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driving is already one of the more dangerous activities Americans undertake on a daily basis. According to the National Highway Traffic Safety Administration, “drowsy driving” was a factor in 91,000 crashes, resulting in 50,000 people injured and 810 deaths in 2017, so it’s theoretically possible that what some of these videos are showing us is disaster averted, not disaster in motion.

Tesla once generated widespread good will by promising affordable electric cars that would make the world cleaner and safer. But over time, its image was tarnished by missed deadlines, worrying crash reports, signs of a cultlike corporate culture and a chief executive, Elon Musk, who habitually exaggerates progress while announcing extravagant new ideas. This was hardly the institution you would want determining the future of highway safety.

These technologies — and the companies that engineer them — keep turning out to be less benign than imagined. We fell in love with Amazon, but now we miss the local stores it closed. We couldn’t resist the convenience of Uber and Lyft, but now we’ve seen their effect on public transit and drivers. “Jetsons”-esque smart-home technology turned out to be riddled with glitches and vulnerable to hackers.

Tech companies have hollowed out old industries, shredded privacy, disregarded regulations and created new vectors for the spread of misinformation and extremism, and now there is a sense that choices we have already made — tectonic shifts already in motion, terms of service already accepted — may be changing us in ways that we are only beginning to process, ready to leap up and bite us in the collective behind.

It’s hard to imagine a more potent visual metaphor for this feeling than a human lulled to sleep inside a hunk of metal and glass, hurtling down a highway under the control of proprietary algorithms beamed on board from Palo Alto

These videos are magnetic not just because of the eerie images they contain, but also because, watching them, we can’t actually be sure what we’re seeing. Is this danger or safety or both at once? Perhaps in a different era we would have cried out in excitement: How cool! Today we are more tempted to gasp in shock and call out a warning: Wake up!

fake news is arguably less dangerous than ultra-partisan sites, which tend to rely on confirming prejudices, spinning stories well beyond the bounds of normal journalistic practice, and wearing partisan leanings on their sleeves

Social media is the platform where the war against misleading news is being fought—and it should be the primary focus for these changes, with increased prominence given to trusted outlets, and toning down or turning off the ability for untrustworthy sources to be liked or shared.

with feedback,'' Dr. Snowden said, ''we could teach them to be accurate and drive at a consistent speed.''

drivers were often reluctant to drag their eyes from a foggy road and tended to judge their speed by feel.

''We can't change our visual systems,'' Dr. Snowden said, ''so even when visibility is poor, it's worth having a look down to check your speed.'

This habituation stems from a principle well-known in psychological therapy: The more we’re exposed to a given threat, the less intimidating it seems.

As the pandemic drags on, people are unknowingly performing a kind of exposure therapy on themselves, said University of Oregon psychologist Paul Slovic, author of “The Perception of Risk” — and the results can be deadly.

“You have an experience and the experience is benign. It feels okay and comfortable. It’s familiar. Then you do it again,” Slovic said. “If you don’t see anything immediately bad happening, your concerns get deconditioned.”

The end result of all this desensitizing is a kind of overriding heedlessness decoupled from evidence — the anti-mask movements, the beach gatherings, the overflowing dance parties

One of the best ways to reinforce a certain behavior is to make sure that behavior is rewarded and that deviations from it are punished (or ignored).

But when it comes to lifesaving behaviors such as mask-wearing or staying home from parties, this reward-punishment calculus gets turned on its head.

With parties, when you do the right thing and stay home, “you feel an immediate cost: You’re not able to be with your friends,

while there is an upside to this decision — helping to stop the spread of the virus — it feels distant. “The benefit is invisible, but the costs are very tangible.”

By contrast, Slovic said, when you flout guidelines about wearing masks or avoiding gatherings, you get an immediate reward: You rejoice at not having to breathe through fabric, or you enjoy celebrating a close friend’s birthday in person.

Because risk perception fails as we learn to live with covid-19, Griffin and other researchers are calling for the renewal of tough government mandates to curb virus spread. They see measures such as strict social distancing, enforced masking outside the home and stay-at-home orders as perhaps the only things that can protect us from our own faulty judgment.

But these kinds of measures aren’t enough on their own, Griffin said. It’s also important for authorities to supply in-your-face reminders of those mandates, especially visual cues, so people won’t draw their own erroneous conclusions about what’s safe.

“A few parks have drawn circles [on their lawns]: ‘Don’t go out of the circle,’ ” Griffin said. “We need to take those kinds of metaphors and put them throughout the entire day.”

“The first step is awareness that sometimes you can’t trust your feelings.”

For people considering how to assess covid-19 risks, Slovic advised pivoting from emotionally driven gut reactions to what psychologist Daniel Kahneman — winner of the 2002 Nobel Prize in economics for his integration of psychological research into economic science — calls “slow thinking.” That means making decisions based on careful analysis of the evidence. “You need to either do the slow thinking yourself,” Slovic said, “or trust experts who do the slow thinking and understand the situation.”

