keyword
MENU ▼
Read by QxMD icon Read
search

pattern of eye movement

keyword
https://www.readbyqxmd.com/read/27920752/the-effect-of-emotion-and-reward-contingencies-on-relational-memory-in-major-depression-an-eye-movement-study-with-follow-up
#1
Viola L Nemeth, Gergo Csete, Gergely Drotos, Nora Greminger, Zoltan Janka, Laszlo Vecsei, Anita Must
Background: Episodic memory disturbances were found to constitute a potential trait marker for major depression (MD). The recall of positive or rewarding information in a relational context is specifically impaired. Eye-movement recording constitutes a novel, direct approach to examine implicit memory performance. Here we aimed to assess the effect of emotional context and implicit virtual monetary reward or loss on viewing patterns in association with relational memory in a 6-months follow-up study in MD. Materials and Methods: Twenty-eight patients with MD and 30 healthy participants were trained to associate a face (happy/sad/neutral) with a background scene...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27909402/upright-perception-and-ocular-torsion-change-independently-during-head-tilt
#2
Jorge Otero-Millan, Amir Kheradmand
We maintain a stable perception of the visual world despite continuous movements of our eyes, head and body. Perception of upright is a key aspect of such orientation constancy. Here we investigated whether changes in upright perception during sustained head tilt were related to simultaneous changes in torsional position of the eyes. We used a subjective visual vertical (SVV) task, modified to track changes in upright perception over time, and a custom video method to measure ocular torsion simultaneously. We tested 12 subjects in upright position, during prolonged (~15 min) lateral head tilts of 20 degrees, and also after the head returned to upright position...
2016: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/27894025/fixating-on-the-size-speed-illusion-of-approaching-railway-trains-what-we-can-learn-from-our-eye-movements
#3
Helen E Clark, John A Perrone, Robert B Isler, Samuel G Charlton
Railway level crossing collisions have recently been linked to a size-speed illusion where larger objects such as trains appear to move slower than smaller objects such as cars. An explanation for this illusion has centred on observer eye movements - particularly in relation to the larger, longer train. A previous study (Clark et al., 2016) found participants tend to make initial fixations to locations around the visual centroid of a moving vehicle; however individual eye movement patterns tended to be either fixation-saccade-fixation type, or smooth pursuit...
November 25, 2016: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/27892641/the-effect-of-illustration-on-improving-text-comprehension-in-dyslexic-adults
#4
Mona Holmqvist Olander, Eva Wennås Brante, Marcus Nyström
This study analyses the effect of pictures in reading materials on the viewing patterns of dyslexic adults. By analysing viewing patterns using eye-tracking, we captured differences in eye movements between young adults with dyslexia and controls based on the influence of reading skill as a continuous variable of the total sample. Both types of participants were assigned randomly to view either text-only or a text + picture stimuli. The results show that the controls made an early global overview of the material and (when a picture was present) rapid transitions between text and picture...
November 28, 2016: Dyslexia: the Journal of the British Dyslexia Association
https://www.readbyqxmd.com/read/27890325/functional-coupling-between-frontoparietal-and-occipitotemporal-pathways-during-action-and-perception
#5
R Matthew Hutchison, Jason P Gallivan
Several lines of evidence point to areas in the occipitotemporal pathway as being critical in the processes of visual perception and object recognition. Much less appreciated, however, is the role that this pathway plays in object-related processing for the purposes of visually guided action. Here, using functional MRI (fMRI) and functional connectivity (FC) measures, we examined interactions between areas in frontoparietal cortex (FPC) involved in grasping, reaching, eye movements, and tool use and areas in occipitotemporal cortex (OTC) involved in object-, face-, scene-, body-, tool-, and motion-related processing, both during the performance of sensorimotor and visual-perceptual tasks, as well as during passive fixation (resting-state)...
November 9, 2016: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/27888574/normal-heart-in-parkinson-s-disease-is-this-a-distinct-clinical-phenotype
#6
J-S Kim, H-E Park, I-S Park, Y-S Oh, D-W Ryu, I-U Song, Y-A Jung, I R Yoo, H-S Choi, P H Lee, K-S Lee
BACKGROUND AND PURPOSE: Reduction of metaiodobenzylguanidine (MIBG) uptake has been observed in almost all patients with Parkinson's disease (PD), associated with hyposmia, orthostatic hypotension and rapid eye movement sleep behavioral disorder (RBD). In contrast, a subgroup of patients with PD with normal MIBG uptake have been reported to have milder disease and preserved cognition compared with those with lower MIBG. The aim of this study was to investigate whether non-motor manifestations of PD differ between patients with normal and abnormal myocardial MIBG uptake...
November 26, 2016: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/27873433/blindness-to-background-an-inbuilt-bias-for-visual-objects
#7
Catherine G O'Hanlon, Jenny C A Read
Sixty-eight 2- to 12-year-olds and 30 adults were shown colorful displays on a touchscreen monitor and trained to point to the location of a named color. Participants located targets near-perfectly when presented with four abutting colored patches. When presented with three colored patches on a colored background, toddlers failed to locate targets in the background. Eye tracking demonstrated that the effect was partially mediated by a tendency not to fixate the background. However, the effect was abolished when the targets were named as nouns, whilst the change to nouns had little impact on eye movement patterns...
