Abstract
OBJETIVO: verificar o efeito da habilidade de resolução temporal na ordenação temporal de uma serie de sons com tempo de estímulo e de intervalo inter-estímulo variado em uma população de idosos com ou sem perda auditiva. MÉTODO: 10 (dez) indivíduos idosos com perda auditiva de grau leve a moderado que faziam ou não uso de AASI e cinco idosos sem perda auditiva, com idade entre 60 e 80 anos foram submetidos aos testes de ordenação temporal de serie de sons com tom puro, denominado Teste padrão de Duração, e com tom musical, denominado teste de padrão de duração melódico, e o teste de resolução temporal Gaps-in-Noise ou teste GIN. RESULTADOS: a análise do teste de resolução temporal quanto à porcentagem de identificação correta mostra que o grupo sem perda possui maior porcentagem de identificação de gaps do que o grupo com perda. Assim, os indivíduos com perda auditiva tiveram piores limiares de detecção de Gaps (médias de 11,4 milissegundos) do que os indivíduos sem perda auditiva (4,6 milissegundos). Na analise de cada um dos testes de ordenação de serie de sons não ocorreram diferenças estatisticamente significantes entre os grupos. Não houve correlação significante entre o desempenho dos idosos sem e com perda auditiva entre os testes de processamento temporal. CONCLUSÃO: a habilidade de resolução temporal não interfere na habilidade de ordenação temporal de uma série de sons com tempos de duração de estímulos e intervalos inter-estimulos variados em idosos com ou sem perda auditiva.
Highlights
Hearing loss is one of the most chronic conditions in elderly 1.2
This study aimed to investigate the effect of temporal resolution ability in the temporal ordering of a series of sounds with time of stimulation and inter-stimulus interval varied in an elderly population with or without hearing loss
It is noteworthy that in this comparison of the GIN test with the two TPD tests was observed that the greater the number of hits per ear in the GIN test and the lower the threshold of hearing acuity as measured by the same test, the better the results found in two tests of TPD in both groups, not statistically significant, showing that the small sample size has limited the study
Summary
Hearing loss is one of the most chronic conditions in elderly 1.2. Presbycusis is the progressive decline in hearing associated with age, its prevalence is estimated around 30% in this population[3]. Hearing loss associated to aging affects about 60% of people older than 65 years, and has multifactorial causes, as the physiological degeneration, ototoxic (1) Speech made at the Federal University of São Paulo-UNIFESP. (2) Speech, Associate Professor of the Discipline Hearing Disorders, Department of Speech Pathology, UNIFESP; PhD in Human Communication Disorders, Federal University of Sao Paulo. Assistance CNPq-PIBIC 2009/2010 Conflict of interests: non-existent agents and damage caused by organic dysfunction associated with aging. Essential to the performance of human communication, listening is critical in speech perception and helps with the inclusion of the subject in society[1], is considered one of the most important sensory systems 2
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