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https://www.readbyqxmd.com/read/29150646/body-size-estimation-in-women-with-anorexia-nervosa-and-healthy-controls-using-3d-avatars
#1
Katri K Cornelissen, Kristofor McCarty, Piers L Cornelissen, Martin J Tovée
A core feature of anorexia nervosa is an over-estimation of body size. However, quantifying this over-estimation has been problematic as existing methodologies introduce a series of artefacts and inaccuracies in the stimuli used for judgements of body size. To overcome these problems, we have: (i) taken 3D scans of 15 women who have symptoms of anorexia (referred to henceforth as anorexia spectrum disorders, ANSD) and 15 healthy control women, (ii) used a 3D modelling package to build avatars from the scans, (iii) manipulated the body shapes of these avatars to reflect biometrically accurate, continuous changes in body mass index (BMI), (iv) used these personalized avatars as stimuli to allow the women to estimate their body size...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29147922/the-effect-of-head-to-head-competition-on-behavioural-thermoregulation-thermophysiological-strain-and-performance-during-exercise-in-the-heat
#2
Jo Corbett, Danny K White, Martin J Barwood, Christopher R D Wagstaff, Michael J Tipton, Terry McMorris, Joseph T Costello
BACKGROUND: It has been suggested that pacing is a thermoregulatory behaviour. We investigated the effect of competition on pacing, performance and thermophysiological strain during exercise in the heat and the psychological factors mediating competition effects. METHOD: Eighteen males (maximum oxygen uptake [V O 2max] 3.69 [0.44] L min(-1)) undertook a preliminary 20-km cool (wet-bulb globe temperature [WBGT] 12 °C) cycling time trial (TT) and three experimental 20-km trials (balanced order): (i) cool TT (CoolSolo); (ii) hot (WBGT 26 °C) TT (HotSolo); (iii) hot head-to-head competition (HotH2H)...
November 17, 2017: Sports Medicine
https://www.readbyqxmd.com/read/29146376/wronger-than-wrong-graded-mapping-of-the-errors-of-an-avatar-in-the-performance-monitoring-system-of-the-onlooker
#3
G Spinelli, G Tieri, E F Pavone, S M Aglioti
EEG studies show that observing errors in one's own or others' actions triggers specific electro-cortical signatures in the onlooker's brain, but whether the brain error-monitoring system operates according to graded or discrete rules is still largely unknown. To explore this issue, we combined immersive virtual reality with EEG recording in participants who observed an avatar reaching-to-grasp a glass from a first-person perspective. The avatar could perform correct or erroneous actions. Erroneous grasps were defined as small or large depending on the magnitude of the trajectory deviation from the to-be-grasped glass...
November 13, 2017: NeuroImage
https://www.readbyqxmd.com/read/29140533/come-together-human-avatar-on-line-interactions-boost-joint-action-performance-in-apraxic-patients
#4
Matteo Candidi, Lucia M Sacheli, Vanessa Era, Loredana Canzano, Gaetano Tieri, Salvatore M Aglioti
Limb apraxia (LA) is a high-order motor disorder linked to left-hemisphere damage. It is characterized by defective execution of purposeful actions upon delayed imitation, or verbal command when the actions are performed in isolated, non-naturalistic, conditions. Whether interpersonal interactions provide social affordances that activate neural resources different from those requested by individual action execution, which may improve LA performance, is unknown. To fill this gap, we measured interaction performance, behavioral and kinematic indexes of left-brain damaged patients with/without LA in a social reach-to-grasp task involving two different degrees of spatio-temporal interactivity with an avatar...
