scholarly journals Gaze Point in the Evacuation Drills: Analysis of Eye Movement at the Indoor Wayfinding

2020 ◽  
Vol 12 (7) ◽  
pp. 2902 ◽  
Author(s):  
Young-Hoon Bae ◽  
Young-Chan Kim ◽  
Ryun-Seok Oh ◽  
Jong-Yeong Son ◽  
Won-Hwa Hong ◽  
...  
Keyword(s):  
Decision Making ◽  
Eye Movement ◽  
Recent Literature ◽  
Emergency Evacuation ◽  
Optimal Location ◽  
The Gaze ◽  
Movement Data ◽  
Indoor Wayfinding ◽  
Evacuation Drills ◽  
Vertical Height

Signage systems are the main means of resolving the wayfinding problem in an emergency evacuation. However, recent literature has proven that signage systems are often not effective in an indoor wayfinding decision-making situation. Many studies that attempted to solve the problem did not consider the interaction between the optimal location of signage systems and gaze characteristics. Therefore, this study aimed to provide basic database to determine the optimal location of signage by analysing the characteristics of eye movements according to the type of junction. To achieve this, we conducted evacuation experiments in a maze set composed of eight junctions that we created ourselves and analysed the eye movement data of participants with 5196 gaze points and duration of 895,581.49 ms. The result showed that participants most often look between 100 cm and 150 cm (vertical height) in the corridor and in junctions. In addition, the gaze points of the evacuees are quantified by the horizontal and vertical directions according to the type of junction where the wayfinding decisions occur. This investigation showed that there are marked differences depending on the type.

scholarly journals Saliency-Based Gaze Visualization for Eye Movement Analysis

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 5178
Author(s):  
Sangbong Yoo ◽  
Seongmin Jeong ◽  
Seokyeon Kim ◽  
Yun Jang
Keyword(s):  
Eye Movements ◽  
Visual Attention ◽  
Eye Movement ◽  
Visual Stimuli ◽  
Saliency Map ◽  
Gaze Behavior ◽  
The Gaze ◽  
Movement Data ◽  
Visual Clues ◽  
Human Visual Attention

Gaze movement and visual stimuli have been utilized to analyze human visual attention intuitively. Gaze behavior studies mainly show statistical analyses of eye movements and human visual attention. During these analyses, eye movement data and the saliency map are presented to the analysts as separate views or merged views. However, the analysts become frustrated when they need to memorize all of the separate views or when the eye movements obscure the saliency map in the merged views. Therefore, it is not easy to analyze how visual stimuli affect gaze movements since existing techniques focus excessively on the eye movement data. In this paper, we propose a novel visualization technique for analyzing gaze behavior using saliency features as visual clues to express the visual attention of an observer. The visual clues that represent visual attention are analyzed to reveal which saliency features are prominent for the visual stimulus analysis. We visualize the gaze data with the saliency features to interpret the visual attention. We analyze the gaze behavior with the proposed visualization to evaluate that our approach to embedding saliency features within the visualization supports us to understand the visual attention of an observer.

Decision-Making While Passing and Visual Search Strategy During Ball Receiving in Team Sport Play

2020 ◽  
Vol 127 (2) ◽  
pp. 468-489 ◽  
Author(s):  
Takayuki Natsuhara ◽  
Takaaki Kato ◽  
Masao Nakayama ◽  
Takuya Yoshida ◽  
Ryota Sasaki ◽  
...  
Keyword(s):  
Decision Making ◽  
Visual Search ◽  
Eye Movement ◽  
Team Sports ◽  
Search Strategies ◽  
Middle Level ◽  
Verbal Reports ◽  
Movement Data ◽  
High Level ◽  
Action Coupling

