Perceived spatial presence and body orientation affect the recall of out-of-sight places in an immersive sketching experiment.

The orientation of sketch maps of remote but familiar city squares produced from memory has been shown to depend on the distance and airline direction from the production site to the remembered square (position-dependent recall, Röhrich et al. in PLoS One 9(11): e112793, 2014). Here, we present a virtual reality version of the original experiment and additionally study the role of body orientation. Three main points can be made: First, "immersive sketching" is a novel and useful paradigm in which subjects sketch maps live on paper while being immersed in virtual reality. Second, the original effect of position-dependent recall was confirmed, indicating that the sense of being present at a particular location, even if generated in a virtual environment, suffices to bias the imagery of distant places. Finally, the orientation of the produced sketch maps depended also on the body orientation of the subjects. At each production site, body orientation was controlled by varying the position of the live feed in the virtual environment, such that subjects had to turn towards the prescribed direction. Position-dependent recall is strongest if subjects are aligned with the airline direction to the target and virtually goes away if they turn in the opposite direction. We conclude that the representation of out-of-sight target places depends on both the current airline direction to the target and the body orientation.

Psychosocial Care for Pediatric Cancer. Module 03: Mental Health Care

Advances in the treatment of pediatric cancer have made it possible to expand initiatives beyond cure and cover aspects such as early detection, continuity of treatment and reduction in toxicity. All this has paved the way for a more comprehensive vision of patient care, which means better chances of healing and a fuller life - objectives of the World Initiative against Childhood Cancer. Within this comprehensive care, psychosocial care includes the social, psychological, spiritual and functional dimensions of the disease process of patients. This series includes guidelines and standards based on evidence that guarantee the quality of said care. The standards are the result of discussion and review by different professionals from Latin America and the Caribbean. Module 3 focuses on mental health care, referring to the interventions of mental health specialists with the aim of preventing and addressing psychological or psychiatric symptoms in childhood cancer patients and their families, as well as the possible sequelae of disease and treatment.

Population dynamics of head-direction neurons during drift and reorientation.

The head direction (HD) system functions as the brain's internal compass1,2, classically formalized as a one-dimensional ring attractor network3,4. In contrast to a globally consistent magnetic compass, the HD system does not have a universal reference frame. Instead, it anchors to local cues, maintaining a stable offset when cues rotate5-8 and drifting in the absence of referents5,8-10. However, questions about the mechanisms that underlie anchoring and drift remain unresolved and are best addressed at the population level. For example, the extent to which the one-dimensional description of population activity holds under conditions of reorientation and drift is unclear. Here we performed population recordings of thalamic HD cells using calcium imaging during controlled rotations of a visual landmark. Across experiments, population activity varied along a second dimension, which we refer to as network gain, especially under circumstances of cue conflict and ambiguity. Activity along this dimension predicted realignment and drift dynamics, including the speed of network realignment. In the dark, network gain maintained a 'memory trace' of the previously displayed landmark. Further experiments demonstrated that the HD network returned to its baseline orientation after brief, but not longer, exposures to a rotated cue. This experience dependence suggests that memory of previous associations between HD neurons and allocentric cues is maintained and influences the internal HD representation. Building on these results, we show that continuous rotation of a visual landmark induced rotation of the HD representation that persisted in darkness, demonstrating experience-dependent recalibration of the HD system. Finally, we propose a computational model to formalize how the neural compass flexibly adapts to changing environmental cues to maintain a reliable representation of HD. These results challenge classical one-dimensional interpretations of the HD system and provide insights into the interactions between this system and the cues to which it anchors.

Cerebellar control of a unitary head direction sense.

The head-direction (HD) system, a key neural circuit for navigation, consists of several anatomical structures containing neurons selective to the animal's head direction. HD cells exhibit ubiquitous temporal coordination across brain regions, independently of the animal's behavioral state or sensory inputs. Such temporal coordination mediates a single, stable, and persistent HD signal, which is essential for intact orientation. However, the mechanistic processes behind the temporal organization of HD cells are unknown. By manipulating the cerebellum, we identify pairs of HD cells recorded from two brain structures (anterodorsal thalamus and retrosplenial cortex) that lose their temporal coordination, specifically during the removal of the external sensory inputs. Further, we identify distinct cerebellar mechanisms that participate in the spatial stability of the HD signal depending on sensory signals. We show that while cerebellar protein phosphatase 2B-dependent mechanisms facilitate the anchoring of the HD signal on the external cues, the cerebellar protein kinase C-dependent mechanisms are required for the stability of the HD signal by self-motion cues. These results indicate that the cerebellum contributes to the preservation of a single and stable sense of direction.

