scholarly journals Maintaining Visual Attention over Time: Effects of Object Continuity

i-Perception ◽  
10.1068/ic207 ◽  
2011 ◽  
Vol 2 (4) ◽  
pp. 207-207
Author(s):  
Katsumi Watanabe
Keyword(s):  
Visual Attention ◽  
Time Effects ◽  
Over Time

scholarly journals Glimpse: A Gaze-Based Measure of Temporal Salience

Sensors ◽  
2021 ◽  
Vol 21 (9) ◽  
pp. 3099
Author(s):  
V. Javier Traver ◽  
Judith Zorío ◽  
Luis A. Leiva
Keyword(s):  
Visual Attention ◽  
Computational Models ◽  
Temporal Evolution ◽  
Temporal Consistency ◽  
Visual Salience ◽  
Temporal Dimension ◽  
Spatial Perspective ◽  
Spatio Temporal ◽  
Scoring Algorithms ◽  
Over Time

Temporal salience considers how visual attention varies over time. Although visual salience has been widely studied from a spatial perspective, its temporal dimension has been mostly ignored, despite arguably being of utmost importance to understand the temporal evolution of attention on dynamic contents. To address this gap, we proposed Glimpse, a novel measure to compute temporal salience based on the observer-spatio-temporal consistency of raw gaze data. The measure is conceptually simple, training free, and provides a semantically meaningful quantification of visual attention over time. As an extension, we explored scoring algorithms to estimate temporal salience from spatial salience maps predicted with existing computational models. However, these approaches generally fall short when compared with our proposed gaze-based measure. Glimpse could serve as the basis for several downstream tasks such as segmentation or summarization of videos. Glimpse’s software and data are publicly available.

Does What We See Shape History? Examining Workload History as a Function of Performance and Ambient/Focal Visual Attention

2021 ◽  
Vol 18 (2) ◽  
pp. 1-17
Author(s):  
Shannon P. Devlin ◽  
Jennifer K. Byham ◽  
Sara Lu Riggs
Keyword(s):  
Visual Attention ◽  
Eye Tracking ◽  
Performance Measure ◽  
Task Demands ◽  
Unexpected Finding ◽  
Impact Performance ◽  
History Effects ◽  
And Performance ◽  
Workload History ◽  
Over Time

Changes in task demands can have delayed adverse impacts on performance. This phenomenon, known as the workload history effect, is especially of concern in dynamic work domains where operators manage fluctuating task demands. The existing workload history literature does not depict a consistent picture regarding how these effects manifest, prompting research to consider measures that are informative on the operator's process. One promising measure is visual attention patterns, due to its informativeness on various cognitive processes. To explore its ability to explain workload history effects, participants completed a task in an unmanned aerial vehicle command and control testbed where workload transitioned gradually and suddenly. The participants’ performance and visual attention patterns were studied over time to identify workload history effects. The eye-tracking analysis consisted of using a recently developed eye-tracking metric called coefficient K , as it indicates whether visual attention is more focal or ambient. The performance results found workload history effects, but it depended on the workload level, time elapsed, and performance measure. The eye-tracking analysis suggested performance suffered when focal attention was deployed during low workload, which was an unexpected finding. When synthesizing these results, they suggest unexpected visual attention patterns can impact performance immediately over time. Further research is needed; however, this work shows the value of including a real-time visual attention measure, such as coefficient K , as a means to understand how the operator manages varying task demands in complex work environments.

Classification Based on Multivariate Repeated Measures with Time Effect on Mean Vector and an AR (1) Correlation Structure on the Repeated Measures

2005 ◽  
Vol 57 (1-2) ◽  
pp. 49-66 ◽  
Author(s):  
Anuradba Roy ◽  
Ravindra Khattree
Keyword(s):  
Maximum Likelihood ◽  
Repeated Measures ◽  
Likelihood Estimation ◽  
Covariance Matrices ◽  
Time Effect ◽  
Population Parameters ◽  
Time Effects ◽  
Mean Vectors ◽  
Mean Vector ◽  
Over Time

In repeated measures studies how observations change over time is often of prime interest. Modelling this time effect in the context of discrimination, is the objective of this article. We study the problem of classification with multiple q-variate observations with time effect on each individual. The covariance matrices as well as mean vectors are mordelled respectively to accommodate the correlation between the successive repeated measures and to describe the time effects. Computation schemes for maximum likelihood estimation of required population parameters are provided.

scholarly journals Attachment Avoidance and Visual Attention for Emotional Faces over Time