Thousands of us are less afraid than we were at the pandemic’s outset, even though in many parts of the country mounting case counts have increased the danger of getting the virus. We’re swarming the beaches and boardwalks, often without masks.

Chronic poor sleep can cause a whole range of mental and physical health issues, including depression and heart disease.

In many cases, they may help the dreamer ameliorate some of their daytime anxieties. Research has found that nightmares can help some people learn to better manage stress.

In much the same way, nightmares—especially those following an upsetting event—may allow a person’s brain to relive the event and move past it, Nadorff says.

“We have the person talk through their nightmare and change it in a way that’s not threatening, and then they practice the new dream during the day using visual imagery,” Nadorff explains. This kind of daily rehearsal can help reshape the scary dream even while a person is sleeping.

Imbued with their own neurons, octopus arms can act semi-autonomously, gathering and exchanging information without routing it through the main brain.

It’s long been unclear, for instance, how the animals, just by probing their surroundings with their limbs, can distinguish something like a crab from a less edible object.

exposed to octopus ink, which is sometimes released as a “warning signal,” Dr. van Giesen said. “Maybe there is some kind of filtering of information that is important for the animal in specific situations,” like when danger is afoot, she said.

But they found that some of the cells in the animal’s suckers would shut down when

Humans, who tend to be very visual creatures, probably can’t fully appreciate the sensory nuances of a taste-sensitive arm

“Sometimes we assume in neuroscience or animal behavior, there’s only one way of doing it

But then again, most people could probably do without the metallic tang of keys every time they rummage in their pockets — or the funk that would inevitably dissuade every new parent from changing a diaper.

(Even after amputation, these adept appendages can still snatch hungrily at morsels of food.)

The cells of octopus suckers are decorated with a mixture of tiny detector proteins. Each type of sensor responds to a distinct chemical cue, giving the animals an extraordinarily refined palate that can inform how their agile arms react, jettisoning an object as useless or dangerous, or nabbing it for a snack.

That arm has all the cellular machinery to taste your tongue right back.

Each type of sensor responds to a distinct chemical cue, giving the animals an extraordinarily refined palate that can inform how their agile arms react, jettisoning an object as useless or dangerous, or nabbing it for a snack.

Octopuses certainly know how to put that processing power to good use.

By mixing and matching these proteins, cells could develop their own unique tasting profiles, allowing the octopus’s suckers to discern flavors in fine gradations, then shoot the sensation to other parts of the nervous system.

Underwater, some chemicals can travel far from their source, making it possible for some creatures to catch a whiff of their prey from afar. But for chemicals that don’t move through the ocean easily, a touch-taste strategy is handy, Dr. Bellono said.

But recent research in my lab suggested that people don’t agree much about what, if anything, they hear in the EVP sounds – a result readily explained by the fallibility of human perception.

In some instances, alleged EVP are the voices of the investigators or interference from radio transmissions – problems that indicate shoddy data collection practices. Other research, however, has suggested that EVP have been captured under acoustically controlled circumstances in recording studios.

Research in mainstream psychology has shown that people will readily perceive words in strings of nonsensical speech sounds.

People’s expectations about what they’re supposed to hear can result in the illusory perception of tones, nature sounds, machine sounds, and even voices when only acoustic white noise – like the sound of a detuned radio – exists.

Interpretations of speech in noise – a situation similar to EVP where the alleged voice is difficult to discern – can shift entirely based upon what the listener expects to hear.

In my lab, we recently conducted an experiment to examine how expectations might influence the perception of purported EVP

So suggesting a paranormal research topic mattered only when the audio was ambiguous.

when people said they heard a voice in the EVP, only 13% agreed about exactly what the voice said. To compare, 95% percent of people on average agreed about what the voice said when they heard actual speech.

These findings suggest that paranormal researchers should not use their own subjective judgments to confirm the contents of EVP.

But perhaps most importantly, we showed that the mere suggestion of a paranormal research context made people more likely to hear voices in ambiguous stimuli, although they couldn’t agree on what the voices were saying.

pareidolia – the tendency to perceive human characteristics in meaningless perceptual patterns

There are many visual examples of pareidolia – things like seeing human faces in everyday objects (such as Jesus in a piece of toast).

Research from cognitive psychology has shown that paranormal believers may be especially prone to misperceiving chance events.

Another characteristic of pseudoscience is a lack of integration with related areas of inquiry. There is a rich history of using experimental methods to examine auditory perception, yet EVP enthusiasts are either unaware or willfully ignorant of this relevant work.

parsimony – the idea that the simplest explanation is preferred

we need a theory to account for how and why a human listener sometimes misperceives ambiguous stimuli.

In fact, this very tendency is one of many well-documented cognitive shortcuts that may have adaptive value. A voice may indicate the presence of a potential mate or foe, so it may be useful to err on the side of perceiving agency in ambiguous auditory stimuli.

Currently, there is only limited, tentative evidