ABSTRACT
Objective:To explore the characteristics and differences of oxygenated hemoglobin responses in different brain regions in adolescent depressive disorder patients and healthy adolescents during speech fluency task based on functional near-infrared spectroscopy imaging.Methods:From March 2021 to June 2021, twenty-nine adolescents with depression(depressed group) and 26 healthy adolescents(normal group) were enrolled. The severity of depression was assessed by Hamilton depression scale, and the speech fluency task was performed by functional near-infrared spectroscopy brain imaging, and the relative concentrations of oxyhemoglobin in the prefrontal and bilateral temporal lobes were measured.SPSS 26.0 statistical software was used for data analysis, chi-square test was used for gender count data. The t-test was used for comparison of two groups. The measurement data that did not conform to normal distribution were compared between the two groups by Mann-Whitney U test. Results:In the speech fluency task, there was no significant difference in the concentration of oxygenated hemoglobin in prefrontal and left temporal between the depressed group and the normal group (both P>0.05); the oxygenated hemoglobin concentration in the right temporal lobe(-9.179(-22.231, 4.789)) of depressed group was significantly lower than that of the normal group (12.754(-9.438, 35.008)), and the difference was statistically significant ( U=538.00, P<0.05). The oxygenated hemoglobin concentration in right temporal lobe of depressed group had no correlation with the score of Hamilton depression rating scale ( r=0.092, P>0.05). Conclusion:The right temporal lobe function of adolescent depression patients is lower than that of healthy controls during speech fluency tasks, which provides a basis for study of the relationship between depression and some cognitive sensitivity impairment and the function of right temporal lobe.
ABSTRACT
Objective To explore the sensitivity and specificity of near-infrared spectroscopy ( NIRS) in the diagnosis of depression. Methods From March 2013 to August 2013,62 patients with de-pression and 70 normal controls were collected from Peking University Sixth Hospital. Optical Tomography System (52 channels) was used to collect the NIRS data during the Verbal Fluency Test (VFT),and the number of words produced during VFT task was recorded. The wave analysis was performed by a professional psychiatrist. Results There was statistical difference in the number of words produced during VFT task be-tween the patients with depression (8.65±0.49)and control group(10.19±0.43) ( t=2.385, P<0.05). Through the wave analysis of NIRS to test patients with depression,the results demonstrated that the sensitivi-ty was 66.1% and the specificity was 91.4%. Conclusion The results of NIRS test display high specificity in the diagnosis of depression,which can be used as an objective index for clinical auxiliary diagnosis.
ABSTRACT
We compared the performance of 31 non-demented Parkinson´s disease (PD) patients to 61 healthy controls in an action verbal fluency task. Semantic and phonemic fluencies, cognitive impairment and behavioural dysfunction were also assessed. The mean disease duration of PD was 9.8 years (standard deviation (SD) = 6.13). There were no age (U = 899.5, p = 0.616), gender(chi-square = 0.00, p = 1.00) or literacy (U = 956, p = 0.96) differences between the two groups. A significant difference was observed between the two groups in the action verbal fluency task (U = 406.5, p < 0.01) that was not found in the other fluency tasks. The education level was the only biographical variable that influenced the action (verb) fluency outcomes, irrespective of disease duration. Our findings suggest a correlation between the disease mechanisms in PD and a specific verb deficit, support the validity of the action (verb) fluency as an executive function measure and suggest that this task provides unique information not captured with traditional executive function tasks.
Este estudo comparou o desempenho em provas de fluência verbal semântica, fonêmica e de ação, em 31 pacientes com doença de Parkinson (DP), sem demência, e 61 controlos saudáveis. As funções executivas e comportamentais foram igualmente avaliadas. O tempo de evolução foi de 9,8 anos (DP = 6,13). Não foram encontradas diferenças de idade (U = 899,5, p = 0,616), género (X2 = 0,00, p = 1,00) ou literacia (U = 956, p = 0,96) entre os dois grupos. Diferenças significativas foram encontradas na prova de fluência verbal de ação (U = 406,5, p < 0,01) que não se verificaram nas restantes provas. O nível educacional foi a única variável biográfica que influenciou o desempenho das tarefas, independentemente do tempo de evolução da doença. Os resultados sugerem uma correlação entre os mecanismos patológicos da DP e um déficit específico para a evocação de verbos e que a prova de fluência de ação providencia uma informação importante que não é detectada pelos restantes testes executivos.