2016 ◽  
Vol 16 (12) ◽  
pp. 79
Author(s):  
Shayne Sanscartier ◽  
Jessica Maxwell ◽  
Eric Taylor ◽  
Penelope Lockwood
Keyword(s):  
Visual Attention ◽  
Attachment Avoidance ◽  
Emotional Faces ◽  
Over Time

Stress Management and Immune System Reconstitution in Symptomatic HIV-Infected Gay Men Over Time: Effects on Transitional Naive T Cells (CD4+CD45RA+CD29+)

2002 ◽  
Vol 159 (1) ◽  
pp. 143-145 ◽  
Author(s):  
Michael H. Antoni ◽  
Dean G. Cruess ◽  
Nancy Klimas ◽  
Kevin Maher ◽  
Stacy Cruess ◽  
...  
Keyword(s):  
T Cells ◽  
Immune System ◽  
Stress Management ◽  
Gay Men ◽  
Time Effects ◽  
Naive T Cells ◽  
Naïve T Cells ◽  
Over Time

Feasibility and preliminary efficacy of a telerehabilitation approach to group adapted tango instruction for people with Parkinson disease

2016 ◽  
Vol 23 (8) ◽  
pp. 740-746 ◽  
Author(s):  
Katie J Seidler ◽  
Ryan P Duncan ◽  
Marie E McNeely ◽  
Madeleine E Hackney ◽  
Gammon M Earhart
Keyword(s):  
Pilot Study ◽  
Adverse Events ◽  
Parkinson Disease ◽  
A Priori ◽  
Significant Group ◽  
Time Effects ◽  
Group Time ◽  
Participant Retention ◽  
Outcome Differences ◽  
Over Time

People with Parkinson disease (PD) demonstrate improvements in motor function following group tango classes, but report long commutes as a barrier to participation. To increase access, we investigated a telerehabilitation approach to group tango instruction. Twenty-six people with mild-to-moderate PD were assigned based on commute distance to either the telerehabilitation group (Telerehab) or an in-person instruction group (In-person). Both groups followed the same twice-weekly, 12-week curriculum with the same instructor. Feasibility metrics were participant retention, attendance and adverse events. Outcomes assessed were balance, PD motor sign severity and gait. Participant retention was 85% in both groups. Attendance was 87% in the Telerehab group and 84% in the In-person group. No adverse events occurred. Balance and motor sign severity improved significantly over time ( p < 0.001) in both groups, with no significant group × time effects. Gait did not significantly change. Since a priori feasibility criteria were met or exceeded, and there were no notable outcome differences between the two instruction approaches, this pilot study suggests a telerehabilitation approach to group tango class for people with PD is feasible and may have similar outcomes to in-person instruction.

scholarly journals DynOVis: a web tool to study dynamic perturbations for capturing dose-over-time effects in biological networks

2019 ◽  
Vol 20 (1) ◽  
Author(s):  
T. J. M. Kuijpers ◽  
J. E. J. Wolters ◽  
J. C. S. Kleinjans ◽  
D. G. J. Jennen
Keyword(s):  
Biological Networks ◽  
Web Tool ◽  
Time Effects ◽  
Over Time

9. Within-Object Attentional Allocation Biases

2017 ◽  
Author(s):  
Natalie McGlynn
Keyword(s):  
Spatial Distribution ◽  
Visual Search ◽  
Visual Attention ◽  
Attentional Bias ◽  
Change Over Time ◽  
Attentional Allocation ◽  
Search Results ◽  
Over Time ◽  
Attention Shifts

This study involved two experiments. The goal of the first was to evaluate how visual attention is distributed spatially within an object, and how a spatial distribution may change over time. We accomplished this by having people press a button as soon as they noticed a target appear at various onset times and locations within an arch-shaped object. In the second experiment, we extended the arch-object and cued one end of it, in order to examine whether attention is biased to follow the shape of an object even if such a mechanism reduces the efficiency of a visual search. Results from the first experiment indicate that initially, there is no attentional bias to any location within an object. However, as looking time increases, a developing bias to the centre of objects occurs before attention adopts a strategic spatial distribution within the object. Results from the second experiment indicate that after attention is captured by a cued area, attention shifts away from the cued location. The path attention takes from the cued area is not constrained within the object. With increased time, however, attention does not move back to the cued location. Therefore, although attention is not constrained to follow the shape of the object one focuses on, it seems that the efficiency of a visual search is still jeopardized due to reluctance for attention to move to previously attended locations.

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