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https://www.readbyqxmd.com/read/29783738/etracker-a-mobile-gaze-tracking-system-with-near-eye-display-based-on-a-combined-gaze-tracking-algorithm
#1
Bin Li, Hong Fu, Desheng Wen, WaiLun Lo
Eye tracking technology has become increasingly important for psychological analysis, medical diagnosis, driver assistance systems, and many other applications. Various gaze-tracking models have been established by previous researchers. However, there is currently no near-eye display system with accurate gaze-tracking performance and a convenient user experience. In this paper, we constructed a complete prototype of the mobile gaze-tracking system ' Etracker ' with a near-eye viewing device for human gaze tracking...
May 19, 2018: Sensors
https://www.readbyqxmd.com/read/29782325/early-emotional-attention-is-impacted-in-alzheimer-s-disease-an-eye-tracking-study
#2
Jessica Bourgin, Nathalie Guyader, Alan Chauvin, Alexandra Juphard, Mathilde Sauvée, Olivier Moreaud, Laetitia Silvert, Pascal Hot
Emotional deficits have been repetitively reported in Alzheimer's disease (AD) without clearly identifying how emotional processing is impaired in this pathology. This paper describes an investigation of early emotional processing, as measured by the effects of emotional visual stimuli on a saccadic task involving both pro (PS) and anti (AS) saccades. Sixteen patients with AD and 25 age-matched healthy controls were eye-tracked while they had to quickly move their gaze toward a positive, negative, or neutral image presented on a computer screen (in the PS condition) or away from the image (in the AS condition)...
May 16, 2018: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29780926/macular-edema-associated-with-intraocular-ointment-after-cataract-surgery
#3
Asaka Kudo, Takashi Kudo, Daisuke Takahashi, Tomomi Metoki, Yukihiko Suzuki, Mitsuru Nakazawa
Purpose: To report a case with macular edema associated with uveitis, a decreased corneal endothelial cell density, and vitreous opacity caused by migrated intraocular antibiotic ointment after uneventful cataract surgery. Observations: A 63-year-old man underwent uneventful sutureless superior clear corneal phacoemulsification and implantation of an intraocular lens in his right eye. Eleven months later, he complained of blurred vision when he gazed downward. Three months later, uveitis, vitreous opacity, and retinal hemorrhage were noted...
June 2018: American Journal of Ophthalmology Case Reports
https://www.readbyqxmd.com/read/29774172/moebius-syndrome-with-hypoglossal-palsy-syndactyly-brachydactyly-and-anisometropic-amblyopia
#4
Muhammad Hassaan Ali, Samreen Jamal, Muhammad Ather Rashid, Usman Javaid, Nadeem Hafeez Butt
Moebius syndrome is a rare cause of congenital facial and abducens palsy.  It is sometimes associated with musculoskeletal abnormalities and other cranial nerve palsies. Genetics and ischemic insults to the fetus are considered to be the cause of this syndrome. We report here a 12-year-old female patient who was presented to us with poor cosmesis of her face, with associated decreased vision and lagophthalmos in her left eye. She didn't have any signs of exposure keratopathy in the affected eye. Her best-corrected vision was 20/20 and 20/60 in right and left eyes respectively...
March 16, 2018: Curēus
https://www.readbyqxmd.com/read/29761961/-study-on-method-of-laparoscopic-training-based-on-eye-gaze-tracking-techniques
#5
Mingzhe Xu, Shuyi Wang, Shasha Ye
In current domestic research on laparoscopic training, researchers usually consider instrument movement path in the hand-eye coordination relationship. However, they ignore the information contained in visual cues by which could guide and control instrument movements. Studies in other areas have shown that trainers can improve their perceptual-motor skills by gaze training. This paper was designed to examine the effectiveness of eye gaze tracking technology in laparoscopic training and to analyze gaze strategy of the subjects in different training methods...
