-
Animal Cognition May 2024Optical illusions have long been used in behavioural studies to investigate the perceptual mechanisms underlying vision in animals. So far, three studies have focused on...
Optical illusions have long been used in behavioural studies to investigate the perceptual mechanisms underlying vision in animals. So far, three studies have focused on ungulates, providing evidence that they may be susceptible to some optical illusions, in a way similar to humans. Here, we used two food-choice tasks to study susceptibility to the Müller-Lyer and Delboeuf illusions in 17 captive individuals belonging to four ungulate species (Lama guanicoe, Lama glama, Ovis aries, Capra hircus). At the group level, there was a significant preference for the longer/larger food over the shorter/smaller one in control trials. Additionally, the whole group significantly preferred the food stick between two inward arrowheads over an identical one between two outward arrowheads in experimental trials of the Müller-Lyer task, and also preferred the food on the smaller circle over an identical one on the larger circle in the experimental trials of the Delboeuf task. Group-level analyses further showed no significant differences across species, although at the individual level we found significant variation in performance. Our findings suggest that, in line with our predictions, ungulates are overall susceptible to the Müller-Lyer and the Delboeuf illusions, and indicate that the perceptual mechanisms underlying size estimation in artiodactyls might be similar to those of other species, including humans.
Topics: Animals; Camelids, New World; Optical Illusions; Female; Male; Goats; Size Perception; Sheep
PubMed: 38789595
DOI: 10.1007/s10071-024-01878-2 -
Archivos Argentinos de Pediatria May 2024Introduction. During adolescence, individuals start to make autonomous decisions about their health. Vaccination involves contextual, group, and vaccine-specific...
Introduction. During adolescence, individuals start to make autonomous decisions about their health. Vaccination involves contextual, group, and vaccine-specific dimensions. We sought to know the information, trust, and decision to receive the COVID-19 vaccine among adolescents who attended a healthcare center in Buenos Aires. Objectives. To identify settings and channels through which adolescents accessed information about the COVID-19 vaccine at a healthcare center in Buenos Aires. To describe their opinions about the different statements on vaccination. To describe their participation in COVID-19 vaccination. To identify barriers and facilitators to COVID-19 vaccination in this population. Population and methods. Qualitative study. Semi-structured interviews with adolescents who attended this healthcare facility. The sample was heterogeneous; the sample size was estimated by theoretical saturation. A thematic analysis of data was done. Results. A total of 14 interviews were conducted. Interviewees obtained information about the COVID-19 vaccine from their families, TV, and social media. All received information from both official campaigns and anti-vaccine communications. They analyzed the information they received and formed their own opinion. Their decision about the vaccine was not always respected. Hesitancy, a low perception of risk, fear of needles, administrative and geographic barriers were reasons for not receiving the vaccine. Conclusions. Communication strategies targeted at adolescents are required that encourage their involvement in access to vaccination.
PubMed: 38787914
DOI: 10.5546/aap.2023-10281.eng -
Investigative Ophthalmology & Visual... May 2024Visual snow is the hallmark of the neurological condition visual snow syndrome (VSS) but the characteristics of the visual snow percept remain poorly defined. This study...
PURPOSE
Visual snow is the hallmark of the neurological condition visual snow syndrome (VSS) but the characteristics of the visual snow percept remain poorly defined. This study aimed to quantify its appearance, interobserver variability, and effect on measured visual performance and self-reported visual quality.
METHODS
Twenty-three participants with VSS estimated their visual snow dot size, separation, luminance, and flicker rate by matching to a simulation. To assess whether visual snow masks vision, we compared pattern discrimination thresholds for textures that were similar in spatial scale to visual snow as well as more coarse than visual snow, in participants with VSS, and with and without external noise simulating visual snow in 23 controls.
