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https://www.readbyqxmd.com/read/28641259/face-hallucination-using-linear-models-of-coupled-sparse-support
#1
Reuben A Farrugia, Christine Guillemot
Most face super-resolution methods assume that low- and high-resolution manifolds have similar local geometrical structure, hence learn local models on the low-resolution manifold (e.g. sparse or locally linear embedding models), which are then applied on the high- resolution manifold. However, the low-resolution manifold is distorted by the one-to-many relationship between low- and high- resolution patches. This paper presents the Linear Model of Coupled Sparse Support (LM-CSS) method which learns linear models based on the local geometrical structure on the high-resolution manifold rather than on the low-resolution manifold...
June 19, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28641251/robust-face-recognition-with-kernelized-locality-sensitive-group-sparsity-representation
#2
Shoubiao Tan, Xi Sun, Wentao Chan, Lei Qu, Ling Shao
In this paper, a novel joint sparse representation method is proposed for robust face recognition. We embed both group sparsity and kernelized locality-sensitive constraints into the framework of sparse representation. The group sparsity constraint is designed to utilize the grouped structure information in the training data. The local similarity between test and training data is measured in the kernel space instead of the Euclidian space. As a result, the embedded nonlinear information can be effectively captured, leading to a more discriminative representation...
June 15, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28640836/craniofacial-similarity-analysis-through-sparse-principal-component-analysis
#3
Junli Zhao, Fuqing Duan, Zhenkuan Pan, Zhongke Wu, Jinhua Li, Qingqiong Deng, Xiaona Li, Mingquan Zhou
The computer-aided craniofacial reconstruction (CFR) technique has been widely used in the fields of criminal investigation, archaeology, anthropology and cosmetic surgery. The evaluation of craniofacial reconstruction results is important for improving the effect of craniofacial reconstruction. Here, we used the sparse principal component analysis (SPCA) method to evaluate the similarity between two sets of craniofacial data. Compared with principal component analysis (PCA), SPCA can effectively reduce the dimensionality and simultaneously produce sparse principal components with sparse loadings, thus making it easy to explain the results...
2017: PloS One
https://www.readbyqxmd.com/read/28640708/medulloblastoma-from-myth-to-molecular
#4
Vijay Ramaswamy, Michael D Taylor
Current therapies for medulloblastoma were introduced primarily in the 1980s and consist of predominantly cytotoxic, nontargeted approaches. Mortality from medulloblastoma remains significant. In addition, many survivors suffer from severe treatment-related effects of radiation and cytotoxic chemotherapy. Further intensification of nonspecific therapy is unlikely to offer additional benefits, because survival rates have reached a plateau. Recent publications in medulloblastoma have revolved largely around the recognition that medulloblastoma per se does not exist, but rather, that there are a group of histologically similar but clinically and molecularly distinct entities that have been grouped under that rubric...
June 22, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28637285/a-qualitative-study-of-the-impact-of-endometriosis-on-male-partners
#5
L Culley, C Law, N Hudson, H Mitchell, E Denny, N Raine-Fenning
STUDY QUESTION: What is the impact of endometrioses on male partners of women with the condition? SUMMARY ANSWER: Endometriosis significantly impacts men across several life domains and can negatively impact emotional well-being. WHAT IS KNOWN ALREADY: Endometriosis has been shown to negatively impact women's quality of life and may strain intimate relationships. Little is known about the impact on male partners. STUDY DESIGN, SIZE, DURATION: The ENDOPART study was a cross-sectional, qualitative study of 22 women with endometriosis and their male partners (n = 44) in the UK (2012-2013)...
June 15, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28637173/crystallographic-analyses-illustrate-significant-plasticity-and-efficient-recoding-of-meganuclease-target-specificity
#6
Rachel Werther, Jazmine P Hallinan, Abigail R Lambert, Kyle Havens, Mark Pogson, Jordan Jarjour, Roberto Galizi, Nikolai Windbichler, Andrea Crisanti, Tony Nolan, Barry L Stoddard
The retargeting of protein-DNA specificity, outside of extremely modular DNA binding proteins such as TAL effectors, has generally proved to be quite challenging. Here, we describe structural analyses of five different extensively retargeted variants of a single homing endonuclease, that have been shown to function efficiently in ex vivo and in vivo applications. The redesigned proteins harbor mutations at up to 53 residues (18%) of their amino acid sequence, primarily distributed across the DNA binding surface, making them among the most significantly reengineered ligand-binding proteins to date...
June 20, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28633887/visual-integration-of-fear-and-anger-emotional-cues-by-children-on-the-autism-spectrum-and-neurotypical-peers-an-eeg-study
#7
Evie Malaia, Debbie Cockerham, Katherine Rublein
Communication deficits in children with autism spectrum disorders (ASD) are often related to inefficient interpretation of emotional cues, which are conveyed visually through both facial expressions and body language (Apicella et al., 2012). The present study examined ASD behavioral and ERP responses to emotional expressions of anger and fear, as conveyed by the face and body. Behavioral results showed significantly faster response times for the ASD than for the typically developing (TD) group when processing fear, but not anger, in isolated face expressions, isolated body expressions, and in the integration of the two...