November 1, 2017: Social Cognitive and Affective Neuroscience
https://www.readbyqxmd.com/read/29123516/avidity-and-bystander-suppressive-capacity-of-human-regulatory-t-cells-expressing-de-novo-autoreactive-t-cell-receptors-in-type-1-diabetes
#5
Wen-I Yeh, Howard R Seay, Brittney Newby, Amanda L Posgai, Filipa Botelho Moniz, Aaron Michels, Clayton E Mathews, Jeffrey A Bluestone, Todd M Brusko
The ability to alter antigen specificity by T-cell receptor (TCR) or chimeric antigen receptor (CAR) gene transfer has facilitated personalized cellular immune therapies in cancer. Inversely, this approach can be harnessed in autoimmune settings to attenuate inflammation by redirecting the specificity of regulatory T cells (Tregs). Herein, we demonstrate efficient protocols for lentiviral gene transfer of TCRs that recognize type 1 diabetes-related autoantigens with the goal of tissue-targeted induction of antigen-specific tolerance to halt β-cell destruction...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29117071/deception-improves-tt-performance-in-well-trained-cyclists-without-augmented-fatigue
#6
Paul Ansdell, Kevin Thomas, Glyn Howatson, Markus Amann, Stuart Goodall
PURPOSE: To investigate the effects of feedback, in the form of a virtual avatar paced at 100 and 102% of baseline performance, on neuromuscular fatigue following a 4 km cycling time trial (TT). We hypothesised that improved cycling performance would occur due to participants exceeding a previously established critical threshold, and experiencing greater neuromuscular fatigue. METHODS: Following familiarisation, ten well-trained cyclists performed a baseline 4 km TT without feedback (BASE), followed by two, 4 km TT where they raced against an avatar (set at 100% [accurate - ACC] and 102% [deception - DEC] of baseline power output), in a randomised and counterbalanced order...
November 7, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29101138/do-digital-innovations-for-hiv-and-sexually-transmitted-infections-work-results-from-a-systematic-review-1996-2017
#7
Jana Daher, Rohit Vijh, Blake Linthwaite, Sailly Dave, John Kim, Keertan Dheda, Trevor Peter, Nitika Pant Pai
OBJECTIVE: Digital innovations with internet/mobile phones offer a potential cost-saving solution for overburdened health systems with high service delivery costs to improve efficiency of HIV/STI (sexually transmitted infections) control initiatives. However, their overall evidence has not yet been appraised. We evaluated the feasibility and impact of all digital innovations for all HIV/STIs. DESIGN: Systematic review. SETTING/PARTICIPANTS: All settings/all participants...
November 3, 2017: BMJ Open
https://www.readbyqxmd.com/read/29082532/the-impact-of-death-awareness-on-sizes-of-self-representational-objects
#8
Simon McCabe, Kenneth E Vail, Jamie Arndt
People seem to have a tendency to increase the relative size of self-representational objects. Prior research suggests that motivational factors may fuel that tendency, so the present research built from terror management theory to examine whether existential motivations - engendered by concerns about death - may have similar implications for self-relevant size biases. Specifically, across two studies (total N = 288), we hypothesized that reminders of death would lead participants to inflate the size of self-representational objects...
October 30, 2017: British Journal of Social Psychology
https://www.readbyqxmd.com/read/29076518/abstracts-from-the-6th-annual-congress-of-the-association-of-vascular-access-and-interventional-renal-physicians-avatar
#9
(no author information available yet)
Abstracts from the 6th Annual Congress of the Association of Vascular Access and Interventional Renal Physicians (AVATAR) | July 21-22, 2017 | Goa, India.
October 25, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/29068860/validating-a-method-to-assess-lipreading-audiovisual-gain-and-integration-during-speech-reception-with-cochlear-implanted-and-normal-hearing-subjects-using-a-talking-head
#10
Stefan Schreitmüller, Miriam Frenken, Lüder Bentz, Magdalene Ortmann, Martin Walger, Hartmut Meister
OBJECTIVES: Watching a talker's mouth is beneficial for speech reception (SR) in many communication settings, especially in noise and when hearing is impaired. Measures for audiovisual (AV) SR can be valuable in the framework of diagnosing or treating hearing disorders. This study addresses the lack of standardized methods in many languages for assessing lipreading, AV gain, and integration. A new method is validated that supplements a German speech audiometric test with visualizations of the synthetic articulation of an avatar that was used, for it is feasible to lip-sync auditory speech in a highly standardized way...