October 1, 2017: Sheng Wu Yi Xue Gong Cheng Xue za Zhi, Journal of Biomedical Engineering, Shengwu Yixue Gongchengxue Zazhi
https://www.readbyqxmd.com/read/29729209/gaze-stability-dynamic-balance-and-participation-deficits-in-people-with-multiple-sclerosis-at-fall-risk
#6
Hina Garg, Leland E Dibble, Michael C Schubert, Jim Sibthorp, K Bo Foreman, Eduard Gappmaier
Despite the common complaints of dizziness and demyelination of afferent or efferent pathways to and from the vestibular nuclei which may adversely affect the angular Vestibulo-Ocular Reflex (aVOR) and vestibulo-spinal function in persons with Multiple Sclerosis (PwMS), few studies have examined gaze and dynamic balance function in PwMS. OBJECTIVES: 1) Determine the differences in gaze stability, dynamic balance and participation measures between PwMS and controls, 2) Examine the relationships between gaze stability, dynamic balance and participation...
May 5, 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29719558/pomona-large-vessel-occlusion-screening-tool-for-prehospital-and-emergency-room-settings
#7
Kessarin Panichpisal, Kenneth Nugent, Maharaj Singh, Richard Rovin, Reji Babygirija, Yogesh Moradiya, Karen Tse-Chang, Kimberly A Jones, Katrina J Woolfolk, Debbie Keasler, Bhupat Desai, Parinda Sakdanaraseth, Paphavee Sakdanaraseth, Alimohammad Moalem, Nazli Janjua
Background: Early identification of patients with acute ischemic strokes due to large vessel occlusions (LVO) is critical. We propose a simple risk score model to predict LVO. Method: The proposed scale (Pomona Scale) ranges from 0 to 3 and includes 3 items: gaze deviation, expressive aphasia, and neglect. We reviewed a cohort of all acute stroke activation patients between February 2014 and January 2016. The predictive performance of the Pomona Scale was determined and compared with several National Institutes of Health Stroke Scale (NIHSS) cutoffs (≥4, ≥6, ≥8, and ≥10), the Los Angeles Motor Scale (LAMS), the Cincinnati Prehospital Stroke Severity (CPSS) scale, the Vision Aphasia and Neglect Scale (VAN), and the Prehospital Acute Stroke Severity Scale (PASS)...
April 2018: Interventional Neurology
https://www.readbyqxmd.com/read/29715582/does-dynamic-information-about-the-speaker-s-face-contribute-to-semantic-speech-processing-erp-evidence
#8
David Hernández-Gutiérrez, Rasha Abdel Rahman, Manuel Martín-Loeches, Francisco Muñoz, Annekathrin Schacht, Werner Sommer
Face-to-face interactions characterize communication in social contexts. These situations are typically multimodal, requiring the integration of linguistic auditory input with facial information from the speaker. In particular, eye gaze and visual speech provide the listener with social and linguistic information, respectively. Despite the importance of this context for an ecological study of language, research on audiovisual integration has mainly focused on the phonological level, leaving aside effects on semantic comprehension...
April 9, 2018: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/29710312/the-role-of-gaze-and-prior-knowledge-on-allocentric-coding-of-reach-targets
#9
Zijian Lu, Mathias Klinghammer, Katja Fiehler
In this study, we investigated the influence of gaze and prior knowledge about the reach target on the use of allocentric information for memory-guided reaching. Participants viewed a breakfast scene with five objects in the background and six objects on the table. Table objects served as potential reach targets. Participants first encoded the scene and, after a short delay, a test scene was presented with one table object missing and one, three, or five table objects horizontally shifted in the same direction...
April 1, 2018: Journal of Vision
https://www.readbyqxmd.com/read/29710301/eye-gaze-direction-shows-a-positive-serial-dependency
#10
David Alais, Garry Kong, Colin Palmer, Colin Clifford
Recent work from several groups has shown that perception of various visual attributes in human observers at a given moment is biased towards what was recently seen. This positive serial dependency is a kind of temporal averaging which exploits short-term correlations in visual scenes to reduce noise and stabilize perception. Here we test for serial dependencies in perception of head and eye direction using a simple reproduction method to measure perceived head/eye gaze direction in rapid sequences of briefly presented face stimuli...
