cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.14270379.v1
title: Posturographic analysis of older adults without dementia and patients with Alzheimer’s disease: A cross-sectional study

description: ABSTRACT. Additional clinical tools should be investigated to facilitate and aid the early diagnosis of cognitive decline. Postural control worsens with aging and this may be related to pathological cognitive impairment. Objective: to compare the balance of older adults without dementia in a control group (CG) and with Alzheimer’s disease (AD), to observe the possible association with the independent variables (diagnosis, age, gender, and global cognition) and to verify the best posturographic analyses to determine the difference between the groups. Methods: 86 older adults (AD = 48; CG = 38) were evaluated using the Berg Balance Scale (BBS) and postural control was assessed by stabilometry on the Wii Balance Board ® (WBB). Independent T, Mann-Whitney U-tests, Effect Size (ES) and a linear regression were performed. Results: there was a significant difference for Elliptical Area, Total Velocity, Medio-Lateral displacements with closed eyes and open eyes, antero-posterior, with closed eyes and BBS between groups. These variables showed a large effect size for BBS (-1.02), Elliptical Area (0.83) with closed eyes, Medio-Lateral (0.80, 0.96) and Total Velocity (0.92; 1.10) with eyes open and eyes closed, respectively. Regression indicated global cognition accompanied by age, gender, and diagnosis influenced postural control. Conclusion: patients with AD showed impaired postural control compared to Control Group subjects. Total Velocity with closed eyes was the most sensitive parameter for differentiating groups and should be better investigated as a possible motor biomarker of dementia in posturographic analysis with WBB.
DOI: 10.6084/m9.figshare.14327203
title: Assessment of functional health literacy in Brazilian carers of older people

description: ABSTRACT. Individuals with low health literacy have less knowledge of their own health condition. Carers play a key role in older people’s activities of daily living. Objective: to evaluate the performance of carers of older people using the S-TOFHLA (Short Test of Functional Health Literacy in Adults) and to identify caregiver characteristics associated with low functional health literacy. Methods: a cross-sectional study was conducted. The S-TOFHLA, a sociodemographic instrument, the Mini-Mental State Exam and the Patient Health Questionnaire-2 were applied to 80 carers of older patients routinely followed by doctors from the Primary Health Care Sector of the City of Botucatu, São Paulo. The multivariate analysis used an ordinal logistic regression model with test (S-TOFHLA) scores as the dependent variable. The level of statistical significance adopted was 0.05. Results: the individuals had a mean age of 54.6 (± 11.7); 27% of the carers evaluated had inadequate levels of health literacy (S-TOFHLA ≥54). A higher proportion of individuals with low education had inadequate or marginal health literacy (p&lt;0.001). Conclusion: nearly 1/3 of the carers had marginal or inadequate levels of health literacy. These results highlight the difficulties of many carers in understanding health information.
DOI: 10.6084/m9.figshare.14327203.v1
title: Assessment of functional health literacy in Brazilian carers of older people

description: ABSTRACT. Individuals with low health literacy have less knowledge of their own health condition. Carers play a key role in older people’s activities of daily living. Objective: to evaluate the performance of carers of older people using the S-TOFHLA (Short Test of Functional Health Literacy in Adults) and to identify caregiver characteristics associated with low functional health literacy. Methods: a cross-sectional study was conducted. The S-TOFHLA, a sociodemographic instrument, the Mini-Mental State Exam and the Patient Health Questionnaire-2 were applied to 80 carers of older patients routinely followed by doctors from the Primary Health Care Sector of the City of Botucatu, São Paulo. The multivariate analysis used an ordinal logistic regression model with test (S-TOFHLA) scores as the dependent variable. The level of statistical significance adopted was 0.05. Results: the individuals had a mean age of 54.6 (± 11.7); 27% of the carers evaluated had inadequate levels of health literacy (S-TOFHLA ≥54). A higher proportion of individuals with low education had inadequate or marginal health literacy (p&lt;0.001). Conclusion: nearly 1/3 of the carers had marginal or inadequate levels of health literacy. These results highlight the difficulties of many carers in understanding health information.
DOI: 10.6084/m9.figshare.14270760
title: Cut-off points of the Portuguese version of the Montreal Cognitive Assessment for cognitive evaluation in Parkinson’s disease