June 17, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28633582/dopamine-and-light-effects-on-facial-emotion-recognition
#8
Elizabeth Cawley, Maria Tippler, Nicholas J Coupland, Chawki Benkelfat, Diane B Boivin, Marije Aan Het Rot, Marco Leyton
Bright light can affect mood states and social behaviours. Here, we tested potential interacting effects of light and dopamine on facial emotion recognition. Participants were 32 women with subsyndromal seasonal affective disorder tested in either a bright (3000 lux) or dim light (10 lux) environment. Each participant completed two test days, one following the ingestion of a phenylalanine/tyrosine-deficient mixture and one with a nutritionally balanced control mixture, both administered double blind in a randomised order...
June 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28629540/kinetics-and-dose-dependency-of-intranasal-oxytocin-effects-on-amygdala-reactivity
#9
Franny B Spengler, Johannes Schultz, Dirk Scheele, Maximiliane Essel, Wolfgang Maier, Markus Heinrichs, René Hurlemann
BACKGROUND: Current neuroimaging perspectives on a variety of mental disorders emphasize dysfunction of the amygdala. The neuropeptide oxytocin (OXT), a key mediator in the regulation of social cognition and behavior, accumulates in cerebrospinal fluid after intranasal administration in macaques and humans and modulates amygdala reactivity in both species. However, the translation of neuromodulatory OXT effects to novel treatment approaches is hampered by the absence of studies defining the most effective dose and dose-response latency for targeting the amygdala...
May 10, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/28625117/factors-associated-to-health-care-service-use-among-latino-day-laborers
#10
Javier Francisco Boyas, Nalini Junko Negi, Pamela Valera
Latino day laborers (LDLs) are at elevated risks for disease and injury because of the environments in which they work. Despite this recognition, a comprehensive examination of factors related to LDLs' health service use remains unexamined. Using the Andersen model, the current exploratory study examined predisposing (age, education level, location of educational training, legal status, and marital status), enabling (income, trust in medical personnel, whether the respondent has someone they consider their personal doctor, and whether their doctor speaks the same language, perceived barriers to care), and need (self-rated health, number of chronic conditions) variables to predict use of health services among a purposive sample of LDLs ( N = 150)...
July 2017: American Journal of Men's Health
https://www.readbyqxmd.com/read/28624995/how-does-it-feel-to-be-a-pathology-resident-results-of-a-survey-on-experiences-and-job-satisfaction-during-pathology-residency
#11
Burcin Pehlivanoglu, Hur Hassoy, Catarina Calle, Amelie Dendooven, ILKe Nalbantoglu, Lidiya Reshchikova, Gulen Gul, Basak Doganavsargil
Residents' career choices and professional motivation can be affected from perception of their role and recognition within a medical team as well as their educational and workplace experiences. To evaluate pathology trainees' perceptions of their pathology residency, we conducted a 42-item survey via a web-based link questioning respondents' personal and institutional background, workplace, training conditions, and job satisfaction level. For the 208 residents from different European countries who responded, personal expectations in terms of quality of life (53%) and scientific excitement (52%) were the most common reasons why they chose and enjoy pathology...
June 17, 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/28624595/atypical-perceptual-processing-of-faces-in-developmental-dyslexia
#12
Yafit Gabay, Eva Dundas, David Plaut, Marlene Behrmann
Developmental Dyslexia (DD) is often attributed to phonological processing deficits. Recent evidence, however, indicates the need for a more general explanatory framework to account for DD's range of deficits. The current study examined the specificity versus domain generality of DD by comparing the recognition and discrimination of three visual categories (faces and words with cars as control stimuli) in typical and dyslexic readers. Relative to controls, not only did dyslexic individuals perform more poorly on word recognition, but they also matched faces more slowly, especially when the faces differed in viewpoint, and discriminated between similar faces (but not cars) more poorly...
June 15, 2017: Brain and Language
https://www.readbyqxmd.com/read/28619550/new-discoveries-in-the-pathogenesis-and-classification-of-vitiligo
#13
REVIEW
Michelle Rodrigues, Khaled Ezzedine, Iltefat Hamzavi, Amit G Pandya, John E Harris
Vitiligo is a common autoimmune disease that progressively destroys melanocytes in the skin, resulting in the appearance of patchy depigmentation. This disfiguring condition frequently affects the face and other visible areas of the body, which can be psychologically devastating. The onset of vitiligo often occurs in younger individuals and progresses for life, resulting in a heavy burden of disease and decreased quality of life. Presentation patterns of vitiligo vary, and recognition of these patterns provides both diagnostic and prognostic clues...
