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Various studies have found that urban dwellers with little access to green spaces have a higher incidence of psychological problems than people living near parks and that city dwellers who visit natural environments have lower levels of stress hormones immediately afterward than people who have not recently been outside.

how a visit to a park or other green space might alter mood has been unclear. Does experiencing nature actually change our brains in some way that affects our emotional health?

found that volunteers who walked briefly through a lush, green portion of the Stanford campus were more attentive and happier afterward than volunteers who strolled for the same amount of time near heavy traffic.

This may explain the shape of our movie monsters: creatures with sharp teeth or snake like appearance.

scary movies don’t actually activate fear responses in the amygdala at all. Instead, it was other parts of the brain that were firing – the visual cortex – the part of the brain responsible for processing visual information, the insular cortex- self awareness, the thalamus -the relay switch between brain hemispheres, and the dorsal-medial prefrontal cortex – the part of the brain associated with planning, attention, and problem solving.

Unfortunately for Aristotle, research has shown the opposite – watching violence actually makes people MORE aggressive.

What happens when children reach puberty earlier and adulthood later? The answer is: a good deal of teenage weirdness. Fortunately, developmental psychologists and neuroscientists are starting to explain the foundations of that weirdness.

The crucial new idea is that there are two different neural and psychological systems that interact to turn children into adults. Over the past two centuries, and even more over the past generation, the developmental timing of these two systems has changed. That, in turn, has profoundly changed adolescence and produced new kinds of adolescent woe. The big question for anyone who deals with young people today is how we can go about bringing these cogs of the teenage mind into sync once again

The first of these systems has to do with emotion and motivation. It is very closely linked to the biological and chemical changes of puberty and involves the areas of the brain that respond to rewards. This is the system that turns placid 10-year-olds into restless, exuberant, emotionally intense teenagers, desperate to attain every goal, fulfill every desire and experience every sensation. Later, it turns them back into relatively placid adults.

for hurting others relies on a part of neural anatomy, one that likely evolved before the brain regions responsible for analysis and planning.

hypothetical;

Part of what adults need to learn about self-control is in those videos of 5-year-olds. The children who succeed turn their backs on the cookie, push it away, pretend it’s something nonedible like a piece of wood, or invent a song. Instead of staring down the cookie, they transform it into something with less of a throbbing pull on them.

Adults can use similar methods of distraction and distancing, he says. Don’t eye the basket of bread; just take it off the table. In moments of emotional distress, imagine that you’re viewing yourself from outside, or consider what someone else would do in your place. When a waiter offers chocolate mousse, imagine that a cockroach has just crawled across it

“If you change how you think about it, its impact on what you feel and do changes,”

A walk in the park may soothe the mind and, in the process, change the workings of our brains in ways that improve our mental health, according to an interesting new study

Various studies have found that urban dwellers with little access to green spaces have a higher incidence of psychological problems than people living near parks and that city dwellers who visit natural environments have lower levels of stress hormones immediately afterward than people who have not recently been outside.

Mr. Bratman and his collaborators decided to closely scrutinize what effect a walk might have on a person’s tendency to brood.

there is a darker side to adolescence that, until now, was poorly understood: a surge during teenage years in anxiety and fearfulness. Largely because of a quirk of brain development, adolescents, on average, experience more anxiety and fear and have a harder time learning how not to be afraid than either children or adults.

the brain circuit for processing fear — the amygdala — is precocious and develops way ahead of the prefrontal cortex, the seat of reasoning and executive control. This means that adolescents have a brain that is wired with an enhanced capacity for fear and anxiety, but is relatively underdeveloped when it comes to calm reasoning.

the brain’s reward center, just like its fear circuit, matures earlier than the prefrontal cortex. That reward center drives much of teenagers’ risky behavior. This behavioral paradox also helps explain why adolescents are particularly prone to injury and trauma. The top three killers of teenagers are accidents, homicide and suicide.

a shell-shaped region in the center of the mammalian brain, known as the thalamic reticular nucleus or TRN, is likely responsible for the ability to routinely and seamlessly multitask

ndividual TRN neurons that act like a "switchboard," continuously filtering sensory information and shifting more or less attention onto one sense

blocking out distracting information from other senses

Researchers have found that suppressing activity in part of the brain involved in planning and reasoning can boost an individual’s ability to think in creative ways and solve mind-bending problems.

We can improve very specific think-out-of-the-box [processes], but at the same time we decrease working memory processes,

participants who had been given small amounts of electrical stimulation were three times more likely to solve puzzles than those who had not had their brains “zapped”.

Remember the good old days when kids just watched YouTube all day? Now that they binge on 15-second TikToks, those YouTube clips seem like PBS documentaries.

Many parents tell me their kids can’t sit through feature-length films anymore because to them the movies feel painfully slow. Others have observed their kids struggling to focus on homework. And reading a book? Forget about it.

What is happening to kids’ brains?

Mental labour can also be exhausting. Even resisting that last glistening chocolate-chip cookie after a long day at a consuming desk job is difficult. Cognitive control, the umbrella term encompassing mental exertion, self-control and willpower, also fades with effort.

unlike the mechanism of physical fatigue, the cause of cognitive fatigue has been poorly understood.

It posits that exerting cognitive control uses up energy in the form of glucose. At the end of a day spent intensely cogitating, the brain is metaphorically running on fumes. The problem with this version of events is that the energy cost associated with thinking is minimal.

Political biases are omnipresent, but what we don’t fully understand yet is how they come about in the first place.