RESULTS
Mean and 95% confidence intervals for visual snow appearance were: size (6.0, 5.8-6.3 arcseconds), separation (2.0, 1.7-2.3 arcmin), luminance (72.4, 58.1-86.8 cd/m2), and flicker rate (25.8, 18.9-32.8 frames per image at 120 hertz [Hz]). Participants with finer dot spacing estimates also reported greater visibility of their visual snow (τb = -0.41, 95% confidence interval [CI] = -0.62 to -0.13, P = 0.01). In controls, adding simulated fine-scale visual snow to textures increased thresholds for fine but not coarse textures (F(1, 22) = 4.98, P = 0.036, ηp2 = 0.19). In VSS, thresholds for fine and coarse textures were similar (t(22) = 0.54, P = 0.60), suggesting that inherent visual snow does not act like external noise in controls.
CONCLUSIONS
Our quantitative estimates of visual snow constrain its likely neural origins, may aid differential diagnosis, and inform future investigations of how it affects vision. Methods to quantify visual snow are needed for evaluation of potential treatments.
Topics: Humans; Male; Female; Adult; Middle Aged; Visual Acuity; Young Adult; Sensory Thresholds; Vision Disorders; Aged; Visual Perception; Observer Variation; Pattern Recognition, Visual; Perceptual Disorders
PubMed: 38787547
DOI: 10.1167/iovs.65.5.38 -
Behavioral Sciences (Basel, Switzerland) May 2024Trust plays a crucial role in effectively responding to public health emergencies. Drawing on COVID-19 survey data conducted in Hubei, China, during August 2020 with a...
Trust in Acquaintances, Strangers and Institutions among Individuals of Different Socioeconomic Statuses during Public Health Emergencies: The Moderation of Family Structure and Policy Perception.
Trust plays a crucial role in effectively responding to public health emergencies. Drawing on COVID-19 survey data conducted in Hubei, China, during August 2020 with a sample size of 5494, this study investigated the influence of individuals' socioeconomic status on trust in acquaintances, strangers and institutions, and how this relationship is moderated by epidemic prevention, policy perception and family structure. The findings showed that individuals with higher socioeconomic status tend to have higher levels of trust. Those with higher income but being married demonstrate higher trust. When perceiving epidemic prevention policies as stringent, those with higher income display increased trust in acquaintances and institutions; similarly, those with lower education levels exhibit heightened trust in acquaintances and strangers. Individuals working in social organizations express higher trust in strangers; however, their trust is compromised under stringent epidemic prevention policies due to potentially heavier work burdens.
PubMed: 38785894
DOI: 10.3390/bs14050404 -
Continuity in Education 2024In Ireland, hospital schools comprise a very small component of the overall primary and post-primary education system. Indeed, there are only seven hospital schools...
In Ireland, hospital schools comprise a very small component of the overall primary and post-primary education system. Indeed, there are only seven hospital schools employing a total of 21 teachers nationally. Given the size and uniqueness of this education setting, opportunities for teacher continuous professional development are limited. This qualitative research study examined Irish hospital teachers' perceptions of their continuing professional development needs using a case study approach. The research captured the perspectives of 19 teachers currently teaching in seven hospital schools in Ireland. Data consisted of responses to an anonymous online questionnaire and two focus groups designed to examine and interpret the questionnaire data. Thematic analysis was conducted on all data collected. The findings revealed that Irish hospital teachers have a clear shared perception of the professional development needs both for newly hired and currently practising hospital teachers. Hospital schools are a very small, but a very important component of education in Ireland, and the professional needs identified are specific to this unique context. Teachers working in this context must be supported so that they can provide the education that the pupils, who must access this service, deserve.
PubMed: 38774598
DOI: 10.5334/cie.123 -
Journal of Eating Disorders May 2024Body image dissatisfaction is a significant concern among men, influencing appearance evaluation, eating behaviors, and muscle dysmorphia psychopathology. However,...