In many team sports, in which environmental change is constant, athletes selectively allocate attention between the approaching ball and other players, and constantly consistently making decisions regarding whom to pass the ball to. Few previous studies on decision-making in team sports such as soccer have included the ball reception phase. This study examined players’ visual search strategies during pass decisions. Using five-on-four soccer-specific film simulations from previously recorded real scenes, high-level players (HLPs) and middle-level players (MLPs) reacted to life-sized soccer scenes. We measured their visual search strategies in decision-making tasks involving ball reception and pass execution and collected their verbal reports. We employed a novel system wherein the ball is ejected toward participants according to the video clips in order to maintain perception–action coupling during the task. We found skill-based differences in decision-making accuracy, eye movement data, and verbal reports. HLPs demonstrated better decision-making than MLPs, and, in eye movement data, HLPs allocated more attention to nonmarked attackers ([ M]  =  14.1, [ SD]  =  4.8%, p <  .001, η2 = 0.39), the teammate receiving the pass ( M =  18.4, SD = 4.3%, p <  .05, η2 = 0.15), and opponents ( M =  14.6, SD =  6.3%, p <  .05, η2 = 0.17) than did MLPs. Furthermore, according to verbal reports, HLPs tended to attend to information on opponent players. Thus, visual search strategies during ball reception suggest that the position and situation of teammates and opponents are the most important information sources for accurate and consistent pass decisions.

scholarly journals Gaze Information Channel in Cognitive Comprehension of Poster Reading

Entropy ◽  
2019 ◽  
Vol 21 (5) ◽  
pp. 444 ◽  
Author(s):  
Qiaohong Hao ◽  
Mateu Sbert ◽  
Lijing Ma
Keyword(s):  
Markov Chain ◽  
Mutual Information ◽  
Eye Tracking ◽  
Eye Movement ◽  
Human Cognition ◽  
Information Channel ◽  
The Gaze ◽  
Movement Data ◽  
Discrete Information ◽  
Scientific Poster

Today, eye trackers are extensively used in studying human cognition. However, it is hard to analyze and interpret eye movement data from the cognitive comprehension perspective of poster reading. To find quantitative links between eye movements and cognitive comprehension, we tracked observers’ eye movement for reading scientific poster publications. We model in this paper eye tracking fixation sequences between content-dependent Areas of Interests (AOIs) as a Markov chain. Furthermore, we use the fact that a Markov chain is a special case of information or communication channel. Then, the gaze transition can be modeled as a discrete information channel, the gaze information channel. Next, some traditional eye tracking metrics, together with the gaze entropy and mutual information of the gaze information channel are calculated to quantify cognitive comprehension for every participant. The analysis of the results demonstrate that the gaze entropy and mutual information from individual gaze information channel are related to participants’ individual differences. This is the first study that eye tracking technology has been used to assess the cognitive comprehension of poster reading. The present work provides insights into human cognitive comprehension by using the novel gaze information channel methodology.

scholarly journals Gaze Path Stimulation in Retrospective Think-Aloud

2008 ◽  
Vol 2 (4) ◽  
Author(s):  
Aulikki Hyrskykari ◽  
Saila Ovaska ◽  
Pävi Majaranta ◽  
Kari-Jouko Räihä ◽  
Merja Lehtinen
Keyword(s):  
Eye Tracking ◽  
Eye Movement ◽  
Usability Testing ◽  
Usability Evaluation ◽  
Think Aloud ◽  
The Gaze ◽  
Movement Data ◽  
Long Time ◽  
Verbal Data ◽  
Common Understanding

For a long time, eye tracking has been thought of as a promising method for usability testing. During the last couple of years, eye tracking has finally started to live up to these expectations, at least in terms of its use in usability laboratories. We know that the user’s gaze path can reveal usability issues that would otherwise go unnoticed, but a common understanding of how best to make use of eye movement data has not been reached. Many usability practitioners seem to have intuitively started to use gaze path replays to stimulate recall for retrospective walk through of the usability test. We review the research on thinkaloud protocols in usability testing and the use of eye tracking in the context of usability evaluation. We also report our own experiment in which we compared the standard, concurrent think-aloud method with the gaze path stimulated retrospective think-aloud method. Our results suggest that the gaze path stimulated retrospective think-aloud method produces more verbal data, and that the data are more informative and of better quality as the drawbacks of concurrent think-aloud have been avoided.

Age Differences in Eye Movements During Reading: Degenerative Problems or Compensatory Strategy?