In 2014, Michele J. Gelfand, a professor of psychology at the Stanford Graduate School of Business formerly at the University of Maryland, and Jesse R. Harrington, then a Ph.D. candidate, conducted a study designed to rank the 50 states on a scale of “tightness” and “looseness.”

titled “Tightness-Looseness Across the 50 United States,” the study calculated a catalog of measures for each state, including the incidence of natural disasters, disease prevalence, residents’ levels of openness and conscientiousness, drug and alcohol use, homelessness and incarceration rates.

Poverty shapes people in some hard-wired ways that we're only now beginning to understand.

Live in poverty as a child, and it affects you as an adult, too

Those who grew up poor later had impaired brain function as adults—a disadvantage researchers could literally see in the activity of the amygdala and prefrontal cortex on an fMRI scan.

Meltdowns, common as they are among young children, are a complicated physiological response related to the brain’s threat detection system. Mid-freakout, it’s helpful for parents to understand what’s going on beneath the surface, then to mitigate the “threat” by establishing a sense of safety.

temper tantrum involves two parts of the brain: the amygdala, which is primarily responsible for processing emotions like fear or anger; and the hypothalamus, which in part controls unconscious functions like heart rate or temperature.

“When you have a fire burning in your house, you don’t want to sit and ponder, you want your body to fire on all cylinders so you can escape,”

The Neurocognition, Early Experience and Development Lab is home to cutting-edge research on how poverty affects young brains, and I’ve come here to learn how Noble and her colleagues could soon definitively prove that growing up poor can keep a child’s brain from developing.

handful of neuroscientists and pediatricians who’ve seen increasing evidence that poverty itself – and not factors like nutrition, language exposure, family stability, or prenatal issues, as previously thought – may diminish the growth of a child’s brain.

poor kids tended to perform worse academically than their better-off peers

Much of the student population would likely agree that the library’s menacing figure on the quad is nothing short of soul-crushing. New research conducted by a team of architects and neuroscientists suggests that architecture may indeed affect mental states, though they choose to focus on the positive.

I spoke with Dr. Julio Bermudez, the lead of a new study that uses fMRI to capture the effects of architecture on the brain. His team operates with the goal of using the scientific method to transform something opaque—the qualitative “phenomenologies of our built environment”—into neuroscientific observations that architects and city planners can deliberately design for. Bermudez and his team’s research question focuses on buildings and sites designed to elicit contemplation: They theorize that the presence of “contemplative architecture” in one’s environment may over time produce the same health benefits as traditional “internally induced” meditation, except with much less effort by the individual.

By showing 12 architects photos of contemplative and non-contemplative buildings from facade to interior, the researchers were able to observe the brain activity that occurred as subjects "imagined they were transported to the places being shown." All of the architects were white, right-handed men with no prior meditative training, creating the necessary (if comical) uniformity for neuroscientific research—the team wanted to ensure that the brain scans would not be influenced by factors unrelated to the photos, like gender, race, or handedness. For instance, the brain scans of left- and right-handed people often look different even when subjects are performing the same task.

The human brain is more complex than any other known structure in the universe.

Weighing in at three pounds, on average, this spongy mass of fat and protein is made up of two overarching types of cells—called glia and neurons—and it contains many billions of each.

The cerebrum is the largest part of the brain, accounting for 85 percent of the organ's weight. The distinctive, deeply wrinkled outer surface is the cerebral cortex. It's the cerebrum that makes the human brain—and therefore humans—so formidable. Animals such as elephants, dolphins, and whales actually have larger brains, but humans have the most developed cerebrum. It's packed to capacity inside our skulls, with deep folds that cleverly maximize the total surface area of the cortex.

Sleep deprivation had disturbed my vestibular system, making me feel drifting or floating, and had especially interfered with my right TPJ and with it my body schema (Chee & Chua 2007, Quarck et al 2006). Nearly four hours of holding out my arm for the Ouija board had confused my body schema even more. My attention kept wandering and my short term memory was reduced by cannabis (Earleywine 2002).

With my hyperexcitable cortex (Braithwaite et al 2013) already disinhibited by the combination of sleep deprivation and cannabis, it went into random firing, producing an illusory central light and the form constants of spirals and tunnels (Cowan 1982). Disinhibited motion detectors produced illusory movement and as the light grew bigger I seemed to move towards it

My auditory cortex was similarly hyperactive, producing random low-frequency repetitive sounds that drowned out the music. It sounded to me like the pounding of horses’ hooves. I was galloping fast down the tunnel towards the light.

Carnegie Mellon Univ. neuroscientists have identified a new pathway by which several brain areas communicate within the brain's striatum.

the findings illustrate structural and functional connections that allow the brain to use reinforcement learning to make spatial decisions, such as the dorsolateral prefrontal (DLPFC), orbitofrontal cortex (OFC) and posterior parietal cortex (PPC).

Knowing how these specific pathways work together provides crucial insight into how learning occurs

is there such a thing as a “teenage brain”, and does it help to explain the high rates of recklessness among teenagers?

the brain blooms with neural connections until a child reaches the age of 11 or 12, and then it selectively prunes away the underused ones, or “grey matter”, throughout adolescence. As the brain grows more streamlined, it becomes better at processing information.

The remaining connections are then made more efficient by a process called myelination, which essentially insulates neuronal axons with a sheath of fatty cell material, or “white matter”. The process of replacing grey matter with white matter does not reach the prefrontal cortex until people are in their early 20s. Studies show a relationship between increased myelination and an improved ability to make decisions and control impulses.