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Blink activities during multiple vigilance tasks with memory loads.

在具有内存负载的多个警戒任务期间眨眼活动。

基本信息

批准号：
18530565
负责人：
FUKUDA Kyosuke
金额：
$ 2.55万
依托单位：
Fukuoka Prefectural University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2006
资助国家：
日本
起止时间：
2006 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18530565/
关键词：
Eveblink Temnoral Distribution of Blinks Selective Attention Vieilance task Central & Peripheral location of visual stimulus ISI (Inter-Stimulus Interval ミス率情報処理

项目摘要

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

这项研究检查了与不同刺激间隔 (ISI) 下出现的中枢和外周刺激相关的眨眼活动。眨眼最常在刺激出现后立即发生（Fukuda，2006）。这些浓度与 ISI 为 1、500 毫秒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。如果容易受到刺激位置或 ISI 变化的影响，眨眼和选择性注意之间的关系将变得更加明显。因此，我们在 3 个不同的 ISI 下检测中央或外围位置的单个数字时检查了眨眼模式的变化。该实验以 200 ms 持续时间的离散序列呈现 1, 440 个从 0 到 9 的单个数字，作为一项警戒任务。外设位置以及 200、400 或 800 ms ISI。数字 1 出现的频率为 0.2，参与者需要在检测到数字 1 后尽快按下按键。通过使用连接在头盔上的摄像头，对从刺激开始前 1000 毫秒到刺激后 2,000 毫秒之间的每次眨眼事件进行计数，并从 2 个场景和 3 个 ISI 的所有 6 种可能排列中收集数据。然后，这些数据被转换成图表，显示眨眼时间分布 (TDB)，进而显示刺激开始后眨眼概率的变化。当刺激位于中心位置时，200 和 400 ms 较短 LSI 处的 TDB 显示仅在目标刺激之后眨眼概率的峰值。相比之下，最长的 ISI（800 毫秒）显示在任何类型的中心刺激后眨眼概率达到峰值。在周围刺激下，眨眼频率在较短的 ISI（200 和 400 毫秒）下降低。在这些较短的 ISI 下，也没有出现与没有按键有关的峰值，这表明目标刺激间歇性地被忽视。然而，在最长 ISI 为 800 毫秒的任何类型的外周刺激后，这种峰值都很明显。这些结果表明，虽然眨眼很容易在 800 毫秒 ISI 的任何刺激后立即发生，但它几乎完全在检测到 200 和 400 毫秒 ISI 的目标刺激后发生。由此得出的结论是，眨眼概率的峰值可能与选择性注意有关。较少的