-There is a limited choice of psychometric tests for Portuguese speaking people which have been evaluated in well defined groups. A Portuguese version of CERAD neuropsychological battery was applied to a control group of healthy elderly (CG) (mean age 75.1 years/ education 7.9 years), 31 Alzheimer disease (AD) patients classified by clinical dementia rating (CDR) as CDR1 (71.4/ 9.0) and 12 AD patients CDR 2 (74.1/ 9.3). Cut-off points were: verbal fluency-11; modified Boston naming-12; Mini-mental State Examination (MMSE) -26; word list memory-13; constructional praxis-9; word recall-3, word recognition-7; praxis recall-4. There was a significant difference between CG and AD-CDR1 (p<0.0001) for all tests. There was a less significant difference for constructional praxis and no difference for Boston naming. Comparison between AD-CDR1 and AD-CDR2 showed difference only for MMSE, verbal fluency, and Boston naming. The performance of CG was similar to that of a US control sample with comparable education level. These results indicate that this adaptation may be useful for the diagnosis of mild dementia but further studies are needed to define cut-offs for illiterates/ low education people.KEY WORDS: CERAD, neuropsychology, Alzheimer disease. Aplicabilidade da bateria neuropsicológica CERAD em idosos brasileirosRESUMO -Existem poucos instrumentos psicométricos em português aplicados em grupos bem definidos. Uma versão em português da bateria neuropsicológica CERAD foi aplicada a um grupo controle de 85 idosos saudáveis (GC) (média de idade 75,1/ média de educação 7,9), 31 indivíduos com doença de Alzheimer (DA) classificados pela Classificação Clínica para Demência (CDR) como CDR1 (71,4/ 9,0) e 12 indivíduos com DA CDR2 (74,1/ 9,3). Os pontos de corte foram: fluência verbal 11; teste de nomeação de Boston 12; MEEM 26; memória da lista de palavras 13; praxia construtiva 9; evocação de palavras 3; reconhecimento de palavras 7; evocação da praxia 4. Houve uma diferença significativa (p<0,0001) para todos os testes, exceto o de nomeação de Boston (p<0,368). A comparação entre AD-CDR1 e AD-CDR2 mostrou diferença apenas para o MEEM, fluência verbal e teste de nomeação de Boston. O desempenho do GC foi semelhante ao de uma população controle americana pareada para nível educacional. Estes resultados indicam que esta adaptação pode ser útil para o diagnóstico de demência inicial, mas estudos mais detalhados devem ser realizados para determinar os pontos de corte para pessoas analfabetas ou com baixa escolaridade. PALAVRAS-CHAVE: CERAD, avaliação neuropsicológica, doença de Alzheimer.
The cognitive subscale of the Alzheimers Disease Assessment Scale (ADAS-Cog) is widely used for the evaluation of dementia and is very popular in dementia drug trials because of the characteristics of the scale. The objective of the present study was to adapt the ADASCog for use for the Brazilian population. A major problem is that education is variable, a fact that may influence performance in cognitive evaluation. This study was conducted on a control group (CG) of 96 subjects (25 males and 71 females aged 68 ± 8.6 years) and on 44 Alzheimers disease (AD) patients (19 males and 25 females aged 72 ± 6.4 years) with mild dementia (Clinical Dementia Rating score 1). For statistical analysis groups were divided into three educational levels: I, 0-4 years of schooling (65 CG/20 AD); II, 5-11 years of schooling (19 CG/7 AD), and III, 12 or more years of schooling (12 CG/17 AD). The battery was applied according to original instructions. Total mean score for CG and AD was 10.9 and 22.9 for level I, 7.8 and 22.4 for level II, and 6.2 and 15.4 for level III, respectively. These results indicate that our version of the ADAS-Cog is useful to identify mild dementia, though there may be an overlapping when comparing high education demented with low education non-demented subjects.
Five refractory obsessive-compulsive patients were assessed using a neuropsychological battery after a modified gamma knife capsulotomy. The surgical technique was not associated with profound cognitive deficits. The authors found improvements in attention, vocabulary, learning, abstract reasoning, and memory.
-Dyslexia may be a development disturbance in which there are alterations in visual-spatial and visual-motor processing, while obsessive-compulsive disorder (OCD) is a psychiatric disease in which there are alterations in memory, executive function, and visual-spatial processing. Our hypothesis is that these disturbances may be, at least partially, the result of a crossed eye and hand preference. In the present study 16 controls, 20 OCD (DSM-IV criteria) and 13 dyslexic adults (Brazilian Dyslexia Association criteria) were included. All had a neurological examination, the Yale-Brown scale for obsessive-compulsive symptoms application and the Zazzó evaluation for laterality, abridged by Granjon. Results showed a right hand preference for 100% of controls, 84.6% of dyslexics, and 75% of OCD patients and a right eye preference for 73.3% of controls, 69.2% of dyslexics, and 35% of OCD patients. The left eye preference was significantly higher in OCD when compared with the two other groups (p = 0.01) and the left hand preference of OCD patients (25%) was also significant when compared to Brazilian population (4%) or British population (4.5%). It is possible that this crossed preference may be partially the reason for visual-spatial and constructive disturbances observed in OCD.KEY WORDS: obsessive-compulsive disorder, dyslexia, eye preference, laterality, handedness, procedural memory. Dissociação da preferência ocular e manual em pacientes com transtorno obsessivo-compulsivo e dislexiaRESUMO -A dislexia pode resultar de distúrbio do desenvolvimento e apresenta alterações no processamento visuo-espacial e visuo-motor, enquanto o transtorno obsessivo compulsivo (TOC) é uma alteração psiquiátrica na qual podem ocorrer alterações de memória, função executiva e visuo-espacial. Nossa hipótese é que parte destes distúrbios pode decorrer da preferência ocular e manual cruzadas. Foram avaliados 16 indivíduos normais, 20 pacientes com TOC, (critérios da DSM-IV) e 13 adultos disléxicos (critérios da Associação Brasileira de Dislexia). Todos passaram por exame neurológico, avaliação de sintomas obsessivos-compulsivos pela escala Yale-Brown e pela bateria para avaliação da lateralidade de Zazzó versão reduzida de Granjon. Os resultados mostraram a preferência pela mão direita de 84,6% nos disléxicos, 100% nos normais e 80% em TOC. A preferência ocular pelo olho direito foi de 69,2% nos disléxicos, 73,3% nos normais e apenas 35% nos TOC, com significância de p=0,01 quando comparada aos outros dois grupos.A preferência da mão esquerda pelo grupo de pacientes com TOC (25%) foi também significante quando comparada com os resultados da população brasileira em geral (4%) ou da população inglesa (4,5%). É possível que esta dominância cruzada seja responsável, em parte, pelas dificuldades visuo-espaciais e construcionais observadas no TOC. PALAVRAS-CHAVE: transtorno obsessivo compulsivo, dislexia, preferência ocular, lateralidade, preferência manual, memória procedural. Attention deficits and hyperactivity disorder (ADHD) in ch...
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