November 22, 2016: Developmental Science
https://www.readbyqxmd.com/read/27869764/drivers-visual-search-patterns-during-overtaking-maneuvers-on-freeway
#8
Wenhui Zhang, Jing Dai, Yulong Pei, Penghui Li, Ying Yan, Xinqiang Chen
Drivers gather traffic information primarily by means of their vision. Especially during complicated maneuvers, such as overtaking, they need to perceive a variety of characteristics including the lateral and longitudinal distances with other vehicles, the speed of others vehicles, lane occupancy, and so on, to avoid crashes. The primary object of this study is to examine the appropriate visual search patterns during overtaking maneuvers on freeways. We designed a series of driving simulating experiments in which the type and speed of the leading vehicle were considered as two influential factors...
November 19, 2016: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/27868260/an-experimental-study-of-adolescent-sleep-restriction-during-a-simulated-school-week-changes-in-phase-sleep-staging-performance-and-sleepiness
#9
Alex Agostini, Mary A Carskadon, Jillian Dorrian, Scott Coussens, Michelle A Short
This laboratory study investigated the impact of restricted sleep during a simulated school week on circadian phase, sleep stages and daytime functioning. Changes were examined across and within days and during a simulated weekend recovery. Participants were 12 healthy secondary school students (six male) aged 15-17 years [mean = 16.1 years, standard deviation (SD) = 0.9]. After 2 nights with 10 h (21:30-07:30 hours), time in bed was restricted to 5 h for 5 nights (02:30-07:30 hours), then returned to 10 h time in bed for 2 nights (21:30-07:30 hours)...
November 21, 2016: Journal of Sleep Research
https://www.readbyqxmd.com/read/27867260/tracking-sentence-comprehension-test-retest-reliability-in-people-with-aphasia-and-unimpaired-adults
#10
Jennifer E Mack, Andrew Zu-Sern Wei, Stephanie Gutierrez, Cynthia K Thompson
PURPOSE: Visual-world eyetracking is increasingly used to investigate online language processing in normal and language impaired listeners. Tracking changes in eye movements over time also may be useful for indexing language recovery in those with language impairments. Therefore, it is critical to determine the test-retest reliability of results obtained using this method. METHODS: Unimpaired young adults and people with aphasia took part in two eyetracking sessions spaced about one week apart...
November 2016: Journal of Neurolinguistics
https://www.readbyqxmd.com/read/27862474/steady-state-vep-responses-to-uncomfortable-stimuli
#11
Louise O'Hare
Periodic stimuli, such as op-art, can evoke a range of aversive sensations included in the term visual discomfort. Illusory motion effects are elicited by fixational eye movements, but the cortex might also contribute to effects of discomfort. To investigate this possibility, steady-state visually-evoked responses (SSVEPs) to contrast-matched op-art-based stimuli were measured at the same time as discomfort judgements. On average, discomfort reduced with increasing spatial frequency of the pattern. By contrast, the peak amplitude of the SSVEP response was around the midrange spatial frequencies...
November 15, 2016: European Journal of Neuroscience
https://www.readbyqxmd.com/read/27859598/reduction-of-gapdh-in-lenses-of-parkinson-s-disease-patients-a-possible-new-biomarker
#12
Alexa Klettner, Andreas Tholey, Alena Wiegandt, Elisabeth Richert, Bernhard Nölle, Günther Deuschl, Johann Roider, Susanne A Schneider
BACKGROUND: We previously showed that the protein pattern of lenses removed in cataract surgery differs between patients with Parkinson's disease and age-matched controls. In this study, we identified the protein reduced in abundance in the 34- to 37-kDa gel band. METHODS: During cataract surgery (phacoemulsification), we collected the rinsing fluid and lens particles from the eyes of PD patients and controls. Residual lens fragments in the supernatant of 3 PD patients and aged-matched controls were studied for protein profiles using liquid chromatography-mass spectrometry and Western blots...
November 10, 2016: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/27857701/processing-and-representation-of-ambiguous-words-in-chinese-reading-evidence-from-eye-movements
#13
Wei Shen, Xingshan Li
In the current study, we used eye tracking to investigate whether senses of polysemous words and meanings of homonymous words are represented and processed similarly or differently in Chinese reading. Readers read sentences containing target words which was either homonymous words or polysemous words. The contexts of text preceding the target words were manipulated to bias the participants toward reading the ambiguous words according to their dominant, subordinate, or neutral meanings. Similarly, disambiguating regions following the target words were also manipulated to favor either the dominant or subordinate meanings of ambiguous words...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27855175/reappraisal-and-distraction-emotion-regulation-strategies-are-associated-with-distinct-patterns-of-visual-attention-and-differing-levels-of-cognitive-demand
#14
Gregory P Strauss, Kathryn L Ossenfort, Kayla M Whearty
Multiple emotion regulation strategies have been identified and found to differ in their effectiveness at decreasing negative emotions. One reason for this might be that individual strategies are associated with differing levels of cognitive demand and require distinct patterns of visual attention to achieve their effects. In the current study, we tested this hypothesis in a sample of psychiatrically healthy participants (n = 25) who attempted to down-regulate negative emotion to photographs from the International Affective Picture System using cognitive reappraisal or distraction...
