Age effects on heart rate, sustained potential, and P3 responses during reaction-time tasks
Age effects on heart rate, sustained potential, and P3 responses during reaction-time tasks
复制标题
年龄对反应时任务中心率、持续电位和 P3 反应的影响
DOI：
10.1016/0197-4580(82)90055-0
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发表时间：
1982
影响因子：
4.2
通讯作者：
R. E. Dustman
中科院分区：
文献类型：
--
作者：
J. A. Podlesny;R. E. Dustman
- 在48名健康的年轻、中年和老年男性（平均年龄24岁、45岁和71岁）中，使用信号简单和选择RT任务，测试了老年受试者生理反应和反应时间（RT）减慢之间的关系。P3波幅和心率（HR）减速有年龄降低，但对P3潜伏期无影响。持续电位（SP或CNV）的幅度矛盾地随着年龄的增长而增加，可能表明较弱的抑制功能。P3振幅，SP振幅和HR减速与年轻受试者中的RT最强相关，但在选择任务期间，老年组中SP振幅与RT相关。青年组HR减速度与SP振幅和RT有少量变异。在老年组中，HR-SP-RT之间不存在相关性。在年轻组和老年组中，P3振幅和RT的选择简单任务差异相关。结果表明，HR，SP和P3反应可能反映了与健康老年受试者较慢的RT相关的生理过程。
—Relationships between physiological responses and slowed reaction time (RT) among elderly subjects were tested in 48 healthy young, middle-aged, and elderly men (mean ages 24, 45, and 71 years) using signaled simple and choice RT tasks. There were age reductions in P3 amplitude and heart rate (HR) deceleration, but no effects of age on P3 latency. Sustained potential (SP or CNV) amplitude paradoxically increased with age, possibly indicating weaker inhibitory function. P3 amplitude, SP amplitude, and HR deceleration were most strongly correlated with RT among younger subjects, but SP amplitude was correlated with RT in the elderly group during the choice task. HR deceleration shared a small amount of variance with SP amplitude and RT in the young group. There was no HR-SP-RT relationship in the older groups. Choice-simple task differences in P3 amplitude and RT were correlated in the young and elderly groups. The results suggest that HR, SP, and P3 responses may reflect physiological processes related to the slower RTs of healthy elderly subjects.