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Auteur : Grafiati
Publié le 11 mars 2023

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1

Zhou, Yan-Bang, Qiang Li et Hong-Zhi Liu. « Visual attention and time preference reversals ». Judgment and Decision Making 16, no 4 (juillet 2021) : 1010–38. http://dx.doi.org/10.1017/s1930297500008068.

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AbstractTime preference reversal refers to systematic inconsistencies between preferences and bids for intertemporal options. From the two eye-tracking studies (N1 = 60, N2 = 110), we examined the underlying mechanisms of time preference reversal. We replicated the reversal effect in which individuals facing a pair of intertemporal options choose the smaller-sooner option but assign a higher value to the larger-later one. Results revealed that the mean fixation duration and the proportion of gaze time on the outcome attribute varied across the choice and bid tasks. In addition, time preference reversals correlated with individual differences in maximizing tendencies. Findings support the contingent weighting hypothesis and strategy compatibility hypothesis and allow for improved theoretical understanding of the potential mechanisms and processes involved in time preference reversals.
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Busse, L. « The Time Course of Shifting Visual Attention ». Journal of Neuroscience 26, no 15 (12 avril 2006) : 3885–86. http://dx.doi.org/10.1523/jneurosci.0459-06.2006.

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Egeth, Howard E., et Steven Yantis. « VISUAL ATTENTION : Control, Representation, and Time Course ». Annual Review of Psychology 48, no 1 (février 1997) : 269–97. http://dx.doi.org/10.1146/annurev.psych.48.1.269.

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Ruhnau, E., et V. Haase. « Space-time structure of selective visual attention ». International Journal of Psychophysiology 14, no 2 (février 1993) : 146. http://dx.doi.org/10.1016/0167-8760(93)90239-l.

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Ward, Robert, John Duncan et Kimron Shapiro. « The Slow Time-Course of Visual Attention ». Cognitive Psychology 30, no 1 (février 1996) : 79–109. http://dx.doi.org/10.1006/cogp.1996.0003.

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Chun, Marvin M. « Visual working memory as visual attention sustained internally over time ». Neuropsychologia 49, no 6 (mai 2011) : 1407–9. http://dx.doi.org/10.1016/j.neuropsychologia.2011.01.029.

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Srivastava, Priyanka, et Narayanan Srinivasan. « Time course of visual attention with emotional faces ». Attention, Perception, & ; Psychophysics 72, no 2 (février 2010) : 369–77. http://dx.doi.org/10.3758/app.72.2.369.

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Chastain, Garvin. « Time-course of location changes of visual attention ». Bulletin of the Psychonomic Society 29, no 5 (mai 1991) : 425–28. http://dx.doi.org/10.3758/bf03333960.

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Couffe, C., R. Mizzi et G. A. Michael. « Salience-based progression of visual attention : Time course ». Psychologie Française 61, no 3 (septembre 2016) : 163–75. http://dx.doi.org/10.1016/j.psfr.2015.04.003.

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Drisdelle, Brandi L., Greg L. West et Pierre Jolicoeur. « The deployment of visual spatial attention during visual search predicts response time ». NeuroReport 27, no 16 (novembre 2016) : 1237–42. http://dx.doi.org/10.1097/wnr.0000000000000684.

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Mathôt, Sebastiaan, et Jan Theeuwes. « Visual attention and stability ». Philosophical Transactions of the Royal Society B : Biological Sciences 366, no 1564 (27 février 2011) : 516–27. http://dx.doi.org/10.1098/rstb.2010.0187.