description: ABSTRACT. The Movement Disorder Society has published some recommendations for dementia diagnosis in Parkinson disease (PD), proposing the Montreal Cognitive Assessment (MOCA) as a cognitive screening tool in these patients. However, few studies have been conducted assessing the Portuguese version of this test in Brazil (MOCA-BR). Objective: the aim of the present study was to define the cut-off points of the MOCA-BR scale for diagnosing Mild Cognitive Impairment (PD-MCI) and Dementia (PD-D) in patients with PD. Methods: this was a cross-sectional, analytic field study based on a quantitative approach. Patients were selected after a consecutive assessment by a neurologist, after an extensive cognitive evaluation, and were classified as having normal cognition (PD-N), PD-MCI or PD-D. The MOCA-BR was then applied and 89 patients selected. Results: on the cognitive assessment, 30.3% were PD-N, 41.6% PD-MCI and 28.1% PD-D. The cut-off score on the MOCA-Br to distinguish PD-N from PD-D was 22.50 (95% CI 0.748-0.943) for sensitivity of 85.5% and specificity of 71.1%. The cut-off for distinguishing PD-D from MCI was 17.50 (95% CI 0.758-0.951) for sensitivity of 81.6% and specificity of 76%.
DOI: 10.6084/m9.figshare.14270760.v1
title: Cut-off points of the Portuguese version of the Montreal Cognitive Assessment for cognitive evaluation in Parkinson’s disease

description: ABSTRACT. The Movement Disorder Society has published some recommendations for dementia diagnosis in Parkinson disease (PD), proposing the Montreal Cognitive Assessment (MOCA) as a cognitive screening tool in these patients. However, few studies have been conducted assessing the Portuguese version of this test in Brazil (MOCA-BR). Objective: the aim of the present study was to define the cut-off points of the MOCA-BR scale for diagnosing Mild Cognitive Impairment (PD-MCI) and Dementia (PD-D) in patients with PD. Methods: this was a cross-sectional, analytic field study based on a quantitative approach. Patients were selected after a consecutive assessment by a neurologist, after an extensive cognitive evaluation, and were classified as having normal cognition (PD-N), PD-MCI or PD-D. The MOCA-BR was then applied and 89 patients selected. Results: on the cognitive assessment, 30.3% were PD-N, 41.6% PD-MCI and 28.1% PD-D. The cut-off score on the MOCA-Br to distinguish PD-N from PD-D was 22.50 (95% CI 0.748-0.943) for sensitivity of 85.5% and specificity of 71.1%. The cut-off for distinguishing PD-D from MCI was 17.50 (95% CI 0.758-0.951) for sensitivity of 81.6% and specificity of 76%.
DOI: 10.6084/m9.figshare.14270051
title: Narrative discourse in Persian-speaking patients with mild Alzheimer’s disease

description: ABSTRACT. Despite the significance of discourse impairments, they have not been thoroughly investigated in Persian-speaking patients with Alzheimer’s disease (AD). Objective: the aim of this study was to perform a multi-level analysis of narrative discourse in Persian-speaking patients with mild AD and to compare them with healthy elderly. Methods: the study included 14 older adults with mild AD and a matched group of 14 healthy elderly. Using a storytelling task based on serial pictures, both macro- and micro-linguistic aspects of narrative discourse were assessed. Cohesion ratio and coherence were investigated as macrolinguistic dimensions of discourse. The studied microlinguistic features included syntactic complexity and verbal errors (mostly involving phonological and semantic paraphasias and mazes). Severity of AD was determined using the Cognitive Dementia Rating (CDR). Results: there were significant differences between the groups regarding cohesion ratio (0.9 ± 0.34 vs. 1.29 ± 0.45, p = 0.02) and coherence scores (2.43 ± 0.41 vs. 3.02 ± 0.81, p = 0.03). Verbal errors and syntactic complexity did not differ significantly between the groups. Conclusion: Persian-speaking patients with mild AD show macrolinguistic impairments in producing discourses based on picture description. Therefore, intervention protocols should focus on the ability to organize information on a specific subject and also to connect sentences produced using appropriate cohesive ties.
DOI: 10.6084/m9.figshare.14270051.v1
title: Narrative discourse in Persian-speaking patients with mild Alzheimer’s disease