Intervenções psicológicas necessárias: a prática como residente no serviço de medicina fetal / Necessary psychological interventions: the practice as a resident in the fetal medicine service / Intervenciones psicológicas necesarias: la práctica como residente en el servicio de medicina fetal

Com os avanços tecnológicos e o aprimoramento da prática médica via ultrassonografia, já é possível detectar possíveis problemas no feto desde a gestação. O objetivo deste estudo foi analisar a prática do psicólogo no contexto de gestações que envolvem riscos fetais. Trata-se de um estudo qualitativo sob formato de relato de experiência como psicólogo residente no Serviço de Medicina Fetal da Maternidade Escola da Universidade Federal do Rio de Janeiro (UFRJ). Os registros, feitos por observação participante e diário de campo, foram analisados em dois eixos temáticos: 1) intervenções psicológicas no trabalho em equipe em consulta de pré-natal, exame de ultrassonografia e procedimento de amniocentese; e 2) intervenções psicológicas em casos de bebês incompatíveis com a vida. Os resultados indicaram que o psicólogo nesse serviço é essencial para atuar de forma multiprofissional na assistência pré-natal para gravidezes de alto risco fetal. Ademais, a preceptoria do residente é relevante para sua formação e treinamento para atuação profissional no campo da psicologia perinatal.(AU)

Face to the technological advances and the improvement of medical practice via ultrasound, it is already possible to detect possible problems in the fetus since pregnancy. The objective of this study was to analyze the psychologist's practice in the context of pregnancies which involve fetal risks. It is a qualitative study based on an experience report as a psychologist trainee at the Fetal Medicine Service of the Maternity School of UFRJ. The records, based on the participant observation and field diary, were analyzed in two thematic axes: 1) psychological interventions in the teamwork in the prenatal attendance, ultrasound examination and amniocentesis procedure; and 2) psychological interventions in cases of babies incompatible to the life. The results indicated that the psychologist in this service is essential to work in a multidisciplinary way at the prenatal care for high fetal risk pregnancies. Furthermore, the resident's preceptorship is relevant to their education and training for professional performance in the field of Perinatal Psychology.(AU)

Con los avances tecnológicos y la mejora de la práctica médica a través de la ecografía, ya se puede detectar posibles problemas en el feto desde el embarazo. El objetivo de este estudio fue analizar la práctica del psicólogo en el contexto de embarazos de riesgos fetal. Es un estudio cualitativo basado en un relato de experiencia como residente de psicología en el Servicio de Medicina Fetal de la Escuela de Maternidad de la Universidade Federal do Rio de Janeiro (UFRJ). Los registros, realizados en la observación participante y el diario de campo, se analizaron en dos ejes temáticos: 1) intervenciones psicológicas en el trabajo en equipo, en la consulta prenatal, ecografía y los procedimientos de amniocentesis; y 2) intervenciones psicológicas en casos de bebés incompatibles con la vida. Los resultados señalaron como fundamental la presencia del psicólogo en este servicio trabajando de forma multidisciplinar en la atención prenatal en el contexto de embarazos de alto riesgo fetal. Además, la tutela del residente es relevante para su educación y formación para el desempeño profesional en el campo de la Psicología Perinatal.(AU)

Orientação a pais por chamadas de áudio durante a pandemia de covid-19 / Support for parents via audio calls during the covid-19 pandemic / Orientación de los padres mediante llamadas de audio durante la pandemia de covid-19

