Surprenant Aimee M
Psychology Department, Memorial University of Newfoundland, St. John's, NL, Canada.
Neuropsychol Dev Cogn B Aging Neuropsychol Cogn. 2007 Mar;14(2):126-43. doi: 10.1080/13825580701217710.
The present experiment investigated the hypothesis that age-related declines in cognitive functioning are partly due to a decrease in peripheral sensory functioning. In particular, it was suggested that some of the decline in serial recall for verbal material might be due to even small amounts of degradation due to noise or hearing loss. Older and younger individuals identified and recalled nonsense syllables in order at a number of different speech-to-noise ratios. Performance on the identification task was significantly correlated with performance on a subsequent serial recall task. However, this was restricted to the case in which the stimuli were presented in a substantial amount of noise. These data show that even small changes in sensory processing can lead to real and measurable declines in cognitive functioning as measured by a serial recall task.
认知功能随年龄增长而下降部分是由于外周感觉功能的减退。具体而言，有人提出，言语材料系列回忆的部分下降可能是由于即使少量的因噪音或听力损失导致的退化。年龄较大和较小的个体在多个不同的语音噪声比下依次识别并回忆无意义音节。识别任务的表现与随后的系列回忆任务的表现显著相关。然而，这仅限于刺激在大量噪音中呈现的情况。这些数据表明，即使感觉加工的微小变化也会导致通过系列回忆任务测量的认知功能出现真实且可测量的下降。
