Age effects on event-related potentials in a selective attention task.
Age effects on event-related potentials in a selective attention task.
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选择性注意任务中年龄对事件相关电位的影响。
DOI：
10.1093/geronj/34.3.388
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发表时间：
1979
期刊：
影响因子：
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通讯作者：
B. S. Kopell
中科院分区：
文献类型：
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作者：
J. Ford;J. Ford;R. F. Hink;W. F. Hopkins;W. Roth;A. Pfefferbaum;B. S. Kopell
我们使用Hillyard等人（1973）开发的事件相关脑电位（ERP）技术来测试减弱无关刺激和检测目标刺激的能力。受试者，12名健康老年人（80.3岁）和12名健康年轻人（22.0岁），听到1500 Hz的音调在一只耳朵和800 Hz的音调在另一只耳朵。偶尔，两种音调的音调都会提高。在一次实验中，右耳中不常见的音调是目标，而在另一次实验中，左耳中的音调是目标。受试者计数目标。对于两组，ERP的早期成分（N1）是较大的音调在出席的耳朵比在无人值守的耳朵，和后来的成分（P3）是最大的目标。这表明，两组可以衰减不相关的刺激，并可以使用刺激概率信息在这个任务。老年受试者的P3较晚，这表明他们需要更长的时间来决定刺激的相关性。
We used an event-related brain potential (ERP) technique developed by Hillyard et al. (1973) to test abilities to attenuate irrelevant stimuli and to detect target stimuli. Subjects, 12 healthy old (80.3 years) and 12 healthy young adults (22.0 years), heard 1500 Hz tones in one ear and 800 Hz tones in the other ear. Infrequently, the pitch of either tone was raised. During one run, infrequent tones in the right ear were targets, and in the other run those in the left ear were targets. Subjects counted targets. For both groups, an early component of the ERP (N1) was larger to tones in the attended ear than in the unattended ear, and a later component (P3) was largest to the target. This suggests that both groups can attenuate irrelevant stimuli and can use stimulus probability information in this task. That P3 was later for old subjects suggests that they take longer to decide stimulus relevance.