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In the present review, we address the relationship between attention and visual stability. Even though with each eye, head and body movement the retinal image changes dramatically, we perceive the world as stable and are able to perform visually guided actions. However, visual stability is not as complete as introspection would lead us to believe. We attend to only a few items at a time and stability is maintained only for those items. There appear to be two distinct mechanisms underlying visual stability. The first is a passive mechanism: the visual system assumes the world to be stable, unless there is a clear discrepancy between the pre- and post-saccadic image of the region surrounding the saccade target. This is related to the pre-saccadic shift of attention, which allows for an accurate preview of the saccade target. The second is an active mechanism: information about attended objects is remapped within retinotopic maps to compensate for eye movements. The locus of attention itself, which is also characterized by localized retinotopic activity, is remapped as well. We conclude that visual attention is crucial in our perception of a stable world.
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RODRIGUEZ-SANCHEZ, ANTONIO J., EVGUENI SIMINE et JOHN K. TSOTSOS. « ATTENTION AND VISUAL SEARCH ». International Journal of Neural Systems 17, no 04 (août 2007) : 275–88. http://dx.doi.org/10.1142/s0129065707001135.

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Selective Tuning (ST) presents a framework for modeling attention and in this work we show how it performs in covert visual search tasks by comparing its performance to human performance. Two implementations of ST have been developed. The Object Recognition Model recognizes and attends to simple objects formed by the conjunction of various features and the Motion Model recognizes and attends to motion patterns. The validity of the Object Recognition Model was first tested by successfully duplicating the results of Nagy and Sanchez. A second experiment was aimed at an evaluation of the model's performance against the observed continuum of search slopes for feature-conjunction searches of varying difficulty. The Motion Model was tested against two experiments dealing with searches in the visual motion domain. A simple odd-man-out search for counter-clockwise rotating octagons among identical clockwise rotating octagons produced linear increase in search time with the increase of set size. The second experiment was similar to one described by Thorton and Gilden. The results from both implementations agreed with the psychophysical data from the simulated experiments. We conclude that ST provides a valid explanatory mechanism for human covert visual search performance, an explanation going far beyond the conventional saliency map based explanations.
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Gottlob, Lawrence R. « Location cuing and response time distributions in visual attention ». Perception & ; Psychophysics 66, no 8 (novembre 2004) : 1293–302. http://dx.doi.org/10.3758/bf03194999.

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14

Watanabe, Katsumi. « Maintaining Visual Attention over Time : Effects of Object Continuity ». i-Perception 2, no 4 (mai 2011) : 207. http://dx.doi.org/10.1068/ic207.

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Carlson, Thomas A., Hinze Hogendoorn et Frans A. J. Verstraten. « The speed of visual attention : What time is it ? » Journal of Vision 6, no 12 (12 décembre 2006) : 6. http://dx.doi.org/10.1167/6.12.6.

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16

Scalf, Paige, Elexa ST. JOHN-SAALTINK, Markus Barth, Hakwan Lau et Floris De Lange. « Time-resolved fMRI tracks attention through the visual field ». Journal of Vision 16, no 12 (1 septembre 2016) : 907. http://dx.doi.org/10.1167/16.12.907.

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Tünnermann, Jan, et Bärbel Mertsching. « Region-Based Artificial Visual Attention in Space and Time ». Cognitive Computation 6, no 1 (27 juin 2013) : 125–43. http://dx.doi.org/10.1007/s12559-013-9220-5.

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Kim, Yeongbin, Joongchol Shin, Hasil Park et Joonki Paik. « Real-Time Visual Tracking with Variational Structure Attention Network ». Sensors 19, no 22 (9 novembre 2019) : 4904. http://dx.doi.org/10.3390/s19224904.

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Online training framework based on discriminative correlation filters for visual tracking has recently shown significant improvement in both accuracy and speed. However, correlation filter-base discriminative approaches have a common problem of tracking performance degradation when the local structure of a target is distorted by the boundary effect problem. The shape distortion of the target is mainly caused by the circulant structure in the Fourier domain processing, and it makes the correlation filter learn distorted training samples. In this paper, we present a structure–attention network to preserve the target structure from the structure distortion caused by the boundary effect. More specifically, we adopt a variational auto-encoder as a structure–attention network to make various and representative target structures. We also proposed two denoising criteria using a novel reconstruction loss for variational auto-encoding framework to capture more robust structures even under the boundary condition. Through the proposed structure–attention framework, discriminative correlation filters can learn robust structure information of targets during online training with an enhanced discriminating performance and adaptability. Experimental results on major visual tracking benchmark datasets show that the proposed method produces a better or comparable performance compared with the state-of-the-art tracking methods with a real-time processing speed of more than 80 frames per second.
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19

Duck, Julie M., Robert A. M. Gregson, Eileen B. J. Jones, Grant Noble et Michael Noy. « Children's visual attention to “playschool” : A time series analysis ». Australian Journal of Psychology 40, no 4 (décembre 1988) : 413–20. http://dx.doi.org/10.1080/00049538808260060.