July 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28618296/impaired-body-perception-in-developmental-prosopagnosia
#14
Federica Biotti, Katie L H Gray, Richard Cook
Developmental prosopagnosia (DP) is a lifelong neurodevelopmental disorder associated with difficulties recognising and discriminating faces. In some cases, the perceptual deficits seen in DP appear to be face-specific. However, DP is known to be a heterogeneous condition, and many cases undoubtedly exhibit impaired perception of other complex objects. There are several well-documented parallels between body and face perception; for example, faces and bodies are both thought to recruit holistic analysis and engage similar regions of visual cortex...
May 25, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28617928/expectation-modulates-repetition-priming-under-high-stimulus-variability
#15
Maria Olkkonen, Geoffrey K Aguirre, Russell A Epstein
Neural responses to stimuli are often attenuated by repeated presentation. When observed in blood oxygen level-dependent signals, this attenuation is known as fMRI adaptation (fMRIa) or fMRI repetition suppression. According to a prominent account, fMRIa reflects the fulfillment of perceptual expectations during recognition of repeated items (Summerfield, Trittschuh, Monti, Mesulam, & Egner, 2008). Supporting this idea, expectation has been shown to modulate fMRIa under some circumstances; however, it is not currently known whether expectation similarly modulates recognition performance...
June 1, 2017: Journal of Vision
https://www.readbyqxmd.com/read/28615487/cognitive-specialization-for-learning-faces-is-associated-with-shifts-in-the-brain-transcriptome-of-a-social-wasp
#16
Ali J Berens, Elizabeth A Tibbetts, Amy L Toth
The specialized ability to learn and recall individuals based on distinct facial features is known in only a few, large-brained social taxa. Social paper wasps in the genus Polistes are the only insects known to possess this form of cognitive specialization. We analyzed genome-wide brain gene expression during facial and pattern training for two species of paper wasps (P. fuscatus, which has face recognition, and P. metricus, which does not) using RNA sequencing. We identified 237 transcripts associated with face specialization in P...
June 15, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28614490/empathic-skills-and-theory-of-mind-in-female-adolescents-with-conduct-disorder
#17
Olber E Arango Tobón, Antonio Olivera-La Rosa, Viviana Restrepo Tamayo, Isabel C Puerta Lopera
Objective: Most studies on conduct disorder (CD) have focused on male adolescents, disregarding analysis of this psychopathology in women. The purpose of this study was to identify differences in empathy and theory of mind (ToM) in a group of adolescent women with CD and a control group. Method: Thirty-six adolescent women were selected from an initial sample of 239 adolescents (CD group = 18, control group = 18). Empathy and ToM were evaluated through objective instruments...
June 12, 2017: Revista Brasileira de Psiquiatria
https://www.readbyqxmd.com/read/28613171/simultaneous-feature-and-dictionary-learning-for-image-set-based-face-recognition
#18
Jiwen Lu, Gang Wang, Jie Zhou
In this paper, we propose a simultaneous feature and dictionary learning (SFDL) method for image set based face recognition, where each training and testing example contains a set of face images which were captured from different variations of pose, illumination, expression, resolution and motion. While a variety of feature learning and dictionary learning methods have been proposed in recent years and some of them have been successfully applied to image set based face recognition, most of them learn features and dictionaries for facial image sets individually, which may not be powerful enough because some discriminative information for dictionary learning may be compromised in the feature learning stage if they are applied sequentially, and vice versa...
June 8, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28612935/early-adversity-and-brain-response-to-faces-in-young-adulthood
#19
Johannes Lieslehto, Vesa Kiviniemi, Pirjo Mäki, Jenni Koivukangas, Tanja Nordström, Jouko Miettunen, Jennifer H Barnett, Peter B Jones, Graham K Murray, Irma Moilanen, Tomáš Paus, Juha Veijola
Early stressors play a key role in shaping interindividual differences in vulnerability to various psychopathologies, which according to the diathesis-stress model might relate to the elevated glucocorticoid secretion and impaired responsiveness to stress. Furthermore, previous studies have shown that individuals exposed to early adversity have deficits in emotion processing from faces. This study aims to explore whether early adversities associate with brain response to faces and whether this association might associate with the regional variations in mRNA expression of the glucocorticoid receptor gene (NR3C1)...
June 14, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28612374/measuring-mimicry-general-corticospinal-facilitation-during-observation-of-naturalistic-behaviour
#20
J E van Schaik, L M Sacheli, H Bekkering, I Toni, S M Aglioti
Mimicry of others' postures and behaviours forms an implicit yet indispensable component of social interactions. However, whereas numerous behavioural studies have investigated the occurrence of mimicry and its social sensitivity, the underlying neurocognitive mechanisms remain elusive. In this study, single pulse transcranial magnetic stimulation was used to measure corticospinal facilitation during a naturalistic behaviour observation task adapted from the behavioural mimicry literature. Motor evoked potentials (MEPs) in participants' right hands were measured as they observed stimulus videos of a confederate describing photographs...
June 14, 2017: European Journal of Neuroscience
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