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https://www.readbyqxmd.com/read/28805589/visual-dysfunction-in-parkinson-s-disease
#1
Richard A Armstrong
This chapter describes the visual problems likely to be encountered in Parkinson's disease (PD) and whether such signs are useful in differentiating the parkinsonian syndromes. Visual dysfunction in PD may involve visual acuity, contrast sensitivity, color discrimination, pupil reactivity, saccadic and pursuit eye movements, motion perception, visual fields, and visual processing speeds. In addition, disturbance of visuospatial orientation, facial recognition problems, rapid eye movement (REM) sleep behavior disorder, and chronic visual hallucinations may be present...
2017: International Review of Neurobiology
https://www.readbyqxmd.com/read/28803877/face-pareidolia-in-the-rhesus-monkey
#2
Jessica Taubert, Susan G Wardle, Molly Flessert, David A Leopold, Leslie G Ungerleider
Face perception in humans and nonhuman primates is rapid and accurate [1-4]. In the human brain, a network of visual-processing regions is specialized for faces [5-7]. Although face processing is a priority of the primate visual system, face detection is not infallible. Face pareidolia is the compelling illusion of perceiving facial features on inanimate objects, such as the illusory face on the surface of the moon. Although face pareidolia is commonly experienced by humans, its presence in other species is unknown...
August 4, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28803219/revealing-the-mechanisms-of-human-face-perception-using-dynamic-apertures
#3
Jennifer Murphy, Richard Cook
Faces are notoriously hard to perceive when turned upside-down. It is often claimed that perceptual decrements reflect a qualitative switch from parallel whole-face processing, to a serial analysis of individual features. To test this view, we examined observers' ability to categorize faces presented in their entirety, or viewed through a dynamic aperture that moved incrementally across the facial image. Exposing faces region-by-region disrupts holistic processing, but permits serial analysis of local features...
August 10, 2017: Cognition
https://www.readbyqxmd.com/read/28799834/altered-perception-of-facially-expressed-tiredness-in-insomnia
#4
Umair Akram, Rachel Sharman, Amy Newman
The present study compared normal sleepers and individuals displaying insomnia symptoms in their ratings for the expression intensity of tiredness and alertness whilst observing tired and neutral faces. Fifty-six normal sleepers and 58 individuals with insomnia symptoms observed 98 facial photographs (49 neutral, 49 tired). Using a visual analogue scale, participants were required to rate the extent to which each face appeared as tired and alert. Tired faces were created by manipulating neutral photographs to include previously identified facial tiredness cues...
January 1, 2017: Perception
https://www.readbyqxmd.com/read/28798378/perception-of-facial-expressions-reveals-selective-affect-biased-attention-in-humans-and-orangutans
#5
Carla Pritsch, Silke Telkemeyer, Cordelia Mühlenbeck, Katja Liebal
Rapid detection and recognition of another individual's emotional state plays a pivotal role for humans and, most likely, other social species. Proper reactions contribute to an individual's survival in potentially dangerous situations; this is ensured by a preferential attention towards salient cues. The predisposition to attend to certain categories of affectively salient stimuli- also referred to as affect-biased attention - is likely shared with other species, since fast detection of and appropriate reaction to threats is crucial to survival...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28795617/through-the-eyes-of-a-child-preschoolers-identification-of-emotional-expressions-from-the-child-affective-facial-expression-cafe-set
#6
Vanessa LoBue, Lewis Baker, Cat Thrasher
Researchers have been interested in the perception of human emotional expressions for decades. Importantly, most empirical work in this domain has relied on controlled stimulus sets of adults posing for various emotional expressions. Recently, the Child Affective Facial Expression (CAFE) set was introduced to the scientific community, featuring a large validated set of photographs of preschool aged children posing for seven different emotional expressions. Although the CAFE set was extensively validated using adult participants, the set was designed for use with children...
August 10, 2017: Cognition & Emotion
https://www.readbyqxmd.com/read/28790941/facial-contrast-is-a-cross-cultural-cue-for-perceiving-age
#7
Aurélie Porcheron, Emmanuelle Mauger, Frédérique Soppelsa, Yuli Liu, Liezhong Ge, Olivier Pascalis, Richard Russell, Frédérique Morizot
Age is a fundamental social dimension and a youthful appearance is of importance for many individuals, perhaps because it is a relevant predictor of aspects of health, facial attractiveness and general well-being. We recently showed that facial contrast-the color and luminance difference between facial features and the surrounding skin-is age-related and a cue to age perception of Caucasian women. Specifically, aspects of facial contrast decrease with age in Caucasian women, and Caucasian female faces with higher contrast look younger (Porcheron et al...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28790394/interocularly-merged-face-percepts-eliminate-binocular-rivalry
#8
P Christiaan Klink, Daphne Boucherie, Damiaan Denys, Pieter R Roelfsema, Matthew W Self
Faces are important visual objects for humans and other social animals. A complex network of specialized brain areas is involved in the recognition and interpretation of faces. This network needs to strike a balance between being sensitive enough to distinguish between different faces with similar features, and being tolerant of low-level visual changes so that a given face is stably perceived as a particular individual. Such stability may require feedback from higher brain regions down to the level where details are represented...