April 1, 2018: Journal of Vision
https://www.readbyqxmd.com/read/29709551/predictive-model-for-distal-junctional-kyphosis-after-cervical-deformity-surgery
#11
Peter G Passias, Dennis Vasquez-Montes, Gregory W Poorman, Themistocles Protopsaltis, Samantha R Horn, Cole A Bortz, Frank Segreto, Bassel Diebo, Chris Ames, Justin Smith, Virginie LaFage, Renaud LaFage, Eric Klineberg, Chris Shaffrey, Shay Bess, Frank Schwab
BACKGROUND CONTEXT: Distal Junctional Kyphosis (DJK) is a primary concern of surgeons correcting cervical deformity. Identifying patients and procedures at higher risk for developing this condition is paramount in improving patient selection and care. PURPOSE: Develop a risk index for DJK development in the first year after surgery. STUDY DESIGN/SETTING: Retrospective review of a prospective multicenter cervical deformity database. PATIENT SAMPLE: Patients over the age of 18 meeting one of the following deformities: cervical kyphosis (C2-7 Cobb angle >10°), cervical scoliosis (coronal Cobb angle >10°), positive cervical sagittal imbalance (C2-C7 sagittal vertical axis >4cm or T1-C6 >10 o ), or horizontal gaze impairment (chin-brow vertical angle >25o )...
April 27, 2018: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/29684769/implicit-negative-affect-predicts-attention-to-sad-faces-beyond-self-reported-depressive-symptoms-in-healthy-individuals-an-eye-tracking-study
#12
Charlott Maria Bodenschatz, Marija Skopinceva, Anette Kersting, Markus Quirin, Thomas Suslow
Cognitive theories of depression assume biased attention towards mood-congruent information as a central vulnerability and maintaining factor. Among other symptoms, depression is characterized by excessive negative affect (NA). Yet, little is known about the impact of naturally occurring NA on the allocation of attention to emotional information. The study investigates how implicit and explicit NA as well as self-reported depressive symptoms predict attentional biases in a sample of healthy individuals (N = 104)...
April 4, 2018: Psychiatry Research
https://www.readbyqxmd.com/read/29675715/eye-movements-in-interception-with-delayed-visual-feedback
#13
Clara Cámara, Cristina de la Malla, Joan López-Moliner, Eli Brenner
The increased reliance on electronic devices such as smartphones in our everyday life exposes us to various delays between our actions and their consequences. Whereas it is known that people can adapt to such delays, the mechanisms underlying such adaptation remain unclear. To better understand these mechanisms, the current study explored the role of eye movements in interception with delayed visual feedback. In two experiments, eye movements were recorded as participants tried to intercept a moving target with their unseen finger while receiving delayed visual feedback about their own movement...
April 19, 2018: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/29672190/recovery-of-a-disinserted-medial-rectus-muscle-after-pterygium-surgery
#14
Prapatsorn Patikulsila, Atitaya Apivatthakakul, Kasem Seresirikachorn
PURPOSE: To report a case of recovery of a medial rectus which was accidentally disinserted after surgical treatment of a recurrent pterygium. METHOD: Report of a case of inadvertent medial rectus disinsertion after pterygium excision at a secondary care hospital which was referred to a tertiary care hospital in Northern Thailand. RESULT: A 40-year-old healthy woman was referred by a general ophthalmologist at a secondary care center to our hospital...
April 19, 2018: Strabismus
https://www.readbyqxmd.com/read/29664159/reading-aids-for-adults-with-low-vision
#15
REVIEW
Gianni Virgili, Ruthy Acosta, Sharon A Bentley, Giovanni Giacomelli, Claire Allcock, Jennifer R Evans
BACKGROUND: The purpose of low-vision rehabilitation is to allow people to resume or to continue to perform daily living tasks, with reading being one of the most important. This is achieved by providing appropriate optical devices and special training in the use of residual-vision and low-vision aids, which range from simple optical magnifiers to high-magnification video magnifiers. OBJECTIVES: To assess the effects of different visual reading aids for adults with low vision...