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Barnard, Philip, Cristina Ramponi, Geoffrey Battye et Bundy Mackintosh. « Anxiety and the deployment of visual attention over time ». Visual Cognition 12, no 1 (janvier 2005) : 181–211. http://dx.doi.org/10.1080/13506280444000139.

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Saarinen, Jukka. « Focal Visual Attention and Pattern Discrimination ». Perception 22, no 5 (mai 1993) : 509–15. http://dx.doi.org/10.1068/p220509.

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Pattern discrimination in the presence of distractor patterns is improved when the stimulus display is preceded by a precue designating the location of the target pattern. Experiments were conducted to determine how big an improvement the precue produced. The specific question of whether the observer is able to process selectively the stimulus pattern in the cued location of the display and ignore the patterns of the noncued locations was addressed. In order to study this, reaction time for pattern discrimination on a blank background (no distractors) was compared with the reaction time when the observer performed the same discrimination task in the presence of distractors and a precue had indicated the location of the stimulus pattern to be discriminated. The results showed that these two reaction times were equal if the cue preceded the stimulus patterns at intervals which were longer than some minimum time. Hence, stimuli outside the ‘aperture’ of focal attention can be ignored. These results could not be attributed to eye movements, because the longest duration of the whole sequence of precue and stimulus patterns was only 200 ms.
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22

Mondor, T. A., et M. P. Bryden. « On the Relation between Visual Spatial Attention and Visual Field Asymmetries ». Quarterly Journal of Experimental Psychology Section A 44, no 3 (avril 1992) : 529–55. http://dx.doi.org/10.1080/14640749208401297.

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In the typical visual laterality experiment, words and letters are more rapidly and accurately identified in the right visual field than in the left. However, while such studies usually control fixation, the deployment of visual attention is rarely restricted. The present studies investigated the influence of visual attention on the visual field asymmetries normally observed in single-letter identification and lexical decision tasks. Attention was controlled using a peripheral cue that provided advance knowledge of the location of the forthcoming stimulus. The time period between the onset of the cue and the onset of the stimulus (Stimulus Onset Asynchrony—SOA) was varied, such that the time available for attention to focus upon the location was controlled. At short SO As a right visual field advantage for identifying single letters and for making lexical decisions was apparent. However, at longer SOAs letters and words presented in the two visual fields were identified equally well. It is concluded that visual field advantages arise from an interaction of attentional and structural factors and that the attentional component in visual field asymmetries must be controlled in order to approximate more closely a true assessment of the relative functional capabilities of the right and left cerebral hemispheres.
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23

Pu, Lei, Xinxi Feng, Zhiqiang Hou, Wangsheng Yu et Yufei Zha. « SiamDA : Dual attention Siamese network for real-time visual tracking ». Signal Processing : Image Communication 95 (juillet 2021) : 116293. http://dx.doi.org/10.1016/j.image.2021.116293.

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24

Iavecchia, Helene P., et Charles L. Folk. « Shifting Visual Attention in Stereographic Displays : A Time Course Analysis ». Human Factors : The Journal of the Human Factors and Ergonomics Society 36, no 4 (décembre 1994) : 606–18. http://dx.doi.org/10.1177/001872089403600404.

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Sanscartier, Shayne, Jessica Maxwell, Eric Taylor et Penelope Lockwood. « Attachment Avoidance and Visual Attention for Emotional Faces over Time ». Journal of Vision 16, no 12 (1 septembre 2016) : 79. http://dx.doi.org/10.1167/16.12.79.