O distanciamento social ocasionado pela pandemia de Covid-19 levou a profundas mudanças na rotina das famílias com crianças pequenas, aumentando o estresse no ambiente doméstico. Este estudo analisou a experiência de planejamento e implementação de um projeto de extensão universitária que ofereceu orientação a pais com filhos de 0 a 11 anos por meio de chamadas de áudio durante a pandemia. O protocolo de atendimento foi desenvolvido para atender às necessidades de famílias de baixa renda e listava problemas específicos relacionados ao confinamento em casa e ao fechamento das escolas seguidos por uma variedade de estratégias de enfrentamento. A análise de 223 queixas relatadas pelos usuários em 130 ligações revelou que 94% dos problemas referidos pelos pais foram contemplados pelo protocolo de atendimento e estavam relacionados aos problemas externalizantes (39%) ou internalizantes (26%) das crianças ou ao declínio do bem-estar subjetivo dos pais (29%). Serviços de apoio devem orientar os pais quanto ao uso de práticas responsivas e assertivas que promovam o bem-estar emocional da criança e estabeleçam expectativas comportamentais em contextos estressantes. A diminuição dos conflitos entre pais e filhos resultante do uso dessas estratégias tende a reduzir o sofrimento dos pais, aumentando sua sensação de bem-estar subjetivo. Recomenda-se ampla divulgação dessas iniciativas e seguimento dos casos.(AU)

The social distancing the COVID-19 pandemic entailed has led to profound changes in the routine of families with young children, increasing stress in the home environment. This study analyzed the experience of planning and implementing a university extension program that offered support to parents with children from 0 to 11 years old via audio calls during the COVID-19 pandemic. The service protocol was developed to meet the needs of low-income families and listed specific problems related to home confinement and school closure followed by a variety of coping strategies. The analysis of 223 complaints reported by users in 130 calls revealed that 94% of the problems reported by parents were addressed by the protocol and were related to children's externalizing (39%) or internalizing (26%) problems or to the decline in parents' subjective well-being (29%). Support services should guide parents on the use of responsive and assertive practices that promote the child's emotional well-being and set behavioral expectations in stressful contexts. The reduction in conflicts between parents and children resulting from the use of these strategies tends to reduce parents' suffering, increasing their sense of subjective well-being. Wide dissemination of these initiatives and case follow-up are recommended.(AU)

La distancia social causada por la pandemia de COVID-19 condujo a cambios profundos en la rutina de las familias con niños pequeños, aumentando el estrés en el entorno del hogar. Este estudio analizó la experiencia de planificar e implementar un proyecto de extensión universitaria que ofreció orientación a los padres con niños de cero a 11 años a través de llamadas de audio durante la pandemia COVID-19. El protocolo de atención se desarrolló para satisfacer las necesidades de las familias de bajos ingresos y enumeró problemas específicos relacionados con el confinamiento en el hogar y el cierre de la escuela, seguido de una variedad de estrategias de afrontamiento. El análisis de 223 quejas informadas por los usuarios en 130 llamadas reveló que el 94% de los problemas informados por los padres fueron abordados por el protocolo de atención y estaban relacionados con los problemas de externalización (39%) o internalización (26%) de los niños o la disminución del bienestar subjetivo de los padres (29%). Los servicios de apoyo deberían aconsejar a los padres sobre el uso de prácticas receptivas y asertivas que promuevan el bienestar emocional del niño y establezcan expectativas de comportamiento en contextos estresantes. La reducción de los conflictos entre padres e hijos como resultado del uso de estas estrategias tiende a reducir el sufrimiento de los padres, aumentando su sensación de bienestar subjetivo. Se recomienda una amplia difusión de estas iniciativas y seguimiento de casos.(AU)

Componente curricular projeto de vida: perspectivas de professoras da rede estadual de São Paulo / Curricular component life purpose: perspectives of teachers of the São Paulo state network / Componente curricular proyecto de vida: perspectivas de profesores de la red estadual de São Paulo

