Semantic memory: nouns and action verbs in cognitively unimpaired individuals and frontotemporal lobar degeneration
Memória semântica: substantivos e verbos de ação em indivíduos sem distúrbios cognitivos e pacientes com degeneração lobar frontotemporal
Dement. neuropsychol; 7 (1), 2013
Publication year: 2013
ABSTRACT. Among the instruments to evaluate semantic memory, the Pyramids and Palm Trees (PPT) and the Kissing andDancing (KDT) tests are widely used but none have a performance referential for cognitively normal and impaired Brazilianpopulations.
Objective:
[A] To study these two tests in a sample of young healthy Brazilian individuals living in São Paulo;[B] To apply the results to the evaluation of two cases diagnosed with frontotemporal lobar degeneration.Methods:
Weevaluated 50 normal participants (41 females and 9 males) aged between 20-63 years, with schooling level of 14-20 years.In addition, two individuals diagnosed with frontotemporal lobar degeneration were examined, one with behavioral-variantfrontotemporal dementia and the other with semantic dementia.Results:
On the two tests, no effects of age, gender andschooling on the performance of normal individuals were observed. According to the performance of the sample of controls,scores below 46 points on the PPT and below 47 on the KDT are suggestive of deficits in semantic memory. The analysesof both cases indicated double dissociation in establishing associations between nouns and action verbs. Although the twopatients had low scores on both tests, the patient with behavioral-variant frontotemporal dementia performed better on thePPT compared to the KDT, while the patient with semantic dementia showed the reverse, performing better on the KDT.Conclusion:
The PPT and KDT are suitable tests for use in the Brazilian population, with minimal need for adjustments.They are applicable tools both for cognitive assessment and research in semantic memory. In the present study, we obtainedrepresentative values of performance for cognitively unimpaired individuals and demonstrated the utility of these instrumentsfor cognitive assessment of patients with FTLD.
RESUMO. Entre os instrumentos dirigidos à avaliação da memória semântica, temos os testes Pirâmides e Palmeiras(Pyramids and Palm Trees - PPT) e o Beijando e Dançando (Kissing and Dancing - KDT), para os quais não existemreferências de desempenho de população brasileira normal e patológica.