Estudo da resposta pupilar como indicador da memória de reconhecimento
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2022
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Desde os anos 60, os investigadores têm explorado a relação entre o tamanho da pupila
e a função cognitiva. As respostas pupilares são conhecidas por indicar processos
cerebrais envolvidos na perceção, atenção e tomada de decisões, podendo fornecer um
biomarcador acessível do desempenho da memória humana e dos estados cognitivos em
geral. A presente investigação pretendeu estudar a resposta pupilar como indicador da
memória de reconhecimento. A amostra foi constituída por 21 estudantes universitários
que realizaram uma tarefa de reconhecimento composta por 3 pares de listas diferentes,
cada uma com 10 palavras na fase de apresentação e 20 palavras na fase de
reconhecimento. A análise dos resultados foi feita com base nas respostas
comportamentais, nomeadamente as omissões, falsos alarmes, rejeições corretas e
acertos, e na média da resposta pupilar, com a manipulação do tempo do intervalo de
retenção. Os resultados não evidenciam um aumento da dilatação pupilar face ao
aumento do intervalo de retenção, o que não comprova a primeira hipótese. No entanto,
indicam um aumento da média da resposta pupilar quando a percentagem de falsos
alarmes aumenta, o que corrobora parcialmente a segunda hipótese.
Since the 1960s, researchers have been exploring the relationship between pupil size and cognitive function. Pupillary responses are known to indicate brain processes involved in perception, attention and decision making, and may provide an accessible biomarker of human memory performance and cognitive states in general. The present investigation aimed to study the pupillary response as an indicator of recognition memory. The sample consisted of 21 university students who performed a recognition task consisting of 3 pairs of different lists, each with 10 words in the presentation phase and 20 in the recognition phase. The analysis of the results was based on behavioral responses, namely omissions, false alarms, correct rejections and hits, and the average pupil response, with manipulation of the retention interval time. The results do not show an increase in pupil dilation in relation to the increase in the retention interval, which does not support the first hypothesis. However, they indicate an increase in the percentage of false alarms along with a decrease in the percentage of hits when the retention interval increases, which corroborates the second hypothesis.
Since the 1960s, researchers have been exploring the relationship between pupil size and cognitive function. Pupillary responses are known to indicate brain processes involved in perception, attention and decision making, and may provide an accessible biomarker of human memory performance and cognitive states in general. The present investigation aimed to study the pupillary response as an indicator of recognition memory. The sample consisted of 21 university students who performed a recognition task consisting of 3 pairs of different lists, each with 10 words in the presentation phase and 20 in the recognition phase. The analysis of the results was based on behavioral responses, namely omissions, false alarms, correct rejections and hits, and the average pupil response, with manipulation of the retention interval time. The results do not show an increase in pupil dilation in relation to the increase in the retention interval, which does not support the first hypothesis. However, they indicate an increase in the percentage of false alarms along with a decrease in the percentage of hits when the retention interval increases, which corroborates the second hypothesis.
Descrição
Orientação: Jorge Oliveira
Palavras-chave
MESTRADO EM NEUROPSICOLOGIA APLICADA, NEUROPSICOLOGIA, MEMÓRIA, MOVIMENTOS OCULARES, NEUROPSYCHOLOGY, MEMORY, EYE MOVEMENTS