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https://www.readbyqxmd.com/read/27932962/neural-differences-between-covert-and-overt-attention-studied-using-eeg-with-simultaneous-remote-eye-tracking
#1
Louisa V Kulke, Janette Atkinson, Oliver Braddick
Research on neural mechanisms of attention has generally instructed subjects to direct attention covertly while maintaining a fixed gaze. This study combined simultaneous eye tracking and electroencephalogram (EEG) to measure neural attention responses during exogenous cueing in overt attention shifts (with saccadic eye movements to a target) and compared these with covert attention shifts (responding manually while maintaining central fixation). EEG analysis of the period preceding the saccade latency showed similar occipital response amplitudes for overt and covert shifts, although response latencies differed...
2016: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/27931846/gaze-control-as-prediction
#2
REVIEW
John M Henderson
The recent study of overt attention during complex scene viewing has emphasized explaining gaze behavior in terms of image properties and image salience independently of the viewer's intentions and understanding of the scene. In this Opinion article, I outline an alternative approach proposing that gaze control in natural scenes can be characterized as the result of knowledge-driven prediction. This view provides a theoretical context for integrating and unifying many of the disparate phenomena observed in active scene viewing, offers the potential for integrating the behavioral study of gaze with the neurobiological study of eye movements, and provides a theoretical framework for bridging gaze control and other related areas of perception and cognition at both computational and neurobiological levels of analysis...
December 5, 2016: Trends in Cognitive Sciences
https://www.readbyqxmd.com/read/27931196/attentional-bias-modification-in-depression-through-gaze-contingencies-and-regulatory-control-using-a-new-eye-tracking-intervention-paradigm-study-protocol-for-a-placebo-controlled-trial
#3
Carmelo Vazquez, Ivan Blanco, Alvaro Sanchez, Richard J McNally
BACKGROUND: Attentional biases, namely difficulties both to disengage attention from negative information and to maintain it on positive information, play an important role in the onset and maintenance of the disorder. Recently, researchers have developed specific attentional bias modification (ABM) techniques aimed to modify these maladaptive attentional patterns. However, the application of current ABM procedures has yielded, so far, scarce results in depression due, in part, to some methodological shortcomings...
December 8, 2016: BMC Psychiatry
https://www.readbyqxmd.com/read/27928745/perceived-emotion-genuineness-normative-ratings-for-popular-facial-expression-stimuli-and-the-development-of-perceived-as-genuine-and-perceived-as-fake-sets
#4
Amy Dawel, Luke Wright, Jessica Irons, Rachael Dumbleton, Romina Palermo, Richard O'Kearney, Elinor McKone
In everyday social interactions, people's facial expressions sometimes reflect genuine emotion (e.g., anger in response to a misbehaving child) and sometimes do not (e.g., smiling for a school photo). There is increasing theoretical interest in this distinction, but little is known about perceived emotion genuineness for existing facial expression databases. We present a new method for rating perceived genuineness using a neutral-midpoint scale (-7 = completely fake; 0 = don't know; +7 = completely genuine) that, unlike previous methods, provides data on both relative and absolute perceptions...
December 7, 2016: Behavior Research Methods
https://www.readbyqxmd.com/read/27928383/late-onset-development-of-eyelid-ptosis-in-chronic-progressive-external-ophthalmoplegia-a-30-year-follow-up
#5
Jennifer Murdock, Preeti J Thyparampil, Michael T Yen
Chronic progressive external ophthalmoplegia (CPEO) is a mitochondrial myopathy with slowly progressive, often symmetric blepharoptosis and limitation of ocular motility in all directions of gaze. The authors present an unusual case of CPEO that initially presented with the unique features of markedly asymmetric facial weakness and the lack of blepharoptosis. However, over the subsequent three decades, the patient developed progressive facial and eyelid dysfunction more consistent with a classical description of CPEO...
February 2016: Neuro-ophthalmology
https://www.readbyqxmd.com/read/27928380/facial-dystonia-with-facial-grimacing-and-vertical-gaze-palsy-with-round-the-houses-sign-in-a-29-year-old-woman
#6
J Crespi, G Bråthen, P Quist-Paulsen, J Pagonabarraga, C Roig-Arnall
A 29-year-old woman developed progressive dysarthria and coordination problems from the age of 15. Examination showed dysarthria, facial dystonia, bibrachial dystonia, hyperreflexia, ataxia, and emotional incontinence. Downward supranuclear gaze palsy was prominent with a "Round the Houses" sign. Magnetic resonance imaging of the brain and medulla, electroneurography, and cerebrospinal fluid were normal. A computed tomography scan showed hepatosplenomegaly. This combination of progressive neurological symptoms together with hepatosplenomegaly was suggestive of inborn error of metabolism...
February 2016: Neuro-ophthalmology
https://www.readbyqxmd.com/read/27927777/internuclear-ophthalmoplegia
#7
Jonathan D Virgo, Gordon T Plant
A brainstem lesion of any type that involves the medial longitudinal fasciculus (MLF) can cause internuclear ophthalmoplegia (INO). This primarily affects conjugate horizontal gaze and classically manifests as impaired adduction ipsilateral to the lesion and abduction nystagmus contralateral to the lesion. Here, we describe the anatomy of the MLF and review the clinical features of INO. We also describe conjugate horizontal gaze palsy and some of the 'INO-plus' syndromes.
