Health experts agree that there is a clear connection between an individual’s dental health and mental health. But although this fact is supported by a number of clinical studies, it is rarely explored or discussed among health professionals. A person with poor oral health may experience bad breath, tooth loss, compromised speech and other symptoms […]

The post How Innovations in Dental Services Transform Patient Care and Improve Mental Health first appeared on What is Psychology?.

Millions of Americans suffer from depression, anxiety, and other mental health conditions. And yet, many do not even know about the countless self-care practices for maintaining mental health and wellbeing. We will uncover some of the most effective practices for dealing with these issues. Let’s jump right in. #1: Regular Physical Activity Exercise is a […]

The post Self-Care Practices for Maintaining Mental Health and Wellbeing first appeared on What is Psychology?.

Did you grow up in a world void of social media platforms? Then, you’re probably the last ‘lucky’ generation. A part of Generation Y and most of Generation Z have been raised alongside the internet and social media. Individuals belonging to the latter have practically been raised by such platforms, as they interact with strangers […]

The post Sacrificing the Human Psyche at the Altar of Social Media? 4 Concerning Ill-Effects to Know first appeared on What is Psychology?.

The Department of Psychology at the University of Michigan, Ann Arbor, invites applications for a full-time, tenure-track Assistant Professor in human decision science, broadly construed.

Although common ‘disorders’ (e.g., eating disorders, anxiety, and depression) look different on the surface, there are some common underlying mechanisms. One of these is checking. I’m going to go explain the role of checking in a selection of common mental health problems. Checking in Health Anxiety Examples: – Person goes to the Dr for blood […]

The post CBT: How Checking Contributes to Mental Health Problems (Eating Disorders, Depression, Anxiety) appeared first on Dr Alice Boyes.

Keeping up with students’ growing mental-health needs was a concern for districts long before the pandemic began. It’s even harder now, educators and psychologists say.

In this fourth installment on the growth in dual-language learning, the director of dual-language education in Portland, Ore., says schools must have a clear reason for why they are offering dual-language instruction.

The state requested a waiver from the federal requirement in January. Failure to meet the 95-percent requirement can lead to funding penalties for states.

Keeping up with students’ growing mental-health needs was a concern for districts long before the pandemic began. It’s even harder now, educators and psychologists say.

Students returning to schools in Virginia and New York this fall will be required to participate in mental-health education as part of their health and physical education courses.

Two lawsuits were filed Monday challenging a proposition that Arizona voters approved to impose an additional 3.5% tax on individuals earning above $250,000 to pay school teacher salaries and training.

Teacher-evaluation reforms in places like New Mexico, Tennessee, Denver, and the District of Columbia have paid off, says the National Council on Teacher Quality.

Hopson became the interim superintendent in Shelby County, Tenn., in 2013 after the Memphis City School system merged with Shelby County schools. That merger then led six suburban communities to break away from the merged school system to form their own school districts.

A state department leader outlines the challenges and benefits of partnering with researchers in school turnaround efforts in Tennessee.

Keeping up with students’ growing mental-health needs was a concern for districts long before the pandemic began. It’s even harder now, educators and psychologists say.

The three board members, along with a resident, request that the court grant a restraining order and preliminary injunction against the state to reverse the takeover.

The Montreal Canadiens are struggling on many fronts this season and goaltending is not an exception.

Sharon G. Kujawa
Nov 11, 2009; 29:14077-14085
BehavioralSystemsCognitive

Guo-qiang Bi
Dec 15, 1998; 18:10464-10472
Articles

Laura Medlock
Apr 13, 2022; 42:3133-3149
Systems/Circuits

Prithviraj Rajebhosale
Oct 23, 2024; 44:e0063242024-e0063242024
Cellular

Jesse J. Langille
Jul 3, 2019; 39:5244-5246
Journal Club

Danilo De Gregorio
Feb 3, 2021; 41:891-900
Symposium and Mini-Symposium

Randy L. Buckner
Aug 24, 2005; 25:7709-7717
Neurobiology of Disease

Neuronal cytotoxic edema is implicated in neuronal injury and death, yet mitigating brain edema with osmotic and surgical interventions yields poor clinical outcomes. Importantly, neuronal swelling and its downstream consequences during early brain development remain poorly investigated, and new treatment approaches are needed. We explored Ca²⁺-dependent downstream effects after neuronal cytotoxic edema caused by diverse injuries in mice of both sexes using multiphoton Ca²⁺ imaging in vivo [Postnatal Day (P)12–17] and in acute brain slices (P8–12). After different excitotoxic insults, cytosolic GCaMP6s translocated into the nucleus after a few minutes in a subpopulation of neurons, persisting for hours. We used an automated morphology-detection algorithm to detect neuronal soma and quantified the nuclear translocation of GCaMP6s as the nuclear to cytosolic intensity (N/C ratio). Elevated neuronal N/C ratios occurred concurrently with persistent elevation in Ca²⁺ loads and could also occur independently from neuronal swelling. Electron microscopy revealed that the nuclear translocation was associated with the increased nuclear pore size. The nuclear accumulation of GCaMP6s in neurons led to neocortical circuit dysfunction, mitochondrial pathology, and increased cell death. Inhibiting calpains, a family of Ca²⁺-activated proteases, prevented elevated N/C ratios and neuronal swelling. In summary, in the developing brain, we identified a calpain-dependent alteration of nuclear transport in a subpopulation of neurons after disease-relevant insults leading to long-term circuit dysfunction and cell death. The nuclear translocation of GCaMP6 and other cytosolic proteins after acute excitotoxicity can be an early biomarker of brain injury in the developing brain.