BACKGROUND
Body image dissatisfaction is a significant concern among men, influencing appearance evaluation, eating behaviors, and muscle dysmorphia psychopathology. However, research on these correlations is notably deficient in men, largely because body image concerns are unevenly distributed between genders. Therefore, this study aims to assess the various dimensions of concerns about body image in men and explore their associations with characteristics such as sexual orientation.
METHODS
A cross-sectional study was conducted with 251 adult men from fitness centers in the Veneto Region, Italy. Participants completed self-report questionnaires, including the Eating Attitudes Test (EAT-26), the Appearance Schemas Inventory-Revised (ASI-R), and the Muscle Dysmorphic Disorder Inventory (MDDI). Body weight perception and dissatisfaction were evaluated using a Figure Rating Scale (FRS) with 12 male biometric silhouettes.
RESULTS
Participants were divided into three subgroups based on the experienced levels of body weight dissatisfaction: those who rated a smaller body (BWsmaller), those who rated a larger body (BWlarger) more highly relative to their own estimated body size, and those who reported implicit neutrality with their current weight (BWneu). BWsmaller participants reported higher levels of eating-related concern, while BWlarger participants exhibited higher levels of muscle dysmorphia. Additionally, the BWlarger group showed the highest degree of quantitative perceptual underestimation of their body weight. Sexual orientation was found to have an impact on body weight dissatisfaction, with bisexual men more likely to desire an increase in weight and gay men more likely to desire a decrease.
CONCLUSIONS
Body weight dissatisfaction significantly impacts appearance evaluation, eating behaviors, and muscle dysmorphia psychopathology in males. Tailored interventions that consider individual differences can support the well-being of men. The study provides useful insight into male body image issues, warranting further exploration to inform effective interventions and promote positive body image and mental health in this population.
PubMed: 38773673
DOI: 10.1186/s40337-024-01025-9 -
MicroPublication Biology 2024Perception of external cues is important for enhancing the fitness and survival of animals. However, the role of odor perception in regulation of longevity and health is...
Perception of external cues is important for enhancing the fitness and survival of animals. However, the role of odor perception in regulation of longevity and health is incompletely defined. Here, we show that the exposure to an aversive odor 2-nonanone reduces life span, brood size, feeding rate, and increases lipid storage in worms. These effects are restored to normal levels in mutant worms lacking functional olfactory AWB neurons, suggesting a potential role of odor perception in the regulation of animal physiology and longevity.
PubMed: 38764945
DOI: 10.17912/micropub.biology.001198 -
Brain & Spine 2024Telemetric monitoring of intracranial pressure (ICP) in children with a complex cerebrospinal disorder might help parents distinguish acute and potential...
INTRODUCTION
Telemetric monitoring of intracranial pressure (ICP) in children with a complex cerebrospinal disorder might help parents distinguish acute and potential life-threatening symptoms of hydrocephalus from other illnesses.
RESEARCH QUESTION
What is patient and parent perceptions of system utility of telemetric ICP monitoring, and how does a long-term telemetric implant influence daily life of both patients and their families?
MATERIAL AND METHODS
A qualitative case study design with a focus group interview including parents of children with a complex cerebrospinal fluid disorder and an implanted telemetric ICP sensor.
RESULTS
Three parents participated. Based on thematic analysis, three themes were created: 'Daily living with telemetric ICP monitoring', 'Parenting a child with a CSF disorder', and 'The healthy sibling'. The ICP sensor provided the parents with security and made them trust their intuition, while the possibility of home monitoring ensured stability for the entire family and had a calming effect on healthy siblings. Home monitoring was seen as the system's greatest advantages, whereas size, weight, and functionality of the external monitoring equipment were highlighted as disadvantages.
DISCUSSION AND CONCLUSION
All parents supported the telemetric ICP sensor as a valued tool in treatment guidance of their child and stated that advantages exceeded disadvantages. It was stated that the possibility of conducting ICP measurements at home reduced the need for acute hospital admissions, which consequently led to a more stable daily life for the entire family. Suggestions regarding technical improvements with focus on more compatible external monitoring equipment were raised by all parents included.
