2019
DOI: 10.1371/journal.pone.0225897
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Rapid serial blinks: An index of temporally increased cognitive load

Abstract: In recent years, natural viewing settings with video presentation have been used in neurological and psychological experiments. However, the experienced cognitive load may differ among participants. In this study, we show that rapid serial blinks (RSB) can indicate temporally increased cognitive load with high temporal resolution. We proposed a method to create a personal criterion for respective participants by using empirical blink intervals. When we focused on more than four serial blinks (i.e., three inter… Show more

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Cited by 6 publications
(3 citation statements)
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“…Similarly, every blink was also detected and categorized. Blinks were once a nuisance to overcome in measuring eye movement via video-based tracking, but they have recently become a behavioral marker in their own right [ 18 , 20 ]. Additionally, the trials that were once discarded can now be utilized for behavioral analysis.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…Similarly, every blink was also detected and categorized. Blinks were once a nuisance to overcome in measuring eye movement via video-based tracking, but they have recently become a behavioral marker in their own right [ 18 , 20 ]. Additionally, the trials that were once discarded can now be utilized for behavioral analysis.…”
Section: Discussionmentioning
confidence: 99%
“…Blinks can cause a full, or even partial, occlusion of the pupil, which results in data loss. At first deemed a nuisance, these moments of data loss have recently become useful for studying a vast variety of blink behaviors [ 18 , 19 , 20 , 21 ]. This data loss during eye tracking can occur for a number of different reasons, and is not caused only by blinks.…”
Section: Methodsmentioning
confidence: 99%
“…The time period between two or more consecutive eye blinks can be a good indicator of task difficulty as well. For example, a poor understanding of the subject matter in a lecture on mathematics resulted, for some persons, on an increased number of rapid serial blinks [ 10 ]. Blink frequency can be easily measured by, for example, analysing a video of the user’s face recorded with a typical laptop webcam.…”
Section: Easy Reading User Tracking and Reasoningmentioning
confidence: 99%