When faced with danger, human beings respond with a repertoire of defensive behaviors, including freezing and active avoidance. Previous research has revealed a pattern of physiological responses, characterized by heart rate bradycardia, reduced visual exploration, and heightened sympathetic arousal in reaction to avoidable threats, suggesting a state of attentive immobility in humans. However, the electrocortical underpinnings of these behaviors remain largely unexplored. To investigate the visuocortical components of attentive immobility, we recorded parieto-occipital alpha activity, along with eye movements and autonomic responses, while participants awaited either an avoidable, inevitable, or no threat. To test the robustness and generalizability of our findings, we collected data from a total of 101 participants (76 females, 25 males) at two laboratories. Across sites, we observed an enhanced suppression of parieto-occipital alpha activity during avoidable threats, in contrast to inevitable or no threat trials, particularly toward the end of the trial that prompted avoidance responses. This response pattern coincided with heart rate bradycardia, centralization of gaze, and increased sympathetic arousal. Furthermore, our findings expand on previous research by revealing that the amount of alpha suppression, along with centralization of gaze, and heart rate changes predict the speed of motor responses. Collectively, these findings indicate that when individuals encounter avoidable threats, they enter a state of attentive immobility, which enhances perceptual processing and facilitates action preparation. This state appears to reflect freezing-like behavior in humans.

The GluN3A subunit of N-methyl-D-aspartate receptors (NMDARs) plays an established role in synapse development, but its contribution to neural circuits in the adult brain is less clear. Recent work has demonstrated that in select cell populations, GluN3A assembles with GluN1 to form GluN1/GluN3A receptors that are insensitive to glutamate and instead serve as functional excitatory glycine receptors (eGlyRs). Our understanding of these eGlyRs, and how they contribute to intrinsic excitability and synaptic communication within relevant networks of the developing and the mature brain, is only beginning to be uncovered. Here, using male and female mice, we demonstrate that GluN3A subunits are enriched in the adult ventral hippocampus (VH), where they localize to synaptic and extrasynaptic sites and can assemble as functional eGlyRs on CA1 pyramidal cells. GluN3A expression was barely detectable in the adult dorsal hippocampus (DH). We also observed a high GluN2B content in the adult VH, characterized by slow NMDAR current decay kinetics and a high sensitivity to the GluN2B-containing NMDAR antagonist ifenprodil. Interestingly, the GluN2B enrichment in the adult VH was dependent on GluN3A as GluN3A deletion accelerated NMDAR decay and reduced ifenprodil sensitivity in the VH, suggesting that GluN3A expression can regulate the balance of conventional NMDAR subunit composition at synaptic sites. Lastly, we found that GluN3A knock-out also enhanced both NMDAR-dependent calcium influx and NMDAR-dependent long-term potentiation in the VH. Together, these data reveal a novel role for GluN3A and eGlyRs in the control of ventral hippocampal circuits in the mature brain.

Human sleep exhibits multiple, recurrent temporal regularities, ranging from circadian rhythms to sleep stage cycles and neuronal oscillations during nonrapid eye movement sleep. Moreover, recent evidence revealed a functional role of aperiodic activity, which reliably discriminates different sleep stages. Aperiodic activity is commonly defined as the spectral slope of the 1/frequency (1/f) decay function of the electrophysiological power spectrum. However, several lines of inquiry now indicate that the aperiodic component of the power spectrum might be better characterized by a superposition of several decay processes with associated timescales. Here, we determined multiple timescales, which jointly shape aperiodic activity using human intracranial electroencephalography. Across three independent studies (47 participants, 23 female), our results reveal that aperiodic activity reliably dissociated sleep stage-dependent dynamics in a regionally specific manner. A principled approach to parametrize aperiodic activity delineated several, spatially and state-specific timescales. Lastly, we employed pharmacological modulation by means of propofol anesthesia to disentangle state-invariant timescales that may reflect physical properties of the underlying neural population from state-specific timescales that likely constitute functional interactions. Collectively, these results establish the presence of multiple intrinsic timescales that define the electrophysiological power spectrum during distinct brain states.

