Navigation often requires movement in three-dimensional (3D) space. Recent studies have postulated two different models for how head direction (HD) cells encode 3D space: the rotational plane hypothesis and the dual-axis model. To distinguish these models, we recorded HD cells in female rats while they traveled different routes along both horizontal and vertical surfaces from an elevated platform to the top of a cuboidal apparatus. We compared HD cell preferred firing directions (PFDs) in different planes and addressed the issue of whether HD cell firing is commutative—does the order of the animal's route affect the final outcome of the cell's PFD? Rats locomoted a direct or indirect route from the floor to the cube top via one, two, or three vertical walls. Whereas the rotational plane hypothesis accounted for PFD shifts when the animal traversed horizontal corners, the cell's PFD was better explained by the dual-axis model when the animal traversed vertical corners. Responses also followed the dual-axis model (1) under dark conditions, (2) for passive movement of the rat, (3) following apparatus rotation, (4) for movement around inside vertical corners, and (5) across a 45° outside vertical corner. The order in which the animal traversed the different planes did not affect the outcome of the cell's PFD, indicating that responses were commutative. HD cell peak firing rates were generally equivalent along each surface. These findings indicate that the animal's orientation with respect to gravity plays an important role in determining a cell's PFD, and that vestibular and proprioceptive cues drive these computations.

SIGNIFICANCE STATEMENT Navigating in a three-dimensional (3D) world is a complex task that requires one to maintain a proper sense of orientation relative to both local and global cues. Rodent head direction (HD) cells have been suggested to subserve this sense of orientation, but most HD cell studies have focused on navigation in 2D environments. We investigated the responses of HD cells as rats moved between multiple vertically and horizontally oriented planar surfaces, demonstrating that HD cells align their directional representations to both local (current plane of locomotion) and global (gravity) cues across several experimental conditions, including darkness and passive movement. These findings offer critical insights into the processing of 3D space in the mammalian brain.

Stress alters brain function by modifying the structure and function of neurons and astrocytes. The fine processes of astrocytes are critical for the clearance of neurotransmitters during synaptic transmission. Thus, experience-dependent remodeling of glial processes is anticipated to alter the output of neural circuits. However, the molecular mechanisms that underlie glial structural plasticity are not known. Here we show that a single exposure of male and female mice to an acute stress produced a long-lasting retraction of the lateral processes of cerebellar Bergmann glial cells. These cells express the GluA1 subunit of AMPA-type glutamate receptors, and GluA1 knockdown is known to shorten the length of glial processes. We found that stress reduced the level of GluA1 protein and AMPA receptor-mediated currents in Bergmann glial cells, and these effects were absent in mice devoid of CPEB3, a protein that binds to GluA1 mRNA and regulates GluA1 protein synthesis. Administration of a β-adrenergic receptor blocker attenuated the reduction in GluA1, and deletion of adenylate cyclase 5 prevented GluA1 suppression. Therefore, stress suppresses GluA1 protein synthesis via an adrenergic/adenylyl cyclase/CPEB3 pathway, and reduces the length of astrocyte lateral processes. Our results identify a novel mechanism for GluA1 subunit plasticity in non-neuronal cells and suggest a previously unappreciated role for AMPA receptors in stress-induced astrocytic remodeling.

SIGNIFICANCE STATEMENT Astrocytes play important roles in synaptic transmission by extending fine processes around synapses. In this study, we showed that a single exposure to an acute stress triggered a retraction of lateral/fine processes in mouse cerebellar astrocytes. These astrocytes express GluA1, a glutamate receptor subunit known to lengthen astrocyte processes. We showed that astrocytic structural changes are associated with a reduction of GluA1 protein levels. This requires activation of β-adrenergic receptors and is triggered by noradrenaline released during stress. We identified adenylyl cyclase 5, an enzyme that elevates cAMP levels, as a downstream effector and found that lowering GluA1 levels depends on CPEB3 proteins that bind to GluA1 mRNA. Therefore, stress regulates GluA1 protein synthesis via an adrenergic/adenylyl cyclase/CPEB3 pathway in astrocytes and remodels their fine processes.