O objetivo deste estudo foi conhecer a experiência de alguns professores ao lecionar projeto de vida durante a implementação do componente curricular Projeto de Vida no estado de São Paulo. Realizou-se uma pesquisa qualitativa, de caráter exploratório. Participaram do estudo sete professoras que lecionavam o componente curricular Projeto de Vida em duas escolas públicas, de uma cidade do interior do estado de São Paulo, escolhidas por conveniência. Foram utilizados o Questionário de Dados Sociodemográficos e o Protocolo de Entrevista Semiestruturada para Projeto de Vida de Professores, elaborados para este estudo. As professoras foram entrevistadas individualmente, on-line, e as entrevistas foram gravadas em áudio e vídeo. Os dados foram analisados por meio de análise temática. Os resultados indicaram possibilidades e desafios em relação à implementação do componente curricular Projeto de Vida. Constatou- se que a maioria das docentes afirmou que escolheu esse componente curricular devido à necessidade de atingir a carga horária exigida na rede estadual. As professoras criticaram a proposta, os conteúdos e os materiais desse componente curricular. As críticas apresentadas pelas professoras estão em consonância com aquelas presentes na literatura em relação à reforma do Ensino Médio e ao Inova Educação. Esses resultados sugerem a necessidade de formação tanto nos cursos de licenciatura quanto em ações de formação continuada, para que os professores se sintam mais seguros e preparados para lecionar o componente curricular Projeto de Vida na Educação Básica. Propõe-se uma perspectiva de formação pautada na reflexão e na troca entre os pares para a construção de um projeto coletivo da escola para o componente Projeto de Vida.(AU)

This study aimed to know the experience of some teachers when teaching life purpose during the implementation of the curricular component "Life Purpose" (Projeto de Vida) in the state of São Paulo. A qualitative, exploratory research was carried out. Seven teachers who taught the curricular component "Life Purpose" (Projeto de Vida) in two public schools in a city in the inland state of São Paulo, chosen for convenience, participated in the study. The Sociodemographic Data Questionnaire and the Semi-structured Interview Protocol for Teachers' Life Purposes, developed for this study, were used. The teachers were interviewed individually, online, and the interviews were recorded in audio and video. Data were analyzed using thematic analysis. The results indicated possibilities and challenges regarding the implementation of the Life Purpose curricular component. It was found that most teachers chose this curricular component due to the need to reach the required workload in the state network. The teachers criticized the proposal, the contents and the materials of this curricular component. Teacher's critics are in line with the criticisms present in the literature regarding the reform of High School and Inova Educação. Therefore, training is essential, both in undergraduate courses and in continuing education actions, so that teachers can teach the curricular component Life Purpose in Basic Education. A training perspective based on reflection and exchange between peers is proposed for the construction of a collective school project for the Life Purpose component.(AU)

El objetivo de este estudio fue conocer la experiencia de algunos profesores al enseñar proyecto de vida durante la implementación del componente curricular Proyecto de Vida en el estado de São Paulo. Se realizó una investigación cualitativa, exploratoria. Participaron en el estudio siete profesores que impartían el componente curricular Proyecto de Vida en dos escuelas públicas en un municipio del estado de São Paulo, elegidos por conveniencia. Los instrumentos utilizados fueron el cuestionario de datos sociodemográficos y el protocolo de entrevista semiestructurada para proyectos de vida de profesores, desarrollados para este estudio. Las entrevistas a los profesores fueron en línea, de manera individual, y fueron grabadas en audio y video. Los datos se sometieron a un análisis temático. Los resultados indicaron posibilidades y desafíos en relación a la implementación del componente curricular Proyecto de Vida. La mayoría de los profesores declararon elegir este componente curricular por la necesidad de alcanzar la carga horaria requerida en la red estatal. Los profesionales criticaron la propuesta, los contenidos y los materiales de este componente curricular. Las críticas presentadas están en línea con las críticas presentes en la literatura respecto a la reforma de la educación básica e Inova Educação. Por lo tanto, la formación es fundamental, tanto en los cursos de grado como en las acciones de educación permanente, para que los profesores puedan impartir el componente curricular Proyecto de Vida en la educación básica. Se propone una formación basada en la reflexión y el intercambio entre pares para la construcción de un proyecto escolar colectivo en el componente Proyecto de Vida.(AU)

Is implicit Level-2 visual perspective-taking embodied? Spontaneous perceptual simulation of others' perspectives is not impaired by motor restriction.

