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Memória de dor induzida em laboratório em indivíduos saudáveis : relação com o desempenho em provas neuropsicológicas de memória verbal
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Objetivo: Nos últimos anos tem sido sugerido que a memória das experiências passadas de dor tem um impacto importante nas experiências de dor subsequentes e está associado ao risco de desenvolver dor crónica. Este estudo de carácter exploratório teve como objetivo investigar os fatores que contribuem para a recordação de um episódio de dor induzida em indivíduos saudáveis. Método: Os participantes foram sujeitos a 3 momentos de avaliação. 1) sessão de laboratório onde foram aplicados os questionários (STAI, PCS e LOT-R) que mediram as suas características psicológicas, e o CPT. 2) Cerca de 18 dias depois, foram solicitados a recordar a intensidade máxima sentida durante o primeiro CPT. 3) sessão de laboratório onde foram sujeitos a provas neuropsicológicas de memória (Memória de Dígitos e CVLT), juntamente com uma última aplicação do CPT. Resultados: 64 participantes completaram o estudo. Foram encontradas diferenças significativas entre a intensidade máxima da dor sentida no CPT e a recordação dessa dor. Estas diferenças não se correlacionam com as pontuações nos questionários de ansiedade, otimismo e catastrofização, mas sim com os resultados das provas neuropsicológicas de memória. Verificou-se uma correlação entre a recordação e a memória de dígitos de ordem inversa, sugerindo que uma melhor recordação do CPT estava associada a pior desempenho na memória de trabalho, mas a um melhor desempenho na capacidade de retenção de informação de longo prazo. Conclusão: Ainda que se reconheça a importância das experiências de dor prévias na dor, são poucos os estudos sobre memória de dor induzida em população não clínica. Este estudo poderá contribuir para uma melhor compreensão acerca dos fatores que influenciam a capacidade de se memorizar estes acontecimentos, destacando o papel que deve ser estudado no futuro em maior detalhe acerca da relação entre as competências de memória verbal e a recordação de um evento doloroso.
Objective: In recent years it has been suggested that the memory of past pain experiences has an important impact on subsequent pain experiences and is associated with the risk of developing chronic pain. This exploratory study aimed to investigate the factors that contribute to the recall of an episode of induced pain in healthy individuals. Method: The participants underwent 3 evaluation moments, 1) a laboratory session where the questionnaires (STAI, PCS and LOT-R) that measured their psychological characteristics and the CPT were applied. 2) About 18 days later, they were asked to recall the maximum intensity felt during the first CPT. 3) laboratory session where they were subjected to neuropsychological memory tests (Digit Memory and CVLT), along with a final application of the CPT. Results: 64 participants completed the study. Significant differences were found between the maximum intensity of pain felt in the CPT and the recall of that pain. These differences did not correlate with the scores on the anxiety, optimism and catastrophizing questionnaires, but with the results of the neuropsychological memory tests. There was a correlation between recall and reverse-order digit memory, suggesting that better recall of CPT was associated with poorer performance in working memory, but better performance in the ability to retain long-term information. Discussion: Although the importance of previous pain experiences in pain is recognized, there are few studies on memory of induced pain in non-clinical populations. This study could contribute to a better understanding of the factors that influence the ability to remember these events, highlighting the role that should be studied in greater detail in the future regarding the relationship between verbal memory skills and the recall of a painful event.
Objective: In recent years it has been suggested that the memory of past pain experiences has an important impact on subsequent pain experiences and is associated with the risk of developing chronic pain. This exploratory study aimed to investigate the factors that contribute to the recall of an episode of induced pain in healthy individuals. Method: The participants underwent 3 evaluation moments, 1) a laboratory session where the questionnaires (STAI, PCS and LOT-R) that measured their psychological characteristics and the CPT were applied. 2) About 18 days later, they were asked to recall the maximum intensity felt during the first CPT. 3) laboratory session where they were subjected to neuropsychological memory tests (Digit Memory and CVLT), along with a final application of the CPT. Results: 64 participants completed the study. Significant differences were found between the maximum intensity of pain felt in the CPT and the recall of that pain. These differences did not correlate with the scores on the anxiety, optimism and catastrophizing questionnaires, but with the results of the neuropsychological memory tests. There was a correlation between recall and reverse-order digit memory, suggesting that better recall of CPT was associated with poorer performance in working memory, but better performance in the ability to retain long-term information. Discussion: Although the importance of previous pain experiences in pain is recognized, there are few studies on memory of induced pain in non-clinical populations. This study could contribute to a better understanding of the factors that influence the ability to remember these events, highlighting the role that should be studied in greater detail in the future regarding the relationship between verbal memory skills and the recall of a painful event.
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Keywords
Dor aguda Memória Cold pressor test Otimismo Ansiedade Catastrofização CVLT Memória de dígitos Acute pain Memory Optimism Anxiety Catastrophization Digit memory