. Conversational discourse (CD) is among the most complex tasks in everyday life and relies on multiple cognitive domains (communicative and executive abilities). Alterations in discourse comprehension and production are often present in pathological aging. However, there is still a need to identify changes in healthy aging. Objective: This study aimed to compare young and older adults for the frequency of impaired communicative behaviors on a CD task. Performance was scored according to the Complementary Procedure of Conversational Discourse Analysis (CPCDA), developed based on the CD task from the Montreal Communication Evaluation Battery. Methods: A total of 95 participants (54 young-adults and 41 older adults) were evaluated. The frequency of communicative behaviors was compared between groups using MANCOVA and Chi-square tests. Results: Young adults showed fewer impairments in expression, pragmatics, cohesion, coherence, comprehension and emotional prosody. Older adults showed higher levels of verbal initiative and had fewer word finding difficulties. Communicative behaviors associated with planning and self-monitoring (e.g. repetition of information and syllabic false starts) appear to be common in the speech of healthy individuals in general. Conclusion: Studies which evaluate both discursive and cognitive skills are required to identify age-related changes. This would allow for the development of screening tools for CD assessment and preventive programs.
DOI: 10.6084/m9.figshare.7941260
title: Montreal Cognitive Assessment scale in patients with Parkinson Disease with normal scores in the Mini-Mental State Examination

description: ABSTRACT. Several screening tests have been used for cognitive evaluation in Parkinson’s disease (PD). Objective: To evaluate the usefulness of the Montreal Cognitive Assessment (MoCA) in patients with Parkinson’s disease and no cognitive impairment complaints. Methods: A total of 40 PD patients with no complaints of cognitive problems were included. Patients were selected using the Mini-Mental State Examination (MMSE) and the MoCA was then administered. Results: 80% of patients exhibited Mild Cognitive Impairment (MCI) according to the MoCA. Statistically significant differences in visuospatial, attention and delayed recall functions were evident between the normal and abnormal MoCA groups. Conclusion: The study results suggest that MoCA may be a good screening test in patients with PD who do not present cognitive complaints.
DOI: 10.6084/m9.figshare.7941260.v1
title: Montreal Cognitive Assessment scale in patients with Parkinson Disease with normal scores in the Mini-Mental State Examination

description: ABSTRACT. Several screening tests have been used for cognitive evaluation in Parkinson’s disease (PD). Objective: To evaluate the usefulness of the Montreal Cognitive Assessment (MoCA) in patients with Parkinson’s disease and no cognitive impairment complaints. Methods: A total of 40 PD patients with no complaints of cognitive problems were included. Patients were selected using the Mini-Mental State Examination (MMSE) and the MoCA was then administered. Results: 80% of patients exhibited Mild Cognitive Impairment (MCI) according to the MoCA. Statistically significant differences in visuospatial, attention and delayed recall functions were evident between the normal and abnormal MoCA groups. Conclusion: The study results suggest that MoCA may be a good screening test in patients with PD who do not present cognitive complaints.
DOI: 10.6084/m9.figshare.7942118
title: Validation of the Catherine Bergego Scale in patients with unilateral spatial neglect after stroke

description: ABSTRACT. The Catherine Bergego Scale (CBS) is a scale to evaluates the impact of unilateral spatial neglect (USN) on everyday life of patients after stroke. Objective: The aim of this study was to evaluate the reliability and comprehension of the Portuguese version of the CBS for patients with USN after stroke. Methods: This was a cross-sectional study in patients with stroke and USN. The CBS was translated, culturally adapted and applied by two independent investigators. The patients were also evaluated by the Behavioural Inattention Test (BIT), NIHSS, mRS and Barthel scale to assess USN severity, neurological function, disability and autonomy consecutively. Consistency and coherence were analysed using Cronbach’s α, inter-observer reliability by Kappa, and the correlation between the CBS, BIT, NIHSS, mRS, and Barthel was determined using Pearson correlation. Results: Twenty-two patients were evaluated and the observed Cronbach’s α=0.913. For intra-observer reproducibility, the 10 items showed a reasonable and high reliability between evaluators. The CBS showed a negative correlation with the BIT. There was a low correlation between the BIT and NIHSS, mRS and Barthel index. Conclusion: The CBS is an adequate and validated scale for assessing patients with USN after stroke in a Brazilian population.
DOI: 10.6084/m9.figshare.7942118.v1
title: Validation of the Catherine Bergego Scale in patients with unilateral spatial neglect after stroke