Neuregulin1 (Nrg1) signaling is critical for neuronal development and function from fate specification to synaptic plasticity. Type III Nrg1 is a synaptic protein which engages in bidirectional signaling with its receptor ErbB4. Forward signaling engages ErbB4 phosphorylation, whereas back signaling engages two known mechanisms: (1) local axonal PI3K-AKT signaling and (2) cleavage by -secretase resulting in cytosolic release of the intracellular domain (ICD), which can traffic to the nucleus (Bao et al., 2003; Hancock et al., 2008). To dissect the contribution of these alternate signaling strategies to neuronal development, we generated a transgenic mouse with a missense mutation (V₃₂₁L) in the Nrg1 transmembrane domain that disrupts nuclear back signaling with minimal effects on forward signaling or local back signaling and was previously found to be associated with psychosis (Walss-Bass et al., 2006). We combined RNA sequencing, retroviral fate mapping of neural stem cells, behavioral analyses, and various network analyses of transcriptomic data to investigate the effect of disrupting Nrg1 nuclear back signaling in the dentate gyrus (DG) of male and female mice. The V₃₂₁L mutation impairs nuclear translocation of the Nrg1 ICD and alters gene expression in the DG. V₃₂₁L mice show reduced stem cell proliferation, altered cell cycle dynamics, fate specification defects, and dendritic dysmorphogenesis. Orthologs of known schizophrenia (SCZ)-susceptibility genes were dysregulated in the V₃₂₁L DG. These genes coordinated a larger network with other dysregulated genes. Weighted gene correlation network analysis and protein interaction network analyses revealed striking similarity between DG transcriptomes of V₃₂₁L mouse and humans with SCZ.

Low-intensity transcranial focused ultrasound stimulation (TUS) is a novel technique for noninvasive brain stimulation (NIBS). TUS delivered in a theta (5 Hz) burst pattern (tbTUS) induces plasticity in the human primary motor cortex (M1) for 30–60 min, showing promise for therapeutic development. Metaplasticity refers to activity-dependent changes in neural functions governing synaptic plasticity; depotentiation is the reversal of long-term potentiation (LTP) by a subsequent protocol with no effect alone. Metaplasticity can enhance plasticity induction and clinical efficacy of NIBS protocols. In our study, we compared four NIBS protocol combinations to investigate metaplasticity on tbTUS in humans of either sex. We delivered four interventions: (1) sham continuous theta burst stimulation with 150 pulses (cTBS150) followed by real tbTUS (tbTUS only), (2) real cTBS150 followed by sham tbTUS (cTBS only), (3) real cTBS150 followed by real tbTUS (metaplasticity), and (4) real tbTUS followed by real cTBS150 (depotentiation). We measured motor-evoked potential amplitude, short-interval intracortical inhibition, long-interval intracortical inhibition, intracortical facilitation (ICF), and short-interval intracortical facilitation before and up to 90 min after plasticity intervention. Plasticity effects lasted at least 60 min longer when tbTUS was primed with cTBS150 compared with tbTUS alone. Plasticity was abolished when cTBS150 was delivered after tbTUS. cTBS150 alone had no significant effect. No changes in M1 intracortical circuits were observed. Plasticity induction by tbTUS can be modified in manners consistent with homeostatic metaplasticity and depotentiation. This substantiates evidence that tbTUS induces LTP-like processes and suggests that metaplasticity can be harnessed in the therapeutic development of TUS.

FAO Director-General José Graziano da Silva will be away from Rome during the next few weeks. During this period he will be involved in a range of [...]

Policy makers should support a broad array of approaches to overhauling global food systems, [...]

Rome, 2 December 2014 – The Ministers of Agriculture of the European Union and of other Mediterranean countries welcomed FAO’s transformational changes implemented in the last two years, and underlined [...]

Berlin- FAO Director-General José Graziano da Silva has highlighted some of the most important events on the organization’s 2015 calendar during meetings with agriculture ministers who attended the Global Forum [...]

With rapid soil degradation, fast depletion of groundwater, excessive use of pesticides-fertilizers and extreme weather events all collectively putting stress on farming and forestry, it is time to recognise the [...]

MANUEL PLANELLES, EL PAÍS, Paris- “Agriculture is seen as a threat in the fight against climate change,” Maria Helena Semedo warns. The Deputy Director-General of the Food and Agriculture Organization [...]

February’s international symposium, entitled “The role of agricultural biotechnologies in sustainable food systems and nutrition”, will explore how the application of science and technology, and particularly agricultural biotechnologies, can benefit [...]

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In order to celebrate Malta’s presidency to the European Union Council for 2017 FAO is hosting an exhibit in the atrium, focusing on issues of migration and oceans - both [...]

Since the 1990s, rural transformations have helped millions of people exit poverty while remaining in rural areas. This underscores an important fact: revitalising rural economies helps create jobs for rural [...]