Blink activities during multiple vigilance tasks with memory loads.

这项研究考察了在不同的刺激间期(ISI)下，与中枢和外周刺激相关的眨眼活动。眨眼最常发生在刺激呈现之后(福田，2006)。这些浓度与ISI时1500ms或更长的刺激持续时间无关。目前尚不清楚刺激位置和ISI如何影响眨眼的发生。如果它对刺激位置或ISI的变化敏感，眨眼和选择性注意之间的关系将变得更加明显。因此，当我们在3个不同ISI的中央或外围位置检测到单个数字时，我们研究了眨眼模式的变化。实验呈现了1,440个从0到9的单个数字，持续时间为200ms，作为一项警戒任务，这些数字出现在计算机显示器上的中央或外围位置，以及200、400或800ms的ISI。数字1的出现频率为0.2，并且Participa…更多的NT被要求在检测到它时尽快按下一个键。通过使用连接在头盔上的摄像头，统计从刺激开始前1000ms到之后2000ms的每一次眨眼情况，并从2种情景和3种ISI的所有6种可能的排列中收集数据。然后将这些数据转换成显示眨眼时间分布(TDB)的图表，进而显示从刺激场景开始的眨眼概率的变化。当刺激位于中央时，较短LSI为200和400ms的TDB仅在目标刺激之后显示眨眼概率的峰值。相比之下，最长的ISI(800ms)显示，在任何类型的中央位置刺激后，眨眼概率都达到峰值。对于外周刺激，眨眼频率在较短的ISI为200和400ms时减少。在这些较短的ISI上也没有与没有按键有关的峰值，这表明目标刺激正在间歇性地被忽视。然而，在任何一种位于外围的刺激在最长的ISI为800ms时，这种峰值都是明显的。这些结果表明，尽管在任何ISI为800ms的刺激后，眨眼容易立即发生，但几乎完全是在ISI为200ms和400ms的目标刺激检测之后。这就得出了这样的结论：眨眼概率的峰值可能与选择性注意有关。较少

This research examined eye blinking activity relative to central and peripheral stimuli presented at different Inter Stimulus Intervals (ISI). Blinking occurs most frequently immediately after the presentation of stimuli (Fukuda, 2006). These concentrations are independent of stimulus duration at ISI of 1, 500 ms or more. What is not yet known is how stimulus location and ISI affect blinking occurrence. If it is susceptible to changes in stimulus location or ISI, the relationship between blinking and selective attention will become more apparent We therefore examined shifts in blinking patterns when detecting single digits in either central or peripheral locations at 3 different ISI.The experiment presented 1, 440 single digit numbers from 0 to 9 in a discrete sequence of 200 ms duration as a vigilance task The digits appeared on a computer display in either a central or peripheral location and at 200, 400, or 800 ms ISI. The digit 1 was presented with a frequency of 0.2, and participa … More nts were required to press a key as quickly as possible upon its detection. By using a camera attached to a helmet, every instance of blinking from 1000 ms before stimulus onset to 2,000 ms thereafter was counted, and data was collected from all 6 possible permutations of the 2 scenarios and 3 ISI. This data was then converted into graphs showing the Temporal Distribution of Blinks (TDB) and, by extension, the change in blink probability from stimulus onset.When the stimulus was centrally located, the TDB at shorter LSI of 200 and 400 ms revealed the peak in eye blinking probability following the target stimulus only. By contrast, the longest ISI (800 ms) showed the peak in eye blinking probability following any kind of centrally located stimulus. With peripheral stimuli, eye blinking frequency was reduced at the shorter ISI of 200 and 400 ms. There were also no peaks pertaining to no key being pressed at these shorter ISI, suggesting that the target stimulus was intermittently going unnoticed. Such peaks were however apparent following any kind of peripherally located stimuli at the longest ISI of 800 ms.These results suggest that, while eye blinking is apt to occur immediately after any stimulus at ISI of 800 ms, it is almost exclusively post-detection of the target stimulus at ISI of 200 and 400 ms. This leads to the conclusion that peaks in blink probability may be related to selective attention. Less