December 7, 2016: Practical Neurology
https://www.readbyqxmd.com/read/27926920/infants-looking-to-surprising-events-when-eye-tracking-reveals-more-than-looking-time
#8
H Henny Yeung, Stephanie Denison, Scott P Johnson
Research on infants' reasoning abilities often rely on looking times, which are longer to surprising and unexpected visual scenes compared to unsurprising and expected ones. Few researchers have examined more precise visual scanning patterns in these scenes, and so, here, we recorded 8- to 11-month-olds' gaze with an eye tracker as we presented a sampling event whose outcome was either surprising, neutral, or unsurprising: A red (or yellow) ball was drawn from one of three visible containers populated 0%, 50%, or 100% with identically colored balls...
2016: PloS One
https://www.readbyqxmd.com/read/27923928/visual-sampling-predicts-hippocampal-activity
#9
Zhong-Xu Liu, Kelly Shen, Rosanna K Olsen, Jennifer D Ryan
: Eye movements serve to accumulate information from the visual world, contributing to the formation of coherent memory representations that support cognition and behaviour. The hippocampus and the oculomotor network are well connected anatomically through an extensive set of polysynaptic pathways. However, the extent to which visual sampling behaviour is related to functional responses in the hippocampus during encoding has not been directly studied in human neuroimaging. In the current study, participants engaged in a face processing task while brain responses were recorded with functional magnetic resonance imaging (fMRI) and eye movements were simultaneously monitored...
December 6, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27923726/single-stage-soft-tissue-reconstruction-and-orbital-fracture-repair-for-complex-facial-injuries
#10
Peng Sen Wu, Reshvin Matoo, Hong Sun, Li Yuan Song, Don O Kikkawa, Wei Lu
BACKGROUND: Orbital fractures with open periorbital wounds cause significant morbidity. Timing of debridement with fracture repair and soft tissue reconstruction is controversial. This study focuses on the efficacy of early single-stage repair in combined bony and soft tissue injuries. METHODS: Retrospective review. Twenty-three patients with combined open soft tissue wounds and orbital fractures were studied for single-stage orbital reconstruction and periorbital soft tissue repair...
November 11, 2016: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/27922101/social-determinants-of-eyeblinks-in-adult-male-macaques
#11
Sébastien Ballesta, Clayton P Mosher, Jeno Szep, Kate D Fischl, Katalin M Gothard
Videos with rich social and emotional content elicit natural social behaviors in primates. Indeed, while watching videos of conspecifics, monkeys engage in eye contact, gaze follow, and reciprocate facial expressions. We hypothesized that the frequency and timing of eyeblinks also depends on the social signals contained in videos. We monitored the eyeblinks of four male adult macaques while they watched videos of conspecifics displaying facial expressions with direct or averted gaze. The instantaneous blink rate of all four animals decreased during videos...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27921204/a-case-of-double-depressor-palsy-followed-by-pursuit-deficit-due-to-sequential-infarction-in-bilateral-thalamus-and-right-medial-superior-temporal-area
#12
Su Jin Kim, Myeong In Yeom, Seung Uk Lee
BACKGROUND: We present a unique case of a patient who suffered two rare events affecting the supranuclear control, first of the vertical and second of the horizontal eye movements. The first event involved bilateral thalamic infarcts that resulted in double depressor palsy. The second event occurred 1 year later and it involved supranuclear control of horizontal eye movements creating pursuit deficit. CASE PRESENTATION: A 47-year-old male presented with complaints of diplopia upon awakening...
December 5, 2016: International Ophthalmology
https://www.readbyqxmd.com/read/27917921/exploring-the-relationship-between-eye-movements-and-electrocardiogram-interpretation-accuracy
#13
Alan Davies, Gavin Brown, Markel Vigo, Simon Harper, Laura Horseman, Bruno Splendiani, Elspeth Hill, Caroline Jay
Interpretation of electrocardiograms (ECGs) is a complex task involving visual inspection. This paper aims to improve understanding of how practitioners perceive ECGs, and determine whether visual behaviour can indicate differences in interpretation accuracy. A group of healthcare practitioners (n = 31) who interpret ECGs as part of their clinical role were shown 11 commonly encountered ECGs on a computer screen. The participants' eye movement data were recorded as they viewed the ECGs and attempted interpretation...
December 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27917105/eeg-negativity-in-fixations-used-for-gaze-based-control-toward-converting-intentions-into-actions-with-an-eye-brain-computer-interface
#14
Sergei L Shishkin, Yuri O Nuzhdin, Evgeny P Svirin, Alexander G Trofimov, Anastasia A Fedorova, Bogdan L Kozyrskiy, Boris M Velichkovsky
We usually look at an object when we are going to manipulate it. Thus, eye tracking can be used to communicate intended actions. An effective human-machine interface, however, should be able to differentiate intentional and spontaneous eye movements. We report an electroencephalogram (EEG) marker that differentiates gaze fixations used for control from spontaneous fixations involved in visual exploration. Eight healthy participants played a game with their eye movements only. Their gaze-synchronized EEG data (fixation-related potentials, FRPs) were collected during game's control-on and control-off conditions...