Japan’s Yuzuru Hanyu believes he was born to figure skate, but that doesn’t mean he’s immune to pressure and expectations.

Stoking interest in an expected second season of Apple TV+ original "For All Mankind," Apple on Wednesday shared a virtual tour of the show's fictional Jamestown lunar base.

At first glance, it could seem that teenagers just really, really hate high school. But Yale researchers found deeper student engagement issues.

Setting districtwide priorities for SEL and supporting teachers is essential to ensuring consistency, says Atlanta’s director of social-emotional learning in this Q&A.

Recommendations in pediatrics call for general developmental screening of young children; however, research suggests social-emotional development, in particular, is important as an initial indicator of general well-being versus risk, and may warrant inclusion in screening protocols.

Via a social-emotional screening program, significant percentages of children can be identified as being at risk for social-emotional problems, and colocation of an early childhood psychologist promotes the ability to effectively address young children’s social-emotional development within their medical home. (Read the full article)

The US Surgeon General has determined that the relationship between movie smoking exposure (MSE) and youth smoking is causal; however, it is not known whether movie rating influences how adolescents respond.

The response to PG-13–rated MSE was indistinguishable from R-rated MSE. An R rating for smoking could reduce smoking onset in the United States by 18% (by eliminating PG-13 MSE), an effect similar to making all parents maximally authoritative in their parenting. (Read the full article)

Healthy sleep is essential for supporting alertness and other key functional domains required for academic success. Research involving the impact of modest changes in sleep duration on children’s day-to-day behavior in school is limited.

This study shows that modest changes in sleep duration have significant impact on the behavior of typically developing children in school. Modest sleep extension resulted in detectable improvement in behavior, whereas modest sleep restriction had the opposite effect. (Read the full article)

Paternal mental disorders during the postnatal period are associated with an increased risk for behavioral and emotional problems in their children; however, less is known about the effect of fathers’ mental health during pregnancy on children’s development.

The study demonstrated a positive association between fathers’ prenatal mental health and their children’s subsequent socioemotional and behavioral development. Psychological distress in fathers was associated with a risk for emotional difficulties in their children at 36 months of age. (Read the full article)

Peer victimization predicts numerous health risks. Lesbian, gay, and bisexual (LGB)-identified youth report greater peer victimization than do heterosexual-identified youth. No longitudinal studies have been conducted on developmental trends of peer victimization and emotional distress among LGB and heterosexual youth.

We provide the first longitudinal evidence on developmental trends of peer victimization and emotional distress for LGB- and heterosexual-identified youth. The findings suggest peer victimization of LGB-identified youth decreases in absolute, but not necessarily relative, terms and contributes to later emotional distress disparities. (Read the full article)

The effects of previous school-based physical activity promotion interventions have been modest, and none have demonstrated significant or meaningful increases in children’s physical activity outside of school, a period characterized by disproportionally low levels of physical activity in youth.

This study adds to the evidence-base for the effectiveness of comprehensive school health programs by demonstrating that such novel interventions lead to statistically significant, meaningful increases in the amount of physical activity children achieved on weekends and after school hours. (Read the full article)

Maintaining high levels of measles-mumps-rubella immunization is an important public health priority that has been threatened by discredited claims about the safety of the vaccine. Relatively little is known about what messages are effective in overcoming parental reluctance to vaccinate.

Pro-vaccine messages do not always work as intended. The effectiveness of those messages may vary depending on existing parental attitudes toward vaccines. For some parents, they may actually increase misperceptions or reduce vaccination intention. (Read the full article)

Children who have syndromic craniosynostosis are at risk for developing intellectual disability, behavioral and emotional problems. Study results were often based on small samples and wide age-based variation, using non-validated instruments and describing no clear inclusion and exclusion criteria.

