Hartman M
Department of Psychology, University of North Carolina-Chapel Hill 27599-3270.
Neuropsychologia. 1991;29(3):213-28. doi: 10.1016/0028-3932(91)90083-k.
The ability to access and use semantic knowledge was examined in 25 patients with Alzheimer's disease (AD) and 31 healthy controls. The AD patients exhibited intact automatic activation of semantic relationships on a semantic priming task. They also made active use of category information on a recognition memory test. However, the patients did not use semantic information to generate expectations on the semantic priming task and were inconsistent in their use of category information on the memory test. It is suggested that attentional deficits underlie the observed impairments and may in fact help explain the patterns of performance across tasks differing widely in their overt cognitive demands.
研究人员对25名阿尔茨海默病（AD）患者和31名健康对照者进行了语义知识获取和运用能力的测试。AD患者在语义启动任务中表现出语义关系的完整自动激活。他们在识别记忆测试中也积极利用类别信息。然而，患者在语义启动任务中并未利用语义信息来产生预期，并且在记忆测试中对类别信息的使用并不一致。研究表明，注意力缺陷是观察到的损伤的基础，实际上可能有助于解释在明显认知需求差异很大的任务中的表现模式。