2016: PloS One
https://www.readbyqxmd.com/read/27837042/gaze-shift-patterns-during-a-jump-with-full-turn-in-male-gymnasts
#15
Yusuke Sato, Shuko Torii, Masaharu Sasaki, Thomas Heinen
When airborne, gymnasts skillfully control their movements to achieve a successful landing. Utilizing visual information from task-specific eye-body coordination patterns (i.e., visual spotting) is thought to be important for gymnasts in the performance of aerial skills. The purpose of this study was to assess the interplay of eye movements and body movements in an aerial skill with a rotation about the longitudinal axis, namely a straight jump with full turn. Participants were 10 skilled male gymnasts (age [M ± SD], 23...
November 11, 2016: Perceptual and Motor Skills
https://www.readbyqxmd.com/read/27835068/impact-of-superior-oblique-transposition-on-primary-position-deviation-a-pattern-and-intorsion-in-third-nerve-palsy
#16
Anupam Singh, P K Pandey, Sanjeev Kumar Mittal, Ajai Agrawal, Chirag Bahuguna, Prashant Kumar
PURPOSE: To evaluate the role of superior oblique transposition on primary position alignment, A pattern, and intorsion in third nerve palsy. METHODS: Ten patients with isolated, unilateral third nerve palsy were included in this prospective study. The patients were treated by conventional surgery on horizontal recti together with superior oblique transposition by Scott's procedure in the paretic eye. RESULTS: Pre-operative primary horizontal deviation was 60-80 PD (mean 70...
November 11, 2016: Strabismus
https://www.readbyqxmd.com/read/27833677/somnambulism-emergency-department-admissions-due-to-sleepwalking-related-trauma
#17
Thomas C Sauter, Sajitha Veerakatty, Dominik G Haider, Thomas Geiser, Meret E Ricklin, Aristomenis K Exadaktylos
INTRODUCTION: Somnambulism is a state of dissociated consciousness, in which the affected person is partially asleep and partially awake. There is pervasive public opinion that sleepwalkers are protected from hurting themselves. There have been few scientific reports of trauma associated with somnambulism and no published investigations on the epidemiology or trauma patterns associated with somnambulism. METHODS: We included all emergency department (ED) admissions to University Hospital Inselspital, Berne, Switzerland, from January 1, 2000, until August 11, 2015, when the patient had suffered a trauma associated with somnambulism...
November 2016: Western Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27833536/patterns-of-activity-in-the-human-frontal-and-parietal-cortex-differentiate-large-and-small-saccades
#18
Marie-Hélène Grosbras
A vast literature indicates that small and large saccades, respectively, subserve different perceptual and cognitive strategies and may rely on different programming modes. While it is well-established that in monkeys' main oculomotor brain regions small and large eye movements are controlled by segregated neuronal populations, the representation of saccade amplitude in the human brain remains unclear. To address this question we used functional magnetic resonance imaging to scan participants while they performed saccades toward targets at either short (4°) or large (30°) eccentricity...
2016: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/27831838/clinical-radiologic-correlation-of-extraocular-eye-movement-disorders-seeing-beneath-the-surface
#19
Joshua Thatcher, Yu-Ming Chang, Margaret N Chapman, Keegan Hovis, Akifumi Fujita, Rachel Sobel, Osamu Sakai
Extraocular eye movement disorders are relatively common and may be a significant source of discomfort and morbidity for patients. The presence of restricted eye movement can be detected clinically with quick, easily performed, noninvasive maneuvers that assess medial, lateral, upward, and downward gaze. However, detecting the presence of ocular dysmotility may not be sufficient to pinpoint the exact cause of eye restriction. Imaging plays an important role in excluding, in some cases, and detecting, in others, a specific cause responsible for the clinical presentation...
November 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27819456/culture-shapes-spatial-frequency-tuning-for-face-identification
#20
Jessica Tardif, Daniel Fiset, Ye Zhang, Amanda Estéphan, Qiuju Cai, Canhuang Luo, Dan Sun, Frédéric Gosselin, Caroline Blais
Many studies have revealed cultural differences in the way Easterners and Westerners attend to their visual world. It has been proposed that these cultural differences reflect the utilization of different processes, namely holistic processes by Easterners and analytical processes by Westerners. In the face processing literature, eye movement studies have revealed different fixation patterns for Easterners and Westerners that are congruent with a broader spread of attention by Easterners: compared with Westerners, Easterners tend to fixate more toward the center of the face even if they need the information provided by the eyes and mouth...
November 7, 2016: Journal of Experimental Psychology. Human Perception and Performance
keyword
keyword
77889
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"