August 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28769837/trait-anxiety-impacts-the-perceived-gaze-direction-of-fearful-but-not-angry-faces
#9
Zhonghua Hu, Maria Gendron, Qiang Liu, Guang Zhao, Hong Li
Facial expression and gaze direction play an important role in social communication. Previous research has demonstrated the perception of anger is enhanced by direct gaze, whereas, it is unclear whether perception of fear is enhanced by averted gaze. In addition, previous research has shown the anxiety affects the processing of facial expression and gaze direction, but hasn't measured or controlled for depression. As a result, firm conclusions cannot be made regarding the impact of individual differences in anxiety and depression on perceptions of face expressions and gaze direction...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28763290/powered-air-purifying-respirator-use-in-healthcare-effects-on-thermal-sensations-and-comfort
#10
Jeffrey B Powell, Jung-Hyun Kim, Raymond J Roberge
Twelve subjects wore an N95 filtering facepiece respirator (N95 FFR), one tight-fitting full facepiece powered air-purifying respirator (PAPR), two loose-fitting PAPRs, and one elastomeric/PAPR hybrid for 1 hr each during treadmill walking at 5.6 km/h while undergoing physiological and subjective response monitoring. No significant interaction (p≥.05) was noted between the five respirators in heart rate, respiratory rate, oxygen saturation, transcutaneous carbon dioxide, and perceptions of breathing effort or discomfort, exertion, facial heat, and overall body heat...
August 1, 2017: Journal of Occupational and Environmental Hygiene
https://www.readbyqxmd.com/read/28761982/occlusal-chewing-and-tasting-characteristics-associated-with-orofacial-dysfunctions-in-children-with-unilateral-cleft-lip-and-palate-a-case-control-study
#11
Ana Bheatriz Marangoni Montes, Thais Marchini de Oliveira, Maria Beatriz Duarte Gavião, Taís de Souza Barbosa
OBJECTIVE: The objective of this study is to assess the associations between orofacial dysfunctions with malocclusion, masticatory performance, and taste in children with and without unilateral cleft lip and palate (UCLP). MATERIAL AND METHODS: A patient-based, matched, case-control study was conducted involving 108 8- to 10-year-old children divided in UCLP and control groups. Orofacial dysfunctions were evaluated using the Nordic Orofacial Test-Screening (NOT-S)...
July 31, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28761348/depression-in-blepharospasm-a-question-of-facial-feedback
#12
Janis Rebecca Bedarf, Sied Kebir, Joan Philipp Michelis, Bettina Wabbels, Sebastian Paus
Depression is the most important nonmotor symptom in blepharospasm (BL). As facial expression influences emotional perception, summarized as the facial feedback hypothesis, we investigated if patients report fewer depressive symptoms if injections of botulinum neurotoxin (BoNT) include the "grief muscles" of the glabellar region, compared to treatment of orbicularis oculi muscles alone. Ninety BL patients were included, half of whom had BoNT treatment including the frown lines. While treatment pattern did not predict depressive symptoms overall, subgroup analysis revealed that in male BL patients, BoNT injections into the frown lines were associated with remarkably less depressive symptoms...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28761076/-embodied-body-language-an-electrical-neuroimaging-study-with-emotional-faces-and-bodies
#13
Marta Calbi, Monica Angelini, Vittorio Gallese, Maria Alessandra Umiltà
To date, most investigations in the field of affective neuroscience mainly focused on the processing of facial expressions, overlooking the exploration of emotional body language (EBL), its capability to express our emotions notwithstanding. Few electrophysiological studies investigated the time course and the neural correlates of EBL and the integration of face and body emotion-related information. The aim of the present study was to investigate both the time course and the neural correlates underlying the integration of affective information conveyed by faces and bodies...
July 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28760287/surgery-first-orthognathic-approach-vs-traditional-orthognathic-approach-oral-health-related-quality-of-life-assessed-with-2-questionnaires
#14
Sandro Pelo, Giulio Gasparini, Umberto Garagiola, Massimo Cordaro, Francesco Di Nardo, Edoardo Staderini, Romeo Patini, Paolo de Angelis, Giuseppe D'Amato, Gianmarco Saponaro, Alessandro Moro
INTRODUCTION: The purposes of the study were to investigate and evaluate the differences detected by the patients between the traditional orthognathic approach and the surgery-first one in terms of level of satisfaction and quality of life. METHODS: A total of 30 patients who underwent orthognathic surgery for correction of malocclusions were selected and included in this study. Fifteen patients were treated with the conventional orthognathic surgery approach, and 15 patients with the surgery-first approach...