PubMed: 38764889
DOI: 10.1016/j.bas.2024.102820 -
Scientific Reports May 2024Passive translational acceleration (PTA) has been demonstrated to induce the stress response and regulation of autonomic balance in healthy individuals. Electrodermal...
Exploring physiological stress response evoked by passive translational acceleration in healthy adults: a pilot study utilizing electrodermal activity and heart rate variability measurements.
Passive translational acceleration (PTA) has been demonstrated to induce the stress response and regulation of autonomic balance in healthy individuals. Electrodermal activity (EDA) and heart rate variability (HRV) measurements are reliable indicators of the autonomic nervous system (ANS) and can be used to assess stress levels. The objective of this study was to investigate the potential of combining EDA and HRV measurements in assessing the physiological stress response induced by PTA. Fourteen healthy subjects were randomly assigned to two groups of equal size. The experimental group underwent five trials of elevator rides, while the control group received a sham treatment. EDA and HRV indices were obtained via ultra-short-term analysis and compared between the two groups to track changes in the ANS. In addition, the complexity of the EDA time series was compared between the 4 s before and the 2-6 s after the onset of PTA to assess changes in the subjects' stress levels in the experimental group. The results revealed a significant increase in the skin conductance response (SCR) frequency and a decrease in the root mean square of successive differences (RMSSD) and high frequency (HF) components of HRV. In terms of stress assessment, the results showed an increase in the complexity of the EDA time series 2-6 s after the onset of PTA. These results indicate an elevation in sympathetic tone when healthy subjects were exposed to a translational transport scenario. Furthermore, evidence was provided for the ability of EDA complexity to differentiate stress states in individual trials of translational acceleration.
Topics: Adult; Female; Humans; Male; Young Adult; Acceleration; Autonomic Nervous System; Galvanic Skin Response; Healthy Volunteers; Heart Rate; Pilot Projects; Stress, Physiological
PubMed: 38762532
DOI: 10.1038/s41598-024-61656-5 -
Cognition Aug 2024Eyes are active in memory recall and visual imagination, yet our grasp of the underlying qualities and factors of these internally coupled eye movements is limited. To...
Eyes are active in memory recall and visual imagination, yet our grasp of the underlying qualities and factors of these internally coupled eye movements is limited. To explore this, we studied 50 participants, examining how workload, spatial reference availability, and imagined movement direction influence internal coupling of eye movements. We designed a visuospatial working memory task in which participants mentally moved a black patch along a path within a matrix and each trial involved one step along this path (presented via speakers: up, down, left, or right). We varied workload by adjusting matrix size (3 × 3 vs. 5 × 5), manipulated availability of a spatial frame of reference by presenting either a blank screen (requiring participants to rely solely on their mental representation of the matrix) or spatial reference in the form of an empty matrix, and contrasted active task performance to two control conditions involving only active or passive listening. Our findings show that eye movements consistently matched the imagined movement of the patch in the matrix, not driven solely by auditory or semantic cues. While workload influenced pupil diameter, perceived demand, and performance, it had no observable impact on internal coupling. The availability of spatial reference enhanced coupling of eye movements, leading more frequent, precise, and resilient saccades against noise and bias. The absence of workload effects on coupled saccades in our study, in combination with the relatively high degree of coupling observed even in the invisible matrix condition, indicates that eye movements align with shifts in attention across both visually and internally represented information. This suggests that coupled eye movements are not merely strategic efforts to reduce workload, but rather a natural response to where attention is directed.
Topics: Humans; Memory, Short-Term; Adult; Male; Female; Young Adult; Space Perception; Eye Movements; Imagination; Visual Perception; Psychomotor Performance
PubMed: 38761645
DOI: 10.1016/j.cognition.2024.105815