description: ABSTRACT. The Catherine Bergego Scale (CBS) is a scale to evaluates the impact of unilateral spatial neglect (USN) on everyday life of patients after stroke. Objective: The aim of this study was to evaluate the reliability and comprehension of the Portuguese version of the CBS for patients with USN after stroke. Methods: This was a cross-sectional study in patients with stroke and USN. The CBS was translated, culturally adapted and applied by two independent investigators. The patients were also evaluated by the Behavioural Inattention Test (BIT), NIHSS, mRS and Barthel scale to assess USN severity, neurological function, disability and autonomy consecutively. Consistency and coherence were analysed using Cronbach’s α, inter-observer reliability by Kappa, and the correlation between the CBS, BIT, NIHSS, mRS, and Barthel was determined using Pearson correlation. Results: Twenty-two patients were evaluated and the observed Cronbach’s α=0.913. For intra-observer reproducibility, the 10 items showed a reasonable and high reliability between evaluators. The CBS showed a negative correlation with the BIT. There was a low correlation between the BIT and NIHSS, mRS and Barthel index. Conclusion: The CBS is an adequate and validated scale for assessing patients with USN after stroke in a Brazilian population.
DOI: 10.6084/m9.figshare.7941629
title: Association among 2-min step test, functional level and diagnosis of dementia

description: ABSTRACT. Aerobic capacity declines significantly throughout life, beginning at the age of 30 years and accelerating from 60 years, where a decline of 17% per decade is expected thereafter. Objective: To investigate the association between aerobic capacity and a diagnosis of mild cognitive impairment (MCI), mild AD or moderate AD in older adults, considering the risk classification of functional loss of the Step test. Methods: In this cross-sectional study, 93 patients (age &gt;60 years) were evaluated (Healthy=36; MCI=18, AD=39). The step test was used to assess aerobic capacity, while overall cognitive status was measured using the MMSE. The groups were divided according to the risk classifications of functional loss into below or above the standard cut-off point for aerobic capacity. Results: Subjects in the functional loss risk group were approximately ten to fourteen times more likely to be diagnosed with mild (OR:10.7; p=0.001) or moderate (OR.=14.7; p=0.002) AD than their fitter counterparts. Low aerobic fitness was also associated with the MCI condition (OR=4.5; p=0.05), but only after controlling for educational level, age and sex. In the overall sample (N=93), there was an association between aerobic capacity and MMSE performance (R2=0.35; p&lt;0.001) after controlling for confounding variables. Conclusion: low aerobic capacity was associated with cognitive decline, and older adults at risk of functional loss on the STEP test had greater chance of being diagnosed with MCI or AD after controlling for age, sex and education.
DOI: 10.6084/m9.figshare.7941629.v1
title: Association among 2-min step test, functional level and diagnosis of dementia

description: ABSTRACT. Aerobic capacity declines significantly throughout life, beginning at the age of 30 years and accelerating from 60 years, where a decline of 17% per decade is expected thereafter. Objective: To investigate the association between aerobic capacity and a diagnosis of mild cognitive impairment (MCI), mild AD or moderate AD in older adults, considering the risk classification of functional loss of the Step test. Methods: In this cross-sectional study, 93 patients (age &gt;60 years) were evaluated (Healthy=36; MCI=18, AD=39). The step test was used to assess aerobic capacity, while overall cognitive status was measured using the MMSE. The groups were divided according to the risk classifications of functional loss into below or above the standard cut-off point for aerobic capacity. Results: Subjects in the functional loss risk group were approximately ten to fourteen times more likely to be diagnosed with mild (OR:10.7; p=0.001) or moderate (OR.=14.7; p=0.002) AD than their fitter counterparts. Low aerobic fitness was also associated with the MCI condition (OR=4.5; p=0.05), but only after controlling for educational level, age and sex. In the overall sample (N=93), there was an association between aerobic capacity and MMSE performance (R2=0.35; p&lt;0.001) after controlling for confounding variables. Conclusion: low aerobic capacity was associated with cognitive decline, and older adults at risk of functional loss on the STEP test had greater chance of being diagnosed with MCI or AD after controlling for age, sex and education.