description: ABSTRACT. Despite the significance of discourse impairments, they have not been thoroughly investigated in Persian-speaking patients with Alzheimer’s disease (AD). Objective: the aim of this study was to perform a multi-level analysis of narrative discourse in Persian-speaking patients with mild AD and to compare them with healthy elderly. Methods: the study included 14 older adults with mild AD and a matched group of 14 healthy elderly. Using a storytelling task based on serial pictures, both macro- and micro-linguistic aspects of narrative discourse were assessed. Cohesion ratio and coherence were investigated as macrolinguistic dimensions of discourse. The studied microlinguistic features included syntactic complexity and verbal errors (mostly involving phonological and semantic paraphasias and mazes). Severity of AD was determined using the Cognitive Dementia Rating (CDR). Results: there were significant differences between the groups regarding cohesion ratio (0.9 ± 0.34 vs. 1.29 ± 0.45, p = 0.02) and coherence scores (2.43 ± 0.41 vs. 3.02 ± 0.81, p = 0.03). Verbal errors and syntactic complexity did not differ significantly between the groups. Conclusion: Persian-speaking patients with mild AD show macrolinguistic impairments in producing discourses based on picture description. Therefore, intervention protocols should focus on the ability to organize information on a specific subject and also to connect sentences produced using appropriate cohesive ties.
DOI: 10.6084/m9.figshare.14327204.v1
title: Discriminative validity of an abbreviated Semantic Verbal Fluency Test

description: ABSTRACT. Semantic verbal fluency (SVF) is one of the most widely used tests for cognitive assessment due to its diagnostic utility (DU). Objective: our objective is to evaluate the DU to detect cognitive impairment (CI) of a short version of the SVF applied in 30 seconds (SVF1-30). Methods: a prospective sample of consecutive patients evaluated in a Neurology Unit between December 2016 and December 2017 were assessed with the Global Deterioration Scale (GDS), 30-second and 60-second SVF tests (animals), and the Fototest, which includes a fluency task of people’s names. The DU for CI was evaluated by the area under the ROC curve and effect size (“d” Cohen). Results: the study included 1012 patients (256 with CI, 395 with dementia). SVF1-30 shows a good correlation with GDS stage. The DU of SVF1-30 is identical to that of the classical version, applied in 60 seconds, (SVFtotal) for CI (0.89 ± 0.01; p &gt; 0.50), and shows no significant difference for dementia (0.85 ± 0.01 vs. 0.86 ± 0.01, p &gt; 0.15). Discussion: the DU of SVF1-30 is similar to that of the SVFtotal, allowing a reduction in examination time with no loss of discriminative capacity.
DOI: 10.6084/m9.figshare.14327204
title: Discriminative validity of an abbreviated Semantic Verbal Fluency Test

description: ABSTRACT. Semantic verbal fluency (SVF) is one of the most widely used tests for cognitive assessment due to its diagnostic utility (DU). Objective: our objective is to evaluate the DU to detect cognitive impairment (CI) of a short version of the SVF applied in 30 seconds (SVF1-30). Methods: a prospective sample of consecutive patients evaluated in a Neurology Unit between December 2016 and December 2017 were assessed with the Global Deterioration Scale (GDS), 30-second and 60-second SVF tests (animals), and the Fototest, which includes a fluency task of people’s names. The DU for CI was evaluated by the area under the ROC curve and effect size (“d” Cohen). Results: the study included 1012 patients (256 with CI, 395 with dementia). SVF1-30 shows a good correlation with GDS stage. The DU of SVF1-30 is identical to that of the classical version, applied in 60 seconds, (SVFtotal) for CI (0.89 ± 0.01; p &gt; 0.50), and shows no significant difference for dementia (0.85 ± 0.01 vs. 0.86 ± 0.01, p &gt; 0.15). Discussion: the DU of SVF1-30 is similar to that of the SVFtotal, allowing a reduction in examination time with no loss of discriminative capacity.
DOI: 10.6084/m9.figshare.14268834
title: Neurocognitive study of school performance among Moroccan high school students: The role of working memory