October 24, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/29057376/p2y12-receptor-function-and-response-to-cangrelor-in-neonates-with-cyanotic-congenital-heart-disease
#11
Elisabeth A Kaza, Matthew C Egalka, Hairu Zhou, Jianchun Chen, Denise Evans, Jayne Prats, Ruizhi Li, Scott L Diamond, Julie A Vincent, Emile A Bacha, Thomas G Diacovo
Shunt thrombosis remains a major cause of morbidity and mortality, especially during the initial palliation for single-ventricle physiology. The authors present evidence that the P2Y12 inhibitor cangrelor may fill a therapeutic void in thromboprophylaxis. They base this theory on results showing that platelets from neonatal patients with cyanotic congenital heart disease have a robust response to adenosine diphosphate and are amenable to P2Y12 inhibition with cangrelor. Unique to this study was their ability to establish drug efficacy in an avatar mouse model that permits the in vivo evaluation of human platelet-mediated thrombus formation illustrating that this P2Y12 inhibitor yields the intended biological response...
August 2017: JACC. Basic to Translational Science
https://www.readbyqxmd.com/read/29056609/adjunctive-avatar-therapy-for-mentalization-based-treatment-of-borderline-personality-disorder-a-mixed-methods-feasibility-study
#12
Caroline J Falconer, Penny Cutting, E Bethan Davies, Chris Hollis, Paul Stallard, Paul Moran
BACKGROUND: Borderline personality disorder (BPD) is characterised by severe instability in emotions, identity, relationships and impulsive behaviour. One contributing factor to BPD is deficient mentalizing-our ability to understand the mental states of others and ourselves. Psychotherapies can be effective at reducing symptoms of BPD but effects are small. Innovative ways of enhancing existing therapies are therefore essential. OBJECTIVE: In a mixed-methods, feasibility and acceptability study, we adjuncted conventional mentalization-based treatment (MBT) for BPD with avatar software (avatar-MBT)...
October 22, 2017: Evidence-based Mental Health
https://www.readbyqxmd.com/read/29040934/calibration-to-tool-use-during-visually-guided-reaching
#13
Brian Day, Elham Ebrahimi, Leah S Hartman, Christopher C Pagano, Sabarish V Babu
In studying human perception and performance researchers must understand how the body schema is modified to accurately represent one's capabilities when tools are used, as humans use tools that alter their capabilities frequently. The present work tested the idea that calibration is responsible for modifying an embodied action schema during tool use. We investigated calibration in the context of manual activity in near space through a behavioral measure. Participants made blind reaches to various visual distances in pre- and post-test phases using a short tool that did not extend their reach...
October 14, 2017: Acta Psychologica
https://www.readbyqxmd.com/read/29018636/detecting-dementia-through-interactive-computer-avatars
#14
Hiroki Tanaka, Hiroyoshi Adachi, Norimichi Ukita, Manabu Ikeda, Hiroaki Kazui, Takashi Kudo, Satoshi Nakamura
This paper proposes a new approach to automatically detect dementia. Even though some works have detected dementia from speech and language attributes, most have applied detection using picture descriptions, narratives, and cognitive tasks. In this paper, we propose a new computer avatar with spoken dialog functionalities that produces spoken queries based on the mini-mental state examination, the Wechsler memory scale-revised, and other related neuropsychological questions. We recorded the interactive data of spoken dialogues from 29 participants (14 dementia and 15 healthy controls) and extracted various audiovisual features...
2017: IEEE Journal of Translational Engineering in Health and Medicine
https://www.readbyqxmd.com/read/28994823/a-multilayer-network-dataset-of-interaction-and-influence-spreading-in-a-virtual-world
#15
Jarosław Jankowski, Radosław Michalski, Piotr Bródka
Presented data contains the record of five spreading campaigns that occurred in a virtual world platform. Users distributed avatars between each other during the campaigns. The processes varied in time and range and were either incentivized or not incentivized. Campaign data is accompanied by events. The data can be used to build a multilayer network to place the campaigns in a wider context. To the best of the authors' knowledge, the study is the first publicly available dataset containing a complete real multilayer social network together, along with five complete spreading processes in it...