Visual perspective taking may rely on the ability to mentally rotate one's own body into that of another. Here, we test whether participants' ability to make active body movements plays a causal role in visual perspective taking. We utilised our recent task that measures whether participants spontaneously represent another's visual perspective in a (quasi-)perceptual format that can drive own perceptual decision making. Participants reported whether alphanumeric characters, presented in different orientations, are shown in their normal or mirror-inverted form (e.g., "R" vs. "Я"). Between trials, we manipulated whether another person was sitting either left or right of the character and whether participants' movement was restricted with a chinrest or whether they could move freely. As in our previous research, participants spontaneously took the visual perspective of the other person, recognising rotated letters more rapidly when they appeared upright to the other person in the scene, compared with when they faced away from that person, and these effects increased with age but were (weakly) negatively related to schizotypy and not to autistic traits or social skills. Restricting participants' ability to make active body movements did not influence these effects. The results, therefore, rule out that active physical movement plays a causal role in computing another's visual perspective, either to create alignment between own and other's perspective or to trigger perspective taking processes. The postural adjustments people sometimes make when making judgements from another's perspective may instead be a bodily consequence of mentally transforming one's actual to an imagined position in space.

Laminar distribution and arbor density of two functional classes of thalamic inputs to primary visual cortex.

Motion/direction-sensitive and location-sensitive neurons are the two major functional types in mouse visual thalamus that project to the primary visual cortex (V1). It is under debate whether motion/direction-sensitive inputs preferentially target the superficial layers in V1, as opposed to the location-sensitive inputs, which preferentially target the middle layers. Here, by using calcium imaging to measure the activity of motion/direction-sensitive and location-sensitive axons in V1, we find evidence against these cell-type-specific laminar biases at the population level. Furthermore, using an approach to reconstruct axon arbors with identified in vivo response types, we show that, at the single-axon level, the motion/direction-sensitive axons project more densely to the middle layers than the location-sensitive axons. Overall, our results demonstrate that motion/direction-sensitive thalamic neurons project extensively to the middle layers of V1 at both the population and single-cell levels, providing further insight into the organization of thalamocortical projection in the mouse visual system.

A model of head direction and landmark coding in complex environments.

Environmental information is required to stabilize estimates of head direction (HD) based on angular path integration. However, it is unclear how this happens in real-world (visually complex) environments. We present a computational model of how visual feedback can stabilize HD information in environments that contain multiple cues of varying stability and directional specificity. We show how combinations of feature-specific visual inputs can generate a stable unimodal landmark bearing signal, even in the presence of multiple cues and ambiguous directional specificity. This signal is associated with the retrosplenial HD signal (inherited from thalamic HD cells) and conveys feedback to the subcortical HD circuitry. The model predicts neurons with a unimodal encoding of the egocentric orientation of the array of landmarks, rather than any one particular landmark. The relationship between these abstract landmark bearing neurons and head direction cells is reminiscent of the relationship between place cells and grid cells. Their unimodal encoding is formed from visual inputs via a modified version of Oja's Subspace Algorithm. The rule allows the landmark bearing signal to disconnect from directionally unstable or ephemeral cues, incorporate newly added stable cues, support orientation across many different environments (high memory capacity), and is consistent with recent empirical findings on bidirectional HD firing reported in the retrosplenial cortex. Our account of visual feedback for HD stabilization provides a novel perspective on neural mechanisms of spatial navigation within richer sensory environments, and makes experimentally testable predictions.

Holistic face recognition is an emergent phenomenon of spatial processing in face-selective regions.

Spatial processing by receptive fields is a core property of the visual system. However, it is unknown how spatial processing in high-level regions contributes to recognition behavior. As face inversion is thought to disrupt typical holistic processing of information in faces, we mapped population receptive fields (pRFs) with upright and inverted faces in the human visual system. Here we show that in face-selective regions, but not primary visual cortex, pRFs and overall visual field coverage are smaller and shifted downward in response to face inversion. From these measurements, we successfully predict the relative behavioral detriment of face inversion at different positions in the visual field. This correspondence between neural measurements and behavior demonstrates how spatial processing in face-selective regions may enable holistic perception. These results not only show that spatial processing in high-level visual regions is dynamically used towards recognition, but also suggest a powerful approach for bridging neural computations by receptive fields to behavior.

[Effect of single hyperbaric oxygen treatment on attention networks in young migrants in Tibet].