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Deco, Gustavo, Olga Pollatos et Josef Zihl. « The time course of selective visual attention : theory and experiments ». Vision Research 42, no 27 (décembre 2002) : 2925–45. http://dx.doi.org/10.1016/s0042-6989(02)00358-9.

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Ouerhani, Nabil, et Heinz Hügli. « Real-time visual attention on a massively parallel SIMD architecture ». Real-Time Imaging 9, no 3 (juin 2003) : 189–96. http://dx.doi.org/10.1016/s1077-2014(03)00036-6.

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Battistoni, Elisa, Daniel Kaiser, Clayton Hickey et Marius V. Peelen. « The time course of spatial attention during naturalistic visual search ». Cortex 122 (janvier 2020) : 225–34. http://dx.doi.org/10.1016/j.cortex.2018.11.018.

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Madden, D. J. « Adult Age Differences in the Time Course of Visual Attention ». Journal of Gerontology 45, no 1 (1 janvier 1990) : P9—P16. http://dx.doi.org/10.1093/geronj/45.1.p9.

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Dombrowe, Isabel, Christian N. L. Olivers et Mieke Donk. « The time course of working memory effects on visual attention ». Visual Cognition 18, no 8 (17 mai 2010) : 1089–112. http://dx.doi.org/10.1080/13506281003651146.

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Srivastava, Priyanka, Devpriya Kumar et Narayanan Srinivasan. « Time course of visual attention across perceptual levels and objects ». Acta Psychologica 135, no 3 (novembre 2010) : 335–42. http://dx.doi.org/10.1016/j.actpsy.2010.09.001.

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Buonocore, Antimo, Niklas Dietze et Robert D. McIntosh. « Time-dependent inhibition of covert shifts of attention ». Experimental Brain Research 239, no 8 (3 juillet 2021) : 2635–48. http://dx.doi.org/10.1007/s00221-021-06164-y.

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AbstractVisual transients can interrupt overt orienting by abolishing the execution of a planned eye movement due about 90 ms later, a phenomenon known as saccadic inhibition (SI). It is not known if the same inhibitory process might influence covert orienting in the absence of saccades, and consequently alter visual perception. In Experiment 1 (n = 14), we measured orientation discrimination during a covert orienting task in which an uninformative exogenous visual cue preceded the onset of an oriented probe by 140–290 ms. In half of the trials, the onset of the probe was accompanied by a brief irrelevant flash, a visual transient that would normally induce SI. We report a time-dependent inhibition of covert orienting in which the irrelevant flash impaired orientation discrimination accuracy when the probe followed the cue by 190 and 240 ms. The interference was more pronounced when the cue was incongruent with the probe location, suggesting an impact on the reorienting component of the attentional shift. In Experiment 2 (n = 12), we tested whether the inhibitory effect of the flash could occur within an earlier time range, or only within the later, reorienting range. We presented probes at congruent cue locations in a time window between 50 and 200 ms. Similar to Experiment 1, discrimination performance was altered at 200 ms after the cue. We suggest that covert attention may be susceptible to similar inhibitory mechanisms that generate SI, especially in later stages of attentional shifting (> 200 ms after a cue), typically associated with reorienting.
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Furst, David M., et Gershon Tenenbaum. « Influence of Attentional Focus on Reaction Time ». Psychological Reports 56, no 1 (février 1985) : 299–302. http://dx.doi.org/10.2466/pr0.1985.56.1.299.

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It was hypothesized that attention could be directed to the emphasized task regardless of its spatial location. 20 subjects performed a simple RT to a stimulus located in foveal vision and a simple RT to four surrounding stimuli set in the visual periphery. Importance of task was manipulated through instructions. Analysis of variance showed subjects had shorter RTs to the emphasized area regardless of its spatial location. The attentional demands of the tasks and the importance assigned to the tasks were critical factors in response speed. This may help to explain the results of visual-narrowing experiments which have indicated narrowing after placing an attention-demanding task in foveal vision.
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Xia, Ru Ting, et Xiao Yan Zhou. « Measurement on Reaction Time of Visual Attention in Depth during Driving ». Applied Mechanics and Materials 319 (mai 2013) : 343–47. http://dx.doi.org/10.4028/www.scientific.net/amm.319.343.