Subject(s)
Aged , Female , Humans , Male , Middle Aged , Parkinson Disease/physiopathology , Speech Disorders/physiopathology , Verbal Behavior/physiology , Age Factors , Case-Control Studies , Educational Status , Executive Function/physiology , Neuropsychological Tests , Reference Values , Semantics , Sex Factors , Statistics, Nonparametric , Time FactorsABSTRACT
Verbal Fluency Tests (VFT) are commonly used to assess executive functions and language in clinical and epidemiological studies. These tests were included to access cognitive function and predictors to its decline in ELSA-Brasil (Longitudinal Study of Adults' Health), a cohort that investigates incidence and predictors of chronic diseases among 15,000 civil servants from six public educational institutions. OBJECTIVE: To investigate the reliability of VFT scoring by supervisors of. ELSA research centers, who independently judged 120 category (animals) and 120 phonemic (F letter) tests. METHOD: Their scores were compared to a reference standard score obtained by independent judgment of two experts. Intraclass correlation coefficient ratings reliability and Bland-Altman plot examined patterns of ratings disagreement. RESULTS: Scores were very similar among ELSA centers and a high level of agreement was observed between each center and the reference standard. CONCLUSION: The high consistency of VFT scores confirms reliability and validity of the test and assures quality for its use in multicenter studies.
INTRODUÇÃO: Testes de fluência verbal (TFV) são muito utilizados para verificação de linguagem e função executiva em estudos clínico-epidemiológicos. Estes testes foram incluídos no ELSA-Brasil (Estudo Longitudinal de Saúde do Adulto), coorte que investiga incidência e fatores prognósticos de doenças crônicas em 15.000 servidores públicos de seis instituições de ensino. OBJETIVO: Investigar concordância dos escores dos TFV aferidos por supervisores dos centros de pesquisa, que interpretaram independentemente 120 TFV para categorias (animais) e 120 TFV fonêmica (letra F). MÉTODO: Os escores foram comparados a padrão-referência, definido por julgamento independente de dois especialistas. O índice de correlação intraclasse mediu concordância entre os escores e o gráfico de Bland-Altman espelhou padrões de discordância. RESULTADOS: Os escores foram muito similares, com alto grau de concordância entre cada centro e o padrão-referência. CONCLUSÃO: A alta consistência dos escores revela importância de mecanismos de garantia de qualidade e normatização em estudos multicêntricos e permite ao ELSA avançar na investigação cognitiva.
Subject(s)
Humans , Neuropsychological Tests/standards , Verbal Behavior/physiology , Observer Variation , Reproducibility of ResultsABSTRACT
@#Objective To evaluate the cognitive impairment and the related factors in patients after first lacunar infarct （LI）. Methods96 patients with LI and 40 controls were assessed with mini-mental state examination（MMSE）, digit span test （DST）, verbal fluency test （VFT）and clock drawing test （CDT）. ResultsThe scores of MMSE, DST, VFT and CDT were significantly lower in LI group than in control group (P＜0.05). Cognitive impairment occurred in 37 (38.5%) patients with LI after first stroke. The scores of MMSE, DST, VFT and CDT were lower in the patients with multiple infarcts than with single infarct (P＜0.05), and lower in patients with infarcts affecting the frontal lobe, thalamus and basal ganglia than affecting other area (P＜0.05). The scores of MMSE were lower in the patients with prior vascular risk factors than without risk factors (P＜0.05). ConclusionLacunar infarction usually leads to cognitive impairment. Cognitive function is associated with multiple infarcts, lesions affecting the frontal lobe, thalamus and basal ganglia and those with prior vascular risk factors.