August 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28751183/three-dimensional-aesthetic-assessment-of-class-ii-patients-before-and-after-orthognathic-surgery-and-its-association-with-quantitative-surgical-changes
#15
A S Storms, L Vansant, E Shaheen, W Coucke, Cadenas de Llano-Pérula, R Jacobs, C Politis, G Willems
The aim of this study was to compare evaluations of the aesthetic outcome of class II orthognathic patients, as performed by observers with varying expertise using three-dimensional (3D) facial images, and to examine the relationship of aesthetic ratings in relation to quantitative surgical changes. Pre- and postoperative 3D facial images of 20 surgically treated class II patients (13 female, 7 male) were assessed for aesthetics by orthodontists, maxillofacial surgeons, and laypeople. Attractiveness ratings for the lips, chin, and overall facial aesthetics were evaluated on a 5-point Likert scale...
July 24, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28749958/the-impact-of-facial-abnormalities-and-their-spatial-position-on-perception-of-cuteness-and-attractiveness-of-infant-faces
#16
Jennifer Lewis, Debi Roberson, Tom Foulsham
Research has demonstrated that how "cute" an infant is perceived to be has consequences for caregiving. Infants with facial abnormalities receive lower ratings of cuteness, but relatively little is known about how different abnormalities and their location affect these aesthetic judgements. The objective of the current study was to compare the impact of different abnormalities on the perception of infant faces, while controlling for infant identity. In two experiments, adult participants gave ratings of cuteness and attractiveness in response to face images that had been edited to introduce common facial abnormalities...
2017: PloS One
https://www.readbyqxmd.com/read/28747686/memory-and-perception-based-facial-image-reconstruction
#17
Chi-Hsun Chang, Dan Nemrodov, Andy C H Lee, Adrian Nestor
Visual memory for faces has been extensively researched, especially regarding the main factors that influence face memorability. However, what we remember exactly about a face, namely, the pictorial content of visual memory, remains largely unclear. The current work aims to elucidate this issue by reconstructing face images from both perceptual and memory-based behavioural data. Specifically, our work builds upon and further validates the hypothesis that visual memory and perception share a common representational basis underlying facial identity recognition...
July 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28738311/perception-is-key-does-perceptual-sensitivity-and-parenting-behavior-predict-children-s-reactivity-to-others-emotions
#18
Joyce Weeland, Alithe Van den Akker, Meike Slagt, Samuel Putnam
When interacting with other people, both children's biological predispositions and past experiences play a role in how they will process and respond to social-emotional cues. Children may partly differ in their reactions to such cues because they differ in the threshold for perceiving such cues in general. Theoretically, perceptual sensitivity (i.e., the amount of detection of slight, low-intensity stimuli from the external environment independent of visual and auditory ability) might, therefore, provide us with specific information on individual differences in susceptibility to the environment...
November 2017: Journal of Experimental Child Psychology
https://www.readbyqxmd.com/read/28727930/visual-perception-of-british-women-s-skin-color-distribution-in-two-nonindustrialized-societies-the-maasai-and-the-tsimane
#19
Bernhard Fink, Marina Butovskaya, Piotr Sorokowski, Agnieszka Sorokowska, Paul J Matts
In women with lightly pigmented skin in particular, facial skin color homogeneity decreases with age, primarily due to chronic exposure to solar ultraviolet radiation (UVR), leading to a decrease in perceived health and attractiveness. Perception of female skin may be influenced by continuous exposure to, and thus familiarity with, age-related changes in visible skin condition in a given society. Men and women of two traditional societies, the Maasai (Tanzania) and the Tsimane' (Bolivia), unfamiliar with lighter colored skin, judged images of British women's facial skin for age, health, and attractiveness...
July 2017: Evolutionary Psychology: An International Journal of Evolutionary Approaches to Psychology and Behavior
https://www.readbyqxmd.com/read/28723957/brain-synchronization-during-perception-of-facial-emotional-expressions-with-natural-and-unnatural-dynamics
#20
Dionysios Perdikis, Jakob Volhard, Viktor Müller, Kathrin Kaulard, Timothy R Brick, Christian Wallraven, Ulman Lindenberger
Research on the perception of facial emotional expressions (FEEs) often uses static images that do not capture the dynamic character of social coordination in natural settings. Recent behavioral and neuroimaging studies suggest that dynamic FEEs (videos or morphs) enhance emotion perception. To identify mechanisms associated with the perception of FEEs with natural dynamics, the present EEG (Electroencephalography)study compared (i) ecologically valid stimuli of angry and happy FEEs with natural dynamics to (ii) FEEs with unnatural dynamics, and to (iii) static FEEs...
2017: PloS One
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