Effects of shifts in the rate of repetitive stimulation on sustained attention
Effects of shifts in the rate of repetitive stimulation on sustained attention
复制标题
重复刺激率的变化对持续注意力的影响
DOI：
10.3758/bf03199369
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发表时间：
1975
期刊：
影响因子：
--
通讯作者：
T. Wohl
中科院分区：
文献类型：
--
作者：
J. Krulewitz;J. Warm;T. Wohl
在视觉警戒任务中研究了重复中性事件（背景事件率）呈现率变化的影响。四组受试者经历了高（21起事件/分钟）或低（6起事件/分钟）的事件发生率为20分钟，然后经历了相同的或交替的事件发生率为额外的40分钟。所有组的关键目标信号的时间发生是相同的，无论事件发生率。关键信号的密度为12个信号/20分钟。在会议结束时，事件率的变化与性能的变化，类似的对比效果，发现在其他实验情况下，其中使用移位范式。相对于恒定的事件率控制条件，从低到高的事件率的转变降低了信号检测的概率，而在相反的方向上的转变增强了信号检测的概率。
The effects of shifts in the rate of presentation of repetitive neutral events (background event rate) were studied in a visual vigilance task. Four groups of subjects experienced either a high (21 events/min) or a low (6 events/min) event rate for 20 min and then experienced either the same or the alternate event rate for an additional 40 min. The temporal occurrence of critical target signals was identical for all groups, irrespective of event rate. The density of critical signals was 12 signals/20 min. By the end of the session, shifts in event rate were associated with changes in performance which resembled contrast effects found in other experimental situations in which shift paradigms were used. Relative to constant event rate control conditions, a shift from a low to a high event rate depressed the probability of signal detections, while a shift in the opposite direction enhanced the probability of signal detections.