October 10, 2017: Scientific Data
https://www.readbyqxmd.com/read/28966600/beyond-behavioral-inhibition-a-computer-avatar-task-designed-to-assess-behavioral-inhibition-extends-to-harm-avoidance
#16
Michael Todd Allen, Molly M Jameson, Catherine E Myers
Personality factors such as behavioral inhibition (BI), a temperamental tendency for avoidance in the face of unfamiliar situations, have been identified as risk factors for anxiety disorders. Personality factors are generally identified through self-report inventories. However, this tendency to avoid may affect the accuracy of these self-report inventories. Previously, a computer based task was developed in which the participant guides an on-screen "avatar" through a series of onscreen events; performance on the task could accurately predict participants' BI, measured by a standard paper and pencil questionnaire (Adult Measure of Behavioral Inhibition, or AMBI)...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28957344/functional-hemispheric-asymmetries-during-the-planning-and-manual-control-of-virtual-avatar-movements
#17
Mareike Floegel, Christian Alexander Kell
Both hemispheres contribute to motor control beyond the innervation of the contralateral alpha motoneurons. The left hemisphere has been associated with higher-order aspects of motor control like sequencing and temporal processing, the right hemisphere with the transformation of visual information to guide movements in space. In the visuomotor context, empirical evidence regarding the latter has been limited though the right hemisphere's specialization for visuospatial processing is well-documented in perceptual tasks...
2017: PloS One
https://www.readbyqxmd.com/read/28955259/a-combination-of-outcome-and-process-feedback-enhances-performance-in-simulations-of-child-sexual-abuse-interviews-using-avatars
#18
Francesco Pompedda, Jan Antfolk, Angelo Zappalà, Pekka Santtila
Simulated interviews in alleged child sexual abuse (CSA) cases with computer-generated avatars paired with feedback improve interview quality. In the current study, we aimed to understand better the effect of different types of feedback in this context. Feedback was divided into feedback regarding conclusions about what happened to the avatar (outcome feedback) and feedback regarding the appropriateness of question-types used by the interviewer (process feedback). Forty-eight participants each interviewed four different avatars...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28947782/microchamber-cultures-of-bladder-cancer-a-platform-for-characterizing-drug-responsiveness-and-resistance-in-pdx-and-primary-cancer-cells
#19
Pantea Gheibi, Shuxiong Zeng, Kyung Jin Son, Tam Vu, Ai-Hong Ma, Marc A Dall'Era, Stanley Alexander Yap, Ralph W de Vere White, Chong-Xian Pan, Alexander Revzin
Precision cancer medicine seeks to target the underlying genetic alterations of cancer; however, it has been challenging to use genetic profiles of individual patients in identifying the most appropriate anti-cancer drugs. This spurred the development of patient avatars; for example, patient-derived xenografts (PDXs) established in mice and used for drug exposure studies. However, PDXs are associated with high cost, long development time and low efficiency of engraftment. Herein we explored the use of microfluidic devices or microchambers as simple and low-cost means of maintaining bladder cancer cells over extended periods of times in order to study patterns of drug responsiveness and resistance...
September 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28936191/mentalizing-another-s-visual-world-a-novel-exploration-via-motion-aftereffect
#20
Xuefei Yuan, Nanbo Wang, Haiyan Geng, Shen Zhang
Past research on level 2 visual perspective-taking (VPT) has mostly focused on understanding the mental rotation involved when one adopts others' perspective; the mechanisms underlying how the visual world of others is mentally represented remain unclear. In three studies, we addressed this question by adopting a novel VPT task with motion stimuli and exploring the aftereffect on motion discrimination from the self-perspective. Overall the results showed a facilitation aftereffect when participants were instructed to take the avatar's perspective...
2017: Frontiers in Psychology
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