Many studies have shown that high-altitude exposure could significantly influence human cognition, and the approaches which could enhance the human cognition in high-altitude hypoxia environment attract great attention. In the present study, we recruited a total of 60 subjects who had been migrated to Tibet University as adults for more than one year. These participants were randomly divided into the experimental group and the control group. The participants in the experimental group were instructed to complete a hyperbaric oxygen treatment, and those in the control group just completed a wait condition. By using the attention network test (ANT), the changes of the attention function before and after a single session of hyperbaric oxygen treatment were explored. The results showed that single hyperbaric oxygen treatment significantly improved the orienting function of attention, with an obvious post-intervention effect, but not the alerting and conflict function of attention. We also found a strong association between alerting function and conflict function after the end of intervention, suggesting the change of the overall performance of attention function. The present findings might suggest that the improvement of attention function by a single session of hyperbaric oxygen intervention is derived from the increase of general cognitive resources, rather than the transfer of cognitive resources within the attention system.

Atenção integrada para as pessoas idosas (ICOPE). Diretrizes de intervenções comunitárias para o manejo dos declínios na capacidade intrínseca / WHO Guidelines on Integrated Care for Older People (ICOPE). Guidelines on community-level interventions to manage declines in intrinsic capacity

O Programa de Atenção Integrada para a Pessoa Idosa (ICOPE) foi desenvolvido pela Organização Mundial da Saúde (OMS) para atender às necessidades e demandas de saúde das populações idosas em todo o mundo. Em 2050, a proporção da população global com 60 anos ou mais quase dobrará. Nas Américas, a expectativa de vida aumentou 21,6 anos nas últimas seis décadas. No entanto, viver mais frequentemente significa enfrentar problemas de saúde acumulados durante a velhice. A transição demográfica afetará quase todos os aspectos da sociedade e criará novos e complexos desafios para os sistemas de saúde e assistência social. Portanto, é necessária uma abordagem transformadora na maneira como os sistemas de saúde e os serviços dentro deles são estruturados - para garantir cuidados de alta qualidade que sejam integrados, acessíveis e com foco nas necessidades e direitos das pessoas idosas. A atenção integrada, especialmente para as pessoas idosas e com condições crônicas de saúde, é amplamente aceita como um mecanismo para melhorar os resultados de saúde e a eficiência do sistema. O Manual ICOPE fornece orientações detalhadas para ajudar os profissionais de saúde e cuidadores da comunidade a colocar em prática a atenção integrada para a pessoa idosa, através do desenvolvimento de um plano de cuidados. Dessa forma, o manual auxilia na definição de metas centradas na pessoa e na integração de abordagens nos diferentes níveis de atenção. O plano de cuidados pode incluir várias intervenções para gerenciar declínios na capacidade intrínseca, fornecer assistência e apoio social, desenvolver capacidade para o automanejo e apoiar os cuidadores. A brochura ICOPE apresenta os destaques da abordagem ICOPE para facilitar a sua divulgação e favorecer uma ampla apresentação do método.

Guía técnica para la colecta de plantas medicinales / Technical guide for the collection of medicinal plants

El documento contiene la orientación técnica al personal de salud para la estandarización de los procedimientos y métodos para la colecta y recopilación de plantas medicinales e información de su uso tradicional a nivel nacional.

Effect of single hyperbaric oxygen treatment on attention networks in young migrants in Tibet / 生理学报

Many studies have shown that high-altitude exposure could significantly influence human cognition, and the approaches which could enhance the human cognition in high-altitude hypoxia environment attract great attention. In the present study, we recruited a total of 60 subjects who had been migrated to Tibet University as adults for more than one year. These participants were randomly divided into the experimental group and the control group. The participants in the experimental group were instructed to complete a hyperbaric oxygen treatment, and those in the control group just completed a wait condition. By using the attention network test (ANT), the changes of the attention function before and after a single session of hyperbaric oxygen treatment were explored. The results showed that single hyperbaric oxygen treatment significantly improved the orienting function of attention, with an obvious post-intervention effect, but not the alerting and conflict function of attention. We also found a strong association between alerting function and conflict function after the end of intervention, suggesting the change of the overall performance of attention function. The present findings might suggest that the improvement of attention function by a single session of hyperbaric oxygen intervention is derived from the increase of general cognitive resources, rather than the transfer of cognitive resources within the attention system.