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This research aimed to reveal characteristics of visual attention of low-vision drivers. Near and far stimuli were used by means of a three-dimensional (3D) attention measurement system that simulated traffic environment. We measured the reaction time of subjects while attention shifted in three kinds of imitational peripheral environment illuminance (daylight, twilight and dawn conditions). Subjects were required to judge whether the target presented nearer than fixation point or further than it. The results showed that the peripheral environment illuminance had evident influence on the reaction time of drivers, the reaction time was slow in dawn and twilight conditions than in daylight condition, distribution of attention had the advantage in nearer space than farther space, that is, and the shifts of attention in 3D space had an anisotropy characteristic in depth. The results suggested that (1) visual attention might be operated with both precueing paradigm and stimulus controls included the depth information, (2) an anisotropy characteristic of attention shifting depend on the attention moved distance, and it showed remarkably in dawn condition than in daylight and twilight conditions.
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35

Roberts, Ian D., Yi Yang Teoh et Cendri A. Hutcherson. « Time to Pay Attention ? Information Search Explains Amplified Framing Effects Under Time Pressure ». Psychological Science 33, no 1 (3 décembre 2021) : 90–104. http://dx.doi.org/10.1177/09567976211026983.

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Decades of research have established the ubiquity and importance of choice biases, such as the framing effect, yet why these seemingly irrational behaviors occur remains unknown. A prominent dual-system account maintains that alternate framings bias choices because of the unchecked influence of quick, affective processes, and findings that time pressure increases the framing effect have provided compelling support. Here, we present a novel alternative account of magnified framing biases under time pressure that emphasizes shifts in early visual attention and strategic adaptations in the decision-making process. In a preregistered direct replication ( N = 40 adult undergraduates), we found that time constraints produced strong shifts in visual attention toward reward-predictive cues that, when combined with truncated information search, amplified the framing effect. Our results suggest that an attention-guided, strategic information-sampling process may be sufficient to explain prior results and raise challenges for using time pressure to support some dual-system accounts.
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36

Mason, Deanna J., Glyn W. Humphreys et Lindsey S. Kent. « Exploring selective attention in ADHD : visual search through space and time ». Journal of Child Psychology and Psychiatry 44, no 8 (16 octobre 2003) : 1158–76. http://dx.doi.org/10.1111/1469-7610.00204.

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37

Wei, Chun-Chun, et Min-Yuan Ma. « Influences of Visual Attention and Reading Time on Children and Adults ». Reading & ; Writing Quarterly 33, no 2 (25 avril 2016) : 97–108. http://dx.doi.org/10.1080/10573569.2015.1092100.

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38

Blough, Donald S. « Reaction time drifts identify objects of attention in pigeon visual search. » Journal of Experimental Psychology : Animal Behavior Processes 19, no 2 (1993) : 107–20. http://dx.doi.org/10.1037/0097-7403.19.2.107.

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Ekanayake, Jinendra, Chloe Hutton, Gerard Ridgway, Frank Scharnowski, Nikolaus Weiskopf et Geraint Rees. « Real-time decoding of covert attention in higher-order visual areas ». NeuroImage 169 (avril 2018) : 462–72. http://dx.doi.org/10.1016/j.neuroimage.2017.12.019.

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Moya, L., S. Shomstein, A. Bagic et M. Behrmann. « The time course of neural activity in object-based visual attention ». Journal of Vision 8, no 6 (27 mars 2010) : 549. http://dx.doi.org/10.1167/8.6.549.

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Ewen, JB, DM Caggiano, BM Lakshmanan, H. Rosen et S. Yantis. « Time-Course of Top-Down Shifts of Covert Visual Spatial Attention ». NeuroImage 47 (juillet 2009) : S66. http://dx.doi.org/10.1016/s1053-8119(09)70361-1.