description: ABSTRACT. The Moroccan school system suffers from recurring dysfunctions as reported by the National Evaluation Body (NEB). These results lead to the degradation of learning and academic performance, in which several factors come into play. In Morocco, studies focusing on the neurocognitive profile of students and its influence on school performance are very limited or rare. In this context, the present study aims to study the role of working memory in school performance among Moroccan high school students. Methods: our sample contains 146 high school students. A total of 78 boys and 68 girls participated in this study and the numerical version of The Rey-Osterrieth Complex Figure test (ROCF) was used to assess working memory. Moreover, school performance is represented in this study by the mean obtained during the first semester. Results: the results of multiple linear regression revealed that working memory significantly explains variation in school performance. Conclusion: neuropsychological abilities, particularly working memory, significantly explain the deterioration in school performance of students reported by the National Evaluation Body.
DOI: 10.6084/m9.figshare.14268834.v1
title: Neurocognitive study of school performance among Moroccan high school students: The role of working memory

description: ABSTRACT. The Moroccan school system suffers from recurring dysfunctions as reported by the National Evaluation Body (NEB). These results lead to the degradation of learning and academic performance, in which several factors come into play. In Morocco, studies focusing on the neurocognitive profile of students and its influence on school performance are very limited or rare. In this context, the present study aims to study the role of working memory in school performance among Moroccan high school students. Methods: our sample contains 146 high school students. A total of 78 boys and 68 girls participated in this study and the numerical version of The Rey-Osterrieth Complex Figure test (ROCF) was used to assess working memory. Moreover, school performance is represented in this study by the mean obtained during the first semester. Results: the results of multiple linear regression revealed that working memory significantly explains variation in school performance. Conclusion: neuropsychological abilities, particularly working memory, significantly explain the deterioration in school performance of students reported by the National Evaluation Body.
DOI: 10.6084/m9.figshare.14327207.v1
title: Limited formal education is strongly associated with lower cognitive status, functional disability and frailty status in older adults

description: ABSTRACT. Limited formal education is still common in ageing populations. Although limited formal education seems to be independently and negatively associated with cognition, functional abilities and frailty in ageing, no studies have examined whether the gradient of limited formal education has an impact on health in later life. Objective: to examine the relationship of limited formal education with cognitive status, functional abilities, and frailty status. Methods: a cross-sectional study was conducted involving 540 older adults stratified into groups: no formal education, 12-24 months of education, and 25-48 months of education. Cognitive screening (MMSE), functional abilities (Lawton Index), and frailty (CHS criteria) were measured. Regression analyses were performed. Results: 27% had no formal education, 21% had 12-24 months of formal education, and 55% had 25-48 months of formal education. Limited formal education has a clear gradient of negative impact: No formal education was associated with scoring below MMSE cut-off scores (OR = 7.9), being totally/partially dependent for IADLs (OR = 2.5) and frail (OR = 2.0). Having 12-24 months of education was associated with scoring below MMSE cut-off scores (OR = 5.2) and with being frail (OR = 2.0). The No formal education group was 10.1 times more likely to have worse cognitive scores, worse functional abilities and frailty/pre-frailty status concomitantly (CCoFF), while older adults who had 12-24 months of education had a 4.6 times greater chance of having CCoFF. Conclusion: limited education had a gradient association with cognitive performance, functional disability and frailty. These findings clearly emphasize the importance of prevention through education from childhood to older age.
DOI: 10.6084/m9.figshare.14327207
title: Limited formal education is strongly associated with lower cognitive status, functional disability and frailty status in older adults