2016: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/27916510/effect-of-upgaze-on-lower-eyelid-position-in-korean-patients-with-congenital-ptosis
#15
Livia Teo, Sang Yeul Lee, Chang Yeom Kim
PURPOSE: The purpose of this study was to demonstrate accompanying clinical features besides lid droop in congenital ptosis and to determine the effect of upgaze on lower eyelid position in patients with congenital ptosis. METHODS: Pediatric patients with congenital ptosis who visited our clinic over a 1-month period in 2014 were recruited for this study. Clinical photographs and measurements were taken prospectively in primary gaze and upgaze. Measurements taken from photographs and clinical records include inferior scleral show (ISS), vertical lower lid height (LL), and canthal tilt angle (CTA)...
November 11, 2016: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/27915581/ftld-tdp-and-progressive-supranuclear-palsy-in-comorbidity-a-report-of-two-cases-with-different-clinical-presentations
#16
Kateřina Storey, Silvie Johanidesová, Radoslav Matěj, Jiří Keller, Zdeněk Rohan, Robert Rusina
Frontotemporal lobar degeneration with transactive response DNA-binding protein 43 (FTLD-TDP) and progressive supranuclear palsy (PSP) are distinct neurodegenerations with different clinical presentations. We report two cases with FTLD-TDP and PSP in comorbidity: a patient with amnestic dementia developing frontal lobe dementia, Parkinsonism and supranuclear gaze palsy and a patient with cerebellar ataxia and nystagmus developing akinesia, rigidity, and subcortical dementia. Neuropathological examination revealed neuronal and glial tau pathology together with ubiquitin, and phospho-TDP-43-immunoreactivities in the hippocampus, striatum, mesencephalon, and frontal and temporal cortices...
December 3, 2016: Neurocase
https://www.readbyqxmd.com/read/27914318/older-adults-attentional-deployment-differential-gaze-patterns-for-different-negative-mood-states
#17
Ineke Demeyer, Alvaro Sanchez, Rudi De Raedt
BACKGROUND AND OBJECTIVES: Older adults are characterized by an attentional preference for positive over negative information. Since this positivity effect is considered to be an emotion regulation strategy, it should be more pronounced when emotion regulation is needed. In contrast to previous studies that focused on the effects of sad mood on attention, we used a stressor to activate emotion regulation and evaluate the effects of different types of mood state changes. Moreover, we evaluated mood effects on attentional processes using a paradigm that allows disentangling between different attentional engagement and disengagement processes...
November 24, 2016: Journal of Behavior Therapy and Experimental Psychiatry
https://www.readbyqxmd.com/read/27912859/alienation-and-alterity-age-in-the-existentialist-discourse-on-others
#18
Harm-Peer Zimmermann
Aging Studies and Postcolonial Studies belong together in a rather fundamental way, given that they share profound theoretical roots and far-reaching critical perspectives. These derive not only from the more recent poststructuralist discourse on others but also, further back, from the existentialist discourse on others - particularly in issues relating to "The Look" as elaborated by Jean-Paul Sartre in his major philosophical treatise Being and Nothingness and in his reflections on racism, colonialism and humanism...
December 2016: Journal of Aging Studies
https://www.readbyqxmd.com/read/27910902/prior-knowledge-facilitates-mutual-gaze-convergence-and-head-nodding-synchrony-in-face-to-face-communication
#19
C Thepsoonthorn, T Yokozuka, S Miura, K Ogawa, Y Miyake
As prior knowledge is claimed to be an essential key to achieve effective education, we are interested in exploring whether prior knowledge enhances communication effectiveness. To demonstrate the effects of prior knowledge, mutual gaze convergence and head nodding synchrony are observed as indicators of communication effectiveness. We conducted an experiment on lecture task between lecturer and student under 2 conditions: prior knowledge and non-prior knowledge. The students in prior knowledge condition were provided the basic information about the lecture content and were assessed their understanding by the experimenter before starting the lecture while the students in non-prior knowledge had none...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27910232/strategies-of-readers-with-autism-when-responding-to-inferential-questions-an-eye-movement-study
#20
Martina Micai, Holly Joseph, Mila Vulchanova, David Saldaña
Previous research suggests that individuals with autism spectrum disorder (ASD) have difficulties with inference generation in reading tasks. However, most previous studies have examined how well children understand a text after reading or have measured on-line reading behavior without response to questions. The aim of this study was to investigate the online strategies of children and adolescents with autism during reading and at the same time responding to a question by monitoring their eye movements. The reading behavior of participants with ASD was compared with that of age-, language-, nonverbal intelligence-, reading-, and receptive language skills-matched participants without ASD (control group)...
December 2, 2016: Autism Research: Official Journal of the International Society for Autism Research
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