2019 ◽  
Vol 24 (4) ◽  
pp. 297-311
Author(s):  
José David Moreno ◽  
José A. León ◽  
Lorena A. M. Arnal ◽  
Juan Botella
Keyword(s):  
Eye Movements ◽  
Eye Movement ◽  
Meta Analysis ◽  
Age Groups ◽  
Behavioral Changes ◽  
Aging Effects ◽  
Movement Data ◽  
Sentence Reading ◽  
The Difference ◽  
Eye Movements During Reading

Abstract. We report the results of a meta-analysis of 22 experiments comparing the eye movement data obtained from young ( Mage = 21 years) and old ( Mage = 73 years) readers. The data included six eye movement measures (mean gaze duration, mean fixation duration, total sentence reading time, mean number of fixations, mean number of regressions, and mean length of progressive saccade eye movements). Estimates were obtained of the typified mean difference, d, between the age groups in all six measures. The results showed positive combined effect size estimates in favor of the young adult group (between 0.54 and 3.66 in all measures), although the difference for the mean number of fixations was not significant. Young adults make in a systematic way, shorter gazes, fewer regressions, and shorter saccadic movements during reading than older adults, and they also read faster. The meta-analysis results confirm statistically the most common patterns observed in previous research; therefore, eye movements seem to be a useful tool to measure behavioral changes due to the aging process. Moreover, these results do not allow us to discard either of the two main hypotheses assessed for explaining the observed aging effects, namely neural degenerative problems and the adoption of compensatory strategies.

Do Successor Effects in Reading Reflect Parafoveal Processing? Evidence From Corpus-Based and Experimental Eye Movement Data

2014 ◽  
Author(s):  
Bernhard Angele ◽  
Elizabeth R. Schotter ◽  
Timothy Slattery ◽  
Tara L. Chaloukian ◽  
Klinton Bicknell ◽  
...  
Keyword(s):  
Eye Movement ◽  
Parafoveal Processing ◽  
Movement Data

Challenges in Interpretability of Neural Networks for Eye Movement Data

2020 ◽  
Author(s):  
Ayush Kumar ◽  
Prantik Howlader ◽  
Rafael Garcia ◽  
Daniel Weiskopf ◽  
Klaus Mueller
Keyword(s):  
Neural Networks ◽  
Eye Movement ◽  
Movement Data

Naturalistic Decision Making in High Performance Team Sport Coaching

2015 ◽  
Vol 2 (2) ◽  
pp. 152-168 ◽  
Author(s):  
Stephen Harvey ◽  
John William Baird Lyle ◽  
Bob Muir
Keyword(s):  
Decision Making ◽  
High Performance ◽  
Recent Literature ◽  
Critical Factors ◽  
Naturalistic Decision Making ◽  
Problem Framing ◽  
Stimulated Recall ◽  
Suitable Framework ◽  
And Training

A defining element of coaching expertise is characterised by the coach’s ability to make decisions. Recent literature has explored the potential of Naturalistic Decision Making (NDM) as a useful framework for research into coaches’ in situ decision making behaviour. The purpose of this paper was to investigate whether the NDM paradigm offered a valid mechanism for exploring three high performance coaches’ decision-making behaviour in competition and training settings. The approach comprised three phases: 1) existing literature was synthesised to develop a conceptual framework of decision-making cues to guide and shape the exploration of empirical data; 2) data were generated from stimulated recall procedures to populate the framework; 3) existing theory was combined with empirical evidence to generate a set of concepts that offer explanations for the coaches’ decision-making behaviour. Findings revealed that NDM offered a suitable framework to apply to coaches’ decision-making behaviour. This behaviour was guided by the emergence of a slow, interactive script that evolves through a process of pattern recognition and/or problem framing. This revealed ‘key attractors’ that formed the initial catalyst and the potential necessity for the coach to make a decision through the breaching of a ‘threshold’. These were the critical factors for coaches’ interventions.

The “Orienting Reflex” as an Input Indicator in “Subliminal” Perception

1972 ◽  
Vol 35 (1) ◽  
pp. 103-110
Author(s):  
Phillip Kleespies ◽  
Morton Wiener
Keyword(s):  
Eye Movements ◽  
Eye Movement ◽  
Exposure Duration ◽  
Visual Input ◽  
Orienting Reflex ◽  
Subliminal Perception ◽  
Thematic Content ◽  
Movement Data ◽  
Report Data ◽  
Input Indicator

This study explored (1) for evidence of visual input at so-called “subliminal” exposure durations, and (2) whether the response, if any, was a function of the thematic content of the stimulus. Thematic content (threatening versus non-threatening) and stimulus structure (angular versus curved) were varied independently under “subliminal,” “part-cue,” and “identification” exposure conditions. With Ss' reports and the frequency and latency of first eye movements (“orienting reflex”) as input indicators, there was no evidence of input differences which are a function of thematic content at any exposure duration, and the “report” data were consistent with the eye-movement data.

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