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deBettencourt, M. T., R. F. Lee, J. D. Cohen, K. A. Norman et N. B. Turk-Browne. « Externalizing internal states with real-time neurofeedback to train visual attention ». Journal of Vision 13, no 9 (25 juillet 2013) : 1132. http://dx.doi.org/10.1167/13.9.1132.

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43

Danno, Mikio, Matti Kutila et Juha M. Kortelainen. « Measurement of Driver’s Visual Attention Capabilities Using Real-Time UFOV Method ». International Journal of Intelligent Transportation Systems Research 9, no 3 (8 juin 2011) : 115–27. http://dx.doi.org/10.1007/s13177-011-0033-1.

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Konstantinova, M. V., V. N. Anisimov, L. V. Tereshchenko et A. V. Latanov. « The Link between Visual Attention and the Subjective Perception of Time ». Neuroscience and Behavioral Physiology 49, no 9 (novembre 2019) : 1145–49. http://dx.doi.org/10.1007/s11055-019-00851-8.

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45

Zuber, Irena, et Bo Ekehammar. « Personality, time of day and visual perception : Preferences and selective attention ». Personality and Individual Differences 9, no 2 (1988) : 345–52. http://dx.doi.org/10.1016/0191-8869(88)90097-9.

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46

Kashiwase, Yoshiyuki, Kazumichi Matsumiya, Ichiro Kuriki et Satoshi Shioiri. « Time Courses of Attentional Modulation in Neural Amplification and Synchronization Measured with Steady-state Visual-evoked Potentials ». Journal of Cognitive Neuroscience 24, no 8 (août 2012) : 1779–93. http://dx.doi.org/10.1162/jocn_a_00212.

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Endogenous attention modulates the amplitude and phase coherence of steady-state visual-evoked potentials (SSVEPs). In efforts to decipher the neural mechanisms of attentional modulation, we compared the time course of attentional modulation of SSVEP amplitude (thought to reflect the magnitude of neural population activity) and phase coherence (thought to reflect neural response synchronization). We presented two stimuli flickering at different frequencies in the left and right visual hemifields and asked observers to shift their attention to either stimulus. Our results demonstrated that attention increased SSVEP phase coherence earlier than it increased SSVEP amplitude, with a positive correlation between the attentional modulations of SSVEP phase coherence and amplitude. Furthermore, the behavioral dynamics of attention shifts were more closely associated with changes in phase coherence than with changes in amplitude. These results are consistent with the possibility that attention increases neural response synchronization, which in turn leads to increased neural population activity.
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47

Kida, Tetsuo, Koji Inui, Toshiaki Wasaka, Kosuke Akatsuka, Emi Tanaka et Ryusuke Kakigi. « Time-Varying Cortical Activations Related to Visual–Tactile Cross-Modal Links in Spatial Selective Attention ». Journal of Neurophysiology 97, no 5 (mai 2007) : 3585–96. http://dx.doi.org/10.1152/jn.00007.2007.

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The neural mechanisms underlying unimodal spatial attention have long been studied, but the cortical processes underlying cross-modal links remain a matter of debate. To reveal the cortical processes underlying the cross-modal links between vision and touch in spatial attention, we recorded magnetoencephalographic (MEG) responses to electrocutaneous stimuli when subjects directed attention to an electrocutaneous or visual stimulus presented randomly in the left or right space. Neural responses recorded around the bilateral sylvian fissures at 85 and 100 ms after the electrocutaneous stimulus were significantly enhanced by spatial attention in both the touch-irrelevant and -relevant modalities. Source analysis revealed that the sylvian responses were generated in the secondary somatosensory cortex (SII). An early response, M50c, generated in the contralateral primary somatosensory cortex (SI), was not modulated by attention. There were no significant attentional changes in the source location or magnetic field distribution, suggesting attentional facilitation of the neural activity in SII itself, rather than a tonic bias effect or overlapping of separate neuronal populations. The results show that spatial attention enhances responses to tactile inputs in SII, independent of sensory modality attended. The underlying mechanism remains to be determined, but may be an increase in gain.
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Lee, A. C., J. P. Harris et J. E. Calvert. « Overt Visual Attention in Parkinson's Disease ». Perception 25, no 1_suppl (août 1996) : 93. http://dx.doi.org/10.1068/v96p0303.