Intellectual, behavioral, and emotional functioning is described in a national sample (N = 82) of school-aged children with syndromic craniosynostosis. Using standardized instruments, this study indicates higher risks for intellectual disability and behavioral problems mainly in children having Apert and Muenke syndromes. (Read the full article)

Early parenting programs benefit children’s development in low- and middle-income countries. However, the extent to which these interventions have a positive impact on parenting skills and their emotional availability is less studied.

An early child development intervention using play and communication activities to promote caregivers’ responsiveness can improve mother–child interactions, caregiving environment, caregiving practices pertaining to development and feeding, and, in combination with a nutrition intervention, support maternal emotional well-being. (Read the full article)

Motion smoothing is horrible for most of what you watch, but it can make live sports look much better. Here's why you should turn on motion smoothing for watching games.

To view more press releases, please visit http://ir.wintrust.com/news.aspx?iid=1024452.

UEFA has produced a free to download flier 'Master the Ball' in 11 languages explaining the benefits and laws of futsal with testimonies from the likes of Lionel Messi.

Internal documents reveal Amazon sees this as a health and wellness product that's voice-activated and controlled via a smartphone app.

Partnering with parents can help students of any age who have trouble with social or mental health issues. But the devil is in the details, finds an analysis of more than 100 studies.

More than $336,000 in federal grant funding is now available for projects to help produce, market or access Delaware-grown fruit, vegetables and certain other crops.

H K Digital Online offers Cheap Website Promotion, Search Engine Optimization, Web Promotion Services, SEO Services with affordable rates.

On 26 November 2019 the FCA announced that it was using its product intervention powers to ban the promotion of so-called “speculative mini bonds” to retail consumers. The ban will come into force on 1 January and will last for 12 months...

Eversheds Sutherland has announced 38 partner promotions across its global network. A total of 16 of these promotions are female which is in line with its goal to achieve 30% female representation at partner level by 2021.  In Asia, we are plea...

Eversheds Sutherland announces that it has made 38 partner promotions across its International and Europe network. A total of 16 of these promotions are female which is in line with its goal to achieve 30% female representation at partner level by 2...

The Mental Health Association, a Turkish-based non-governmental organization, has found the Maiden Tower in Istanbul is where the users of a smartphone application found the most romantic place in Istanbul, Turkey’s largest city.

I have spoken to a number of Members of Parliament. Some say, the President “undressed” them before the electorate

This week, hide behind the sofa from mind-altering plants, listen and learn from technologies past and find out how the world is underpinned by numbers

Title: Does Botox Affect How You Read Emotions?
Category: Health News
Created: 4/26/2011 1:54:00 PM
Last Editorial Review: 4/26/2011 12:00:00 AM

Title: Health Tip: Avoid Emotional Eating
Category: Health News
Created: 5/2/2013 8:35:00 AM
Last Editorial Review: 5/2/2013 12:00:00 AM

Title: Early Emotional Support May Help Kids Manage Feelings Later
Category: Health News
Created: 4/26/2016 12:00:00 AM
Last Editorial Review: 4/27/2016 12:00:00 AM

After a week seeing cancer patients with COVID-19 as the inpatient consult attending, Don Dizon finds himself more emotionally exhausted than he's ever been before.

Our study in PNAS (1) applies a mathematically based framework to the study of reported emotional experience evoked by music in the United States and China. Germane to theoretical debate, our methods reveal how specific emotions such as “triumph” are more primary across cultures than valence and arousal, a finding...