Vestigial auriculomotor activity indicates the direction of auditory attention in humans.

Unlike dogs and cats, people do not point their ears as they focus attention on novel, salient, or task-relevant stimuli. Our species may nevertheless have retained a vestigial pinna-orienting system that has persisted as a 'neural fossil' within in the brain for about 25 million years. Consistent with this hypothesis, we demonstrate that the direction of auditory attention is reflected in sustained electrical activity of muscles within the vestigial auriculomotor system. Surface electromyograms (EMGs) were taken from muscles that either move the pinna or alter its shape. To assess reflexive, stimulus-driven attention we presented novel sounds from speakers at four different lateral locations while the participants silently read a boring text in front of them. To test voluntary, goal-directed attention we instructed participants to listen to a short story coming from one of these speakers, while ignoring a competing story from the corresponding speaker on the opposite side. In both experiments, EMG recordings showed larger activity at the ear on the side of the attended stimulus, but with slightly different patterns. Upward movement (perking) differed according to the lateral focus of attention only during voluntary orienting; rearward folding of the pinna's upper-lateral edge exhibited such differences only during reflexive orienting. The existence of a pinna-orienting system in humans, one that is experimentally accessible, offers opportunities for basic as well as applied science.

Dogs, cats, monkeys and other animals perk their ears in the direction of sounds they are interested in. Humans and their closest ape relatives, however, appear to have lost this ability. Some humans are able to wiggle their ears, suggesting that some of the brain circuits and muscles that allow automatic ear movements towards sounds are still present. This may be a 'vestigial feature', an ability that is maintained even though it no longer serves its original purpose. Now, Strauss et al. show that vestigial movements of muscles around the ear indicate the direction of sounds a person is paying attention to. In the experiments, human volunteers tried to read a boring text while surprising sounds like a traffic jam, a baby crying, or footsteps played. During this exercise, Strauss et al. recorded the electrical activity in the muscles of their ears to see if they moved in response to the direction the sound came from. In a second set of experiments, the same electrical recordings were made as participants listened to a podcast while a second podcast was playing from a different direction. The individuals' ears were also recorded using high resolution video. Both sets of experiments revealed tiny involuntary movements in muscles surrounding the ear closest to the direction of a sound the person is listening to. When the participants tried to listen to one podcast and tune out another, they also made ear 'perking' movements in the direction of their preferred podcast. The results suggest that movements of the vestigial muscles in the human ear indicate the direction of sounds a person is paying attention to. These tiny movements could be used to develop better hearing aids that sense the electrical activity in the ear muscles and amplify sounds the person is trying to focus on, while minimizing other sounds.

What Is Our "Epistemic Responsibility"? Reflections on Social Work's Orientation in Yoga Therapy Research.

The purpose of this article is to explore how the social work discipline could provide a complementary lens through which yoga therapy can be analyzed and evaluated by engaging in knowledge-creation practices and procedures that prioritize the "epistemic responsibility" described by philosopher Lorraine Code. More specifically, by seeking to strategically include often-subjugated types of knowledge and by focusing on redistributing epistemic power to agents that typically have been excluded from epistemic participation in contemporary yoga therapy research, the social work discipline, with its strong commitment to social justice, has the potential to contribute to filling an important gap in scientific literature. We begin by presenting the relevance of the social work perspective in relation to the field of yoga therapy. We next offer a reserved critical analysis of the dominant technical knowledge base that currently informs yoga therapy practice. This analysis highlights the social parameters that may be rendered invisible or left aside when adopting a positivist epistemological lens and justifies how the conceptual apparatus of epistemic responsibility serves as a potential platform for rethinking social work's position and future contributions to the field of yoga therapy. Finally, we mobilize the concept of cultural appropriation to illustrate how striving for epistemic responsibility provides an entry point for addressing the multilevel, complex social processes embedded in yoga therapy practice and research while aiming to capture the many voices-and hence the various truths-implicated in a democratic, reflexive, and inclusive research process.

Perspective taking as virtual navigation? Perceptual simulation of what others see reflects their location in space but not their gaze.

