How Sleep Helps to Process Emotion

AHA Publisher — Mon, 16 May 2022 07:00:30 +0000

University of Bern via Newswise – Researchers at the Department of Neurology of the University of Bern and University Hospital Bern identified how the brain triages emotions during dream sleep to consolidate the storage of positive emotions while dampening the consolidation of negative ones. The work expands the importance of sleep in mental health and opens new ways of therapeutic strategies. Rapid eye movement (REM or paradoxical) sleep is a unique and mysterious sleep state during which most of the dreams occur together with intense emotional contents. How and why these emotions are reactivated is unclear. The prefrontal cortex integrates many of these emotions during wakefulness but appears paradoxically quiescent during REM sleep. «Our goal was to understand the underlying mechanism and the functions of such a surprising phenomenon», says Prof. Antoine Adamantidis from the Department of Biomedical Research (DBMR) at the University of Bern and the Department of Neurology at the Inselspital, University Hospital of Bern. Processing emotions, particularly distinguishing between danger and safety, is critical for the survival of animals. In humans, excessively negative emotions, such as fear reactions and states of anxiety, lead to pathological states like Post-Traumatic Stress Disorders (PTSD). In Europe, roughly 15% of the population is affected by persistent anxiety and severe mental illness. The research group headed by Antoine Adamantidis is now providing insights into how the brain helps to reinforce positive emotions and weaken strongly negative or traumatic emotions during REM sleep. This study was published in the journal Science. A Dual Mechanism The researchers first conditioned mice to recognize auditory stimuli associated with safety and others associated with danger (aversive stimuli). The activity of neurons in the brain of mice was then recorded during sleep-wake cycles. In this way, the researchers were able to map different areas of a cell and determine how emotional memories are transformed during REM sleep. Neurons are composed of a cell body (soma) that integrates information coming from the dendrites (inputs) and send signals to other neurons via their axons (outputs). The results obtained showed that cell somas are kept silent while their dendrites are activated. «This means a decoupling of the two cellular compartments, in other words soma wide asleep and dendrites wide awake», explains Adamantidis. This decoupling is important because the strong activity of the dendrites allows the encoding of both danger and safety emotions, while the inhibitions of the soma completely block the output of the circuit during REM sleep. In other words, the brain favours the discrimination of safety versus danger in the dendrites, but block the over-reaction to emotion, in particular danger. A Survival Advantage According to the researchers, the coexistence of both mechanisms is beneficial to the stability and survival of the organisms: «This bi-directional mechanism is essential to optimize the discrimination between dangerous and safe signals», says Mattia Aime from the DBMR, first author of the study. If this discrimination is missing in humans and excessive fear reactions are generated, this can lead to anxiety disorders. The findings are particularly relevant to pathological conditions such as post-traumatic stress disorders, in which trauma is over-consolidated in the prefrontal cortex, day after day during sleep. Breakthrough for Sleep Medicine These findings pave the way to a better understanding of the processing of emotions during sleep in humans and open new perspectives for therapeutic targets to treat maladaptive processing of traumatic memories, such as Post Traumatic Stress Disorders (PTSD) and their early sleep-dependent consolidation. Additional acute or chronic mental health issues that may implicate this somatodendritic decoupling during sleep include acute and chronic stress, anxiety, depression, panic, or even anhedonia, the inability to feel pleasure. Sleep research and sleep medicine have long been a research focus of the University of Bern and the Inselspital, Bern University Hospital. «We hope that our findings will not only be of interest to the patients, but also to the broad public», says Adamantidis. To read the original aritcle click here.

The post How Sleep Helps to Process Emotion appeared first on Amazing Health Advances.

Social Media Break Improves Mental Health – New Study

AHA Publisher — Wed, 11 May 2022 07:00:19 +0000

University of Bath via Newswise – Asking people to stop using social media for just one week could lead to significant improvements in their wellbeing, depression and anxiety and could, in the future, be recommended as a way to help people manage their mental health say the authors of a new study. The study, carried out by a team of researchers at the University of Bath (UK), studied the mental health effects of a week-long social media break. For some participants in the study, this meant freeing-up around nine hours of their week which would otherwise have been spent scrolling Instagram, Facebook, Twitter and TikTok. Their results – published today (Friday 6 May 2022) in the US journal ‘Cyberpsychology, Behaviour and Social Networking’ – suggest that just one week off social media improved individuals’ overall level of well-being, as well as reduced symptoms of depression and anxiety. For the study, the researchers randomly allocated 154 individuals aged 18 to 72 who used social media every day into either an intervention group, where they were asked to stop using all social media for one-week or a control group, where they could continue scrolling as normal. At the beginning of the study, baseline scores for anxiety, depression and wellbeing were taken. Participants reported spending an average of 8 hours per week on social media at the start of the study. One week later, the participants who were asked to take the one-week break had significant improvements in wellbeing, depression, and anxiety than those who continued to use social media, suggesting a short-term benefit. Participants asked to take a one-week break reported using social media for an average of 21 minutes compared to an average of seven hours for those in the control group. Screen usage stats were provided to check that individuals had adhered to the break. Lead researcher from Bath’s Department for Health, Dr Jeff Lambert explains: “Scrolling social media is so ubiquitous that many of us do it almost without thinking from the moment we wake up to when we close our eyes at night. “We know that social media usage is huge and that there are increasing concerns about its mental health effects, so with this study, we wanted to see whether simply asking people to take a week’s break could yield mental health benefits. “Many of our participants reported positive effects from being off social media with improved mood and less anxiety overall. This suggests that even just a small break can have an impact. “Of course, social media is a part of life and for many people, it’s an indispensable part of who they are and how they interact with others. But if you are spending hours each week scrolling and you feel it is negatively impacting you, it could be worth cutting down on your usage to see if it helps.” The team now want to build on the study to see whether taking a short break can help different populations (e.g., younger people or people with physical and mental health conditions). The team also want to follow people up for longer than one week, to see if the benefits last over time. If so, in the future, they speculate that this could form part of the suite of clinical options used to help manage mental health. Over the past 15 years, social media has revolutionised how we communicate, underscored by the huge growth the main platforms have observed. In the UK the number of adults using social media increased from 45% in 2011 to 71% in 2021. Among 16 to 44-year-olds, as many as 97% of us use social media and scrolling is the most frequent online activity we perform. Feeling ‘low’ and losing pleasure are core characteristics of depression, whereas anxiety is characterised by excessive and out of control worry. Wellbeing refers to an individual’s level of positive affect, life satisfaction and sense of purpose. According to the Mind, one in six of us experience a common mental health problem like anxiety and depression in any given week. To read the original article click here.

The post Social Media Break Improves Mental Health – New Study appeared first on Amazing Health Advances.

managing depression Archives - Amazing Health Advances

How Sleep Helps to Process Emotion

Social Media Break Improves Mental Health – New Study