description: ABSTRACT. Limited formal education is still common in ageing populations. Although limited formal education seems to be independently and negatively associated with cognition, functional abilities and frailty in ageing, no studies have examined whether the gradient of limited formal education has an impact on health in later life. Objective: to examine the relationship of limited formal education with cognitive status, functional abilities, and frailty status. Methods: a cross-sectional study was conducted involving 540 older adults stratified into groups: no formal education, 12-24 months of education, and 25-48 months of education. Cognitive screening (MMSE), functional abilities (Lawton Index), and frailty (CHS criteria) were measured. Regression analyses were performed. Results: 27% had no formal education, 21% had 12-24 months of formal education, and 55% had 25-48 months of formal education. Limited formal education has a clear gradient of negative impact: No formal education was associated with scoring below MMSE cut-off scores (OR = 7.9), being totally/partially dependent for IADLs (OR = 2.5) and frail (OR = 2.0). Having 12-24 months of education was associated with scoring below MMSE cut-off scores (OR = 5.2) and with being frail (OR = 2.0). The No formal education group was 10.1 times more likely to have worse cognitive scores, worse functional abilities and frailty/pre-frailty status concomitantly (CCoFF), while older adults who had 12-24 months of education had a 4.6 times greater chance of having CCoFF. Conclusion: limited education had a gradient association with cognitive performance, functional disability and frailty. These findings clearly emphasize the importance of prevention through education from childhood to older age.
DOI: 10.5519/qd.lauztzhb
title: Query on the Natural History Museum Data Portal (data.nhm.ac.uk) (867 records)
DOI: 10.6084/m9.figshare.9899834
title: Subjective cognitive impairment, cognitive disorders and self-perceived health: The importance of the informant

description: ABSTRACT There is great divergence of results in the literature regarding the clinical relevance and etiology of subjective cognitive impairment (SCI). Currently, SCI is studied as a pre-clinical symptom of Alzheimer's disease, before establishing a possible diagnosis of mild cognitive impairment (MCI). The hypothesis was that SCI is associated with low cognitive performance and poor self-perceived health. Objective: to investigate the relationship of SCI with objective cognitive impairment and self-perceived health in older individuals and to compare SCI reported by the elderly subjects and by their respective informants. Methods: 83 subjects participated in the study, divided between the forms of the Memory Complaint Scale (MCS). Cognition was evaluated by the Addenbrooke's Cognitive Examination - Revised and self-perceived health by the Short Form Health Survey-8. Results: there was no association between SCI and self-perceived health. SCI reported by the older adults was associated with executive functions. SCI reported by the informant was associated with overall cognitive performance, memory, verbal fluency and visuospatial functions. Conclusion: we found more robust results between SCI reported by the informant and cognitive impairment in the elderly assessed. There is a need to include and value the perception of someone who knows the older individual well enough to evaluate SCI globally.
DOI: 10.6084/m9.figshare.14327209.v1
title: Cerebral localization of higher functions: The period between Thomas Willis and Paul Broca

description: ABSTRACT. The age-old debates about the localization of the mind (higher functions) took a new course when Willis located a higher nervous function (memory) in the brain parenchyma, and supposedly, in the cerebral cortex. About two centuries later, Broca, founded on solid scientific reasoning, localized a circumscribed area of the 3rd frontal circumvolution of the left hemisphere as the seat of articulate language, a higher function (speech - language domain). He (and Dax) also defined the functional asymmetry (specialization) of the hemispheres, with left dominance (for language). The period between the findings of these individuals was not quiescent, as numerous authors contributed with their theoretical and clinicopathological research toward creating a conducive scientific atmosphere for this accomplishment, and should be regarded as important. Further studies, in the decades that followed, revealed the localization of additional aspects of language and of other higher functions (cognitive domains).
DOI: 10.6084/m9.figshare.9899990
title: Neuropsychology of the temporal lobe: Luria's and contemporary conceptions

description: ABSTRACT Brain lesion studies currently employ techniques such as computed tomography, functional magnetic resonance imaging, single photon emission tomography and positron emission tomography. Famous neuropsychologist Alexander Romanovich Luria’s studies on cognition were conducted without the use of imaging technology for many years, in a large number of patients with brain lesions, and explored complex behavior and specific brain functions involving the lobes and subareas. For instance, he carried out several specific studies on memory and mental organization, reported in his books. The objective of this study is to associate recent studies in neuropsychology with Luria’s work specifically on the temporal lobe. According to the data studied, Luria’s epistemological foundation remains the basis for neuropsychological studies today, but new data on the temporal lobe in relation to epilepsy and hippocampus analysis have been introduced into the scope of neuropsychology. This study focuses on earlier data from Luria’s studies on the neuropsychological functions of the temporal lobe, comparing these with more recent data. However, in order to improve clinical aspects, a detailed study on the neuropsychological tests used for the temporal lobe should be performed.