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| 探讨遗忘性轻度认知障碍患者听觉认知资源的调配和利用能力 |
| To Explore the Allocation and Utilization of Auditory Cognitive Resources in Patients with Amnestic Mild Cognitive Impairment |
| 投稿时间：2024-05-30 修订日期：2024-05-30 |
| DOI： |
| 中文关键词: 轻度认知功能障碍 听觉认知 资源调配 听配能 资源利用 |
| 英文关键词: Mild cognitive impairment,Auditory cognition,Allocation of resources,Listening effort,Resource utilization |
| 基金项目: |
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| 中文摘要: |
| 背景 噪声下的语音感知是一个涉及多方面的复杂过程，听觉系统与认知系统在这一过程中共同发挥着重要作用。遗忘性轻度认知障碍(Amnestic mild cognitive impairment， aMCI) 患者在言语识别和理解中存在困难，这在一定程度上可能与听觉认知资源的调配和利用能力改变相关。目的 探讨aMCI老年人的资源调配和利用特征，以期为认知障碍人群早期认知及听觉干预提供参考。方法 本研究拟通过对40名aMCI患者进行汉语“重复-回忆”言语认知功能测试(Repeat-Recall Test， RRT)，计算其在听觉任务中的资源调配和利用指标，并与认知正常老年人进行比较。利用斯皮尔曼相关分析可能与资源调配和利用相关的认知项目。结果 在低语境下，当信噪比（Signal-to-noise ratio, SNR）为5和-5dB时，aMCI组的资源调配显著高于认知正常老年人（P<0.01）；在高语境下，当SNR为0时，aMCI组的资源调配显著高于认知正常组（P<0.05）。与对照组相比，aMCI组在所有测试条件下的认知资源利用效率均显著下降（P均<0.05）。认知资源调配主要与蒙特利尔认知评估量表(Montreal Cognitive Assessment, MoCA)中的语言项目得分呈负相关。资源利用能力除了与语言有强烈的正相关性外，也与视空间与执行功能、注意力、定向力等其他认知维度相关。结论 aMCI患者在言语识别和理解过程中较认知正常人群分配更多认知资源，且对资源的利用能力更差。这些障碍可能导致患者日常沟通交流困难，从而影响生活质量。 |
| 英文摘要: |
| Background Speech perception in noise is a complex process involving many aspects, and auditory system and cognitive system play an important role in this process. Objective To explore the characteristics of resource allocation and utilization in the elderly with aMCI, in order to provide a reference for early cognitive intervention in people with cognitive impairment. Methods In this study, 40 patients withaMCI were tested with Chinese repeated-recall Test (RRT) to calculate their resource allocation and utilization in auditory tasks and compare them with cognitively normal older adults. Cognitive items potentially related to resource allocation and utilization were analyzed using Spearman's correlation. Results In low context, when SNR was 5 and -5dB, the aMCI group had significantly higher resource allocation than the cognitively normal elderly (P<0.01). In high context, when SNR was 0, the aMCI group had significantly higher resource allocation than the normal cognitive group (P<0.05). Compared with the control group, the aMCI group had significantly decreased cognitive resource utilization ability under all test conditions (all P <0.05). Cognitive resource allocation was negatively correlated with the scores of language items in Montreal Cognitive Assessment (MoCA). In addition to a strong positive correlation with language, resource utilization ability is also related to other cognitive dimensions such as visuospatial and executive function, attention, and orientation. Conclusion Patients with aMCI allocate more cognitive resources than those with normal cognition during speech recognition and comprehension, and their ability to use resources is worse. These barriers may lead to difficulties in daily communication, thereby affecting the quality of life of patients. |
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