Wael Salem, Benjamin Cellini, Mark A. Frye, and Jean-Michel Mongeau

Most animals shift gaze by a ‘fixate and saccade’ strategy, where the fixation phase stabilizes background motion. A logical prerequisite for robust detection and tracking of moving foreground objects, therefore, is to suppress the perception of background motion. In a virtual reality magnetic tether system enabling free yaw movement, Drosophila implemented a fixate and saccade strategy in the presence of a static panorama. When the spatial wavelength of a vertical grating was below the Nyquist wavelength of the compound eyes, flies drifted continuously­ and gaze could not be maintained at a single location. Because the drift occurs from a motionless stimulus—thus any perceived motion stimuli are generated by the fly itself—it is illusory, driven by perceptual aliasing. Notably, the drift speed was significantly faster than under a uniform panorama suggesting perceptual enhancement due to aliasing. Under the same visual conditions in a rigid tether paradigm, wing steering responses to the unresolvable static panorama were not distinguishable from a resolvable static pattern, suggesting visual aliasing is induced by ego motion. We hypothesized that obstructing the control of gaze fixation also disrupts detection and tracking of objects. Using the illusory motion stimulus, we show that magnetically tethered Drosophila track objects robustly in flight even when gaze is not fixated as flies continuously drift. Taken together, our study provides further support for parallel visual motion processing and reveals the critical influence of body motion on visuomotor processing. Motion illusions can reveal important shared principles of information processing across taxa.

Long noncoding RNA molecules (lncRNAs) are estimated to account for the majority of eukaryotic genomic transcripts, and have been associated with multiple diseases in humans. However, our understanding of their structure–function relationships is scarce, with structural evidence coming mostly from indirect biochemical approaches or computational predictions. Here we describe direct visualization of the lncRNA HOTAIR (HOx Transcript AntIsense RNA) using atomic force microscopy (AFM) in nucleus-like conditions at 37°. Our observations reveal that HOTAIR has a discernible, although flexible, shape. Fast AFM scanning enabled the quantification of the motion of HOTAIR, and provided visual evidence of physical interactions with genomic DNA segments. Our report provides a biologically plausible description of the anatomy and intrinsic properties of HOTAIR, and presents a framework for studying the structural biology of lncRNAs.

It has been identified that arginine vasopressin (AVP), vasopressin receptor 2(V2R), and the aquaporin 2 (AQP2) signaling pathway in the inner ear play important roles in hearing and balance functions through regulating the endolymph equilibrium; however, the contributions of this signaling pathway to the development of motion sickness are unclear. The present study was designed to investigate whether the activation of the AVP-V2R-AQP2 signaling pathway in the inner ear is involved in the induction of motion sickness and whether mozavaptan, a V2R antagonist, could reduce motion sickness. We found that both rotatory stimulus and intraperitoneal AVP injection induced conditioned taste aversion (a confirmed behavioral index for motion sickness) in rats and activated the AVP-V2R-AQP2 signaling pathway with a responsive V2R downregulation in the inner ears, and AVP perfusion in cultured epithelial cells from rat endolymphatic sacs induced similar changes in this pathway signaling. Vestibular training, V2R antagonist mozavaptan, or PKA inhibitor H89 blunted these changes in the V2R-AQP2 pathway signaling while reducing rotatory stimulus– or DDAVP (a V2R agonist)-induced motion sickness in rats and dogs. Therefore, our results suggest that activation of the inner ear AVP-V2R-AQP2 signaling pathway is potentially involved in the development of motion sickness; thus, mozavaptan targeting AVP V2Rs in the inner ear may provide us with a new application option to reduce motion sickness.

This week, hide behind the sofa from mind-altering plants, listen and learn from technologies past and find out how the world is underpinned by numbers

While this experiment may sound odd, it could represent the start of a whole new field of research.

Your weekly selection of awesome robot videos

Getting less sleep for five nights in a row can make you view other people’s expressions more negatively, including facial reactions seen over video calls

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The teenage daughter of a man who was stabbed to death in the street issued an emotional plea today for justice on the first anniversary of his killing.

Former Olympic rower Kenny Dwan has recalled the emotional moment he left hospital after a three-week battle with coronavirus.

Doctors performed an emotional rendition of Ave Maria to celebrate the recovery of a fellow nurse from the coronavirus.

This is the emotional moment NHS staff lined the corridors to applaud a 62-year-old coronavirus survivor as he left intensive care after five weeks.

It was a special episode to mark Mother's Day in the US.