April 17, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29659103/real-time-lexical-comprehension-in-young-children-learning-american-sign-language
#16
Kyle MacDonald, Todd LaMarr, David Corina, Virginia A Marchman, Anne Fernald
When children interpret spoken language in real time, linguistic information drives rapid shifts in visual attention to objects in the visual world. This language-vision interaction can provide insights into children's developing efficiency in language comprehension. But how does language influence visual attention when the linguistic signal and the visual world are both processed via the visual channel? Here, we measured eye movements during real-time comprehension of a visual-manual language, American Sign Language (ASL), by 29 native ASL-learning children (16-53 mos, 16 deaf, 13 hearing) and 16 fluent deaf adult signers...
April 16, 2018: Developmental Science
https://www.readbyqxmd.com/read/29658751/age-differences-in-emotion-regulation-effort-pupil-response-distinguishes-reappraisal-and-distraction-for-older-but-not-younger-adults
#17
Bruna Martins, Jan Florjanczyk, Nicholas J Jackson, Margaret Gatz, Mara Mather
In previous research, older adults show greater emotional benefits from distracting themselves than from reappraising an event when strategically regulating emotion. Older adults also demonstrate an attentional preference to avoid, while younger adults show a bias toward approaching negative stimuli. This suggests a possible age-related differentiation of cognitive effort across approach and avoidance of negative stimuli during emotion regulation. In this study, we tracked cognitive effort via pupil dilation during the use of distraction (avoidance) and reappraisal (approach) strategies across age...
March 2018: Psychology and Aging
https://www.readbyqxmd.com/read/29656076/is-improved-lane-keeping-during-cognitive-load-caused-by-increased-physical-arousal-or-gaze-concentration-toward-the-road-center
#18
Penghui Li, Gustav Markkula, Yibing Li, Natasha Merat
Driver distraction is one of the main causes of motor-vehicle accidents. However, the impact on traffic safety of tasks that impose cognitive (non-visual) distraction remains debated. One particularly intriguing finding is that cognitive load seems to improve lane keeping performance, most often quantified as reduced standard deviation of lateral position (SDLP). The main competing hypotheses, supported by current empirical evidence, suggest that cognitive load improves lane keeping via either increased physical arousal, or higher gaze concentration toward the road center, but views are mixed regarding if, and how, these possible mediators influence lane keeping performance...
April 12, 2018: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/29629542/diagnostic-utility-of-the-three-step-test-according-to-the-presence-of-the-trochlear-nerve-in-superior-oblique-palsy
#19
Ji Eun Lee, Hee Kyung Yang, Jae Hyoung Kim, Jeong Min Hwang
BACKGROUND AND PURPOSE: To determine the diagnostic utility of the three-step test in unilateral superior oblique palsy (SOP) according to the presence of the trochlear nerve using high-resolution thin-section magnetic resonance imaging. METHODS: In total, 166 patients with congenital and acquired unilateral SOP were included, comprising 87 with a normal trochlear nerve (present group) and 79 without a trochlear nerve (absent group). The sensitivity of each component of the three-step test was evaluated as well as factors related to the sensitivity...
January 2018: Journal of Clinical Neurology
https://www.readbyqxmd.com/read/29617410/how-social-exclusion-modulates-social-information-processing-a-behavioural-dissociation-between-facial-expressions-and-gaze-direction
#20
Francesco Bossi, Marcello Gallucci, Paola Ricciardelli
Social exclusion is a painful experience that is felt as a threat to the human need to belong and can lead to increased aggressive and anti-social behaviours, and results in emotional and cognitive numbness. Excluded individuals also seem to show an automatic tuning to positivity: they tend to increase their selective attention towards social acceptance signals. Despite these effects known in the literature, the consequences of social exclusion on social information processing still need to be explored in depth...
2018: PloS One
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