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The ability of Parkinsonian (PD) patients to control overt visual attention was investigated, by measuring reaction time to a visual stimulus presented at different distances (1.5 deg, 6 deg, and 12 deg) and directions (left or right) from a central fixation point. Prior to the onset of the target stimulus (a square), a cue stimulus appeared just above the fixation point. With equal probability, the arrow pointed to the left, or to the right, or was ambiguous (with two heads). On 20% of their presentations, the left and right arrows pointed in the direction opposite to where the target was to appear. Subjects were informed that 20% of cues would be misleading, and correcting lenses were used to optimise their visual acuity. In previous work with a similar paradigm, only one target eccentricity was used, and subjects were not refracted, leaving open the possibility that PD subjects had more difficulty in seeing the cues and targets. The eight PD subjects had longer reaction times than age-matched normal controls (and were relatively slower for the more eccentric targets), but made fewer errors in all conditions. In particular, they were more accurate than the controls on the presentations when the cue was misleading or ambiguous, suggesting that the PD group were ignoring the cue. It seems unlikely that the subjects discriminate the direction of the cues, given the use of optical correction, and they reported seeing the cues. Our data are consistent with those of other workers who have described a similar ‘disengagement of attention’ in PD (Clark et al, 1989 Neuropsychologia27 131 – 140) and attributed it to decreased catecholaminergic activity following destruction of midbrain structures (Wright et al, 1990 Neuropsychologia28 151 – 159).
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Hoang Dinh, Thang, Tuan Do Ngoc, Kien Thai Trung et Long Tran Quoc. « Real-time Siamese visual object tracking using attention and anchor-free mechanism ». Journal of Military Science and Technology, no 80 (28 juin 2022) : 132–41. http://dx.doi.org/10.54939/1859-1043.j.mst.80.2022.132-141.

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Trackers based on Siamese have consistently demonstrated superior performance in tracking visual objects. The majority of existing trackers calculate the features of the target template and search image independently and then estimate the target's scale and aspect ratio using either a multi-scale searching scheme or pre-defined anchor boxes. This paper proposed a Siamese attention network for tracking visual objects. An attention fusion mechanism is generated using pixel-level matching of template and search features. The framework proposed is anchor-free, making it both simple and effective. Extensive experiments on visual tracking benchmark VOT2018 and UAV123 demonstrate that our tracker operates at 42 fps and achieves state-of-the-art performance.
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50

Li, Ning, et Linda Ng Boyle. « Allocation of Driver Attention for Varying In-Vehicle System Modalities ». Human Factors : The Journal of the Human Factors and Ergonomics Society 62, no 8 (30 décembre 2019) : 1349–64. http://dx.doi.org/10.1177/0018720819879585.

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Objective This paper examines drivers’ allocation of attention using response time to a tactile detection response task (TDRT) while interacting with an in-vehicle information system (IVIS) over time. Background Longer TDRT response time is associated with higher cognitive workload. However, it is not clear what role is assumed by the human and system in response to varying in-vehicle environments over time. Method A driving simulator study with 24 participants was conducted with a restaurant selection task of two difficulty levels (easy and hard) presented in three modalities (audio only, visual only, hybrid). A linear mixed-effects model was applied to identify factors that affect TDRT response time. A nonparametric time-series model was also used to explore the visual attention allocation under the hybrid mode over time. Results The visual-only mode significantly increased participants’ response time compared with the audio-only mode. Females took longer to respond to the TDRT when engaged with an IVIS. The study showed that participants tend to use the visual component more toward the end of the easy tasks, whereas the visual mode was used more at the beginning of the harder tasks. Conclusion The visual-only mode of the IVIS increased drivers’ cognitive workload when compared with the auditory-only mode. Drivers showed different visual attention allocation during the easy and hard restaurant selection tasks in the hybrid mode. Application The findings can help guide the design of automotive user interfaces and help manage cognitive workload.
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