Other peoples' (imagined) visual perspectives are represented perceptually in a similar way to our own, and can drive bottom-up processes in the same way as own perceptual input (Ward, Ganis, & Bach, 2019). Here we test directly whether visual perspective taking is driven by where another person is looking, or whether these perceptual simulations represent their position in space more generally. Across two experiments, we asked participants to identify whether alphanumeric characters, presented at one of eight possible orientations away from upright, were presented normally, or in their mirror-inverted form (e.g. "R" vs. "Я"). In some scenes, a person would appear sitting to the left or the right of the participant. We manipulated either between-trials (Experiment 1) or between-subjects (Experiment 2), the gaze-direction of the inserted person, such that they either (1) looked towards the to-be-judged item, (2) averted their gaze away from the participant, or (3) gazed out towards the participant (Exp. 2 only). In the absence of another person, we replicated the well-established mental rotation effect, where recognition of items becomes slower the more items are oriented away from upright (e.g. Shepard and Meltzer, 1971). Crucially, in both experiments and in all conditions, this response pattern changed when another person was inserted into the scene. People spontaneously took the perspective of the other person and made faster judgements about the presented items in their presence if the characters were oriented towards upright to them. The gaze direction of this other person did not influence these effects. We propose that visual perspective taking is therefore a general spatial-navigational ability, allowing us to calculate more easily how a scene would (in principle) look from another position in space, and that such calculations reflect the spatial location of another person, but not their gaze.

Disruption of the anterior thalamic head direction signal following reduction of the hippocampal theta rhythm.

There is overlap between the structures containing head direction (HD) cells and those mediating the hippocampal theta rhythm, and both signals are thought to play an important role in spatial navigation. Previous research has shown that reversible inactivation of the medial septum attenuates hippocampal theta activity and disrupts path integration-based navigation. Although the HD signal reflects navigational performance, it is unclear whether theta rhythm contributes to the direction-specific activity of HD cells. We sought to determine whether HD cell activity is changed following reversible inactivation of the medial septum to eliminate theta rhythm. HD cells were recorded from the anterodorsal thalamus of female Long-Evans rats while they navigated in a cylindrical environment across standard, landmark rotation, and dark conditions. Following infusions of muscimol into the medial septum, recordings demonstrated a clear decrease in the power of hippocampal theta oscillations. In the landmark rotation experiment, intraseptal administration of muscimol produced HD cells with preferred directions that shifted unpredictably between sessions, suggesting that cue control was affected. Further, following septal inactivation many HD cells were unable to maintain a stable preferred firing direction within the recording sessions when the animals locomoted in the dark, suggesting that idiothetic processing was affected. These findings provide evidence that theta oscillations contribute to the directional stability of HD cells in anterodorsal thalamus. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

Orientation and mobility outcome measures.

Despite orientation and mobility (O&M) being a significant factor determining quality of life of people with low vision or blindness, there are no gold standard measures or agreement on how to measure O&M performance. In the first part of this systematic review, an inventory of O&M outcome measures used by recent studies to assess the performance of orientation and/or mobility of adults with vision impairment (low vision and blindness) is presented. A wide variety of O&M outcome measures have been implemented in different fields of study, such as epidemiologic research and interventional studies evaluating training, assistive technology, vision rehabilitation and vision restoration. The most frequent aspect of outcome measures is efficiency such as time, distance, speed and percentage of preferred walking speed, followed by obstacle contacts and avoidance, and dis/orientation and veering. Other less commonly used aspects are target identification, safety and social interaction and self-reported outcome measures. Some studies employ sophisticated equipment to capture and analyse O&M performance in a laboratory setting, while others carry out their assessment in real-world indoor or outdoor environments. In the second part of this review, the appropriateness of implementing the identified outcome measures to assess O&M performance in clinical and functional O&M practice is evaluated. Nearly a half of these outcome measures meet all four criteria of face validity (either clinical or functional), responsiveness, reliability and feasibility and have the potential to be implemented in clinical or functional O&M practice. The findings of this review confirm the complicated and dynamic nature of O&M. Multiple measures are required in any evaluation of O&M performance to facilitate holistic assessment of O&M abilities and limitations of each individual.