80岁以后的词汇访问限制
Carlos Rojas1, Bernardo Riffo2, Marilyn San Martín1
1Department of Health Rehabilitation Sciences, Universidad del Bío-Bío, Chillán 3780000, Chile.
Brain sciences
|September 28, 2023
概括
80岁以上的老年人经历了显著的词汇访问挑战,与年轻年龄组相比,表现出较慢和不太准确的词识别和检索. 这些缺陷在文字检索任务中更为明显.
科学领域:
- 认知神经科学 认知神经科学
- 心理语言学 心理语言学
- 老年学是指老年学的学科.
背景情况:
- 认知功能,特别是词汇访问,可以在晚年 (80岁以上) 衰退.
- 语言处理可能表现出弹性,但没有病理的老年人可能面临单词检索和识别困难.
- 这项研究调查了年龄相关的词汇访问限制在最老的成年人.
研究的目的:
- 为了检查80岁及以上的个体的词汇访问限制.
- 为了比较不同年龄组 (60-69岁,70-79岁和80岁以上) 的词识别和检索性能.
- 为了确定衰老对词汇访问速度和准确性的影响.
主要方法:
- 利用了四个词汇任务:词汇决策,命名,初始化 (识别) 和图片命名 (检索).
- 测量响应时间和准确度,以评估衰老对词汇获取的影响.
- 采用线性回归模型来比较各个年龄段 (60-69岁,70-79岁,80岁以上) 的模式和任务.
主要成果:
- 80岁以上的个体表现出显著的词汇访问限制,比年轻人群体更慢,更不准确.
- 单词检索,特别是在图片命名任务中,显示出比单词识别更深刻的限制.
- 老龄化对识别和检索单词的速度和准确性产生负面影响.
结论:
- 流体智力和神经传输的缺陷可能是晚年衰老中词语识别和检索减少的基础.
- 结晶智能似乎支持词汇访问准确性,特别是在词识别中,在老化过程中.
- 高度衰老对词汇访问,特别是对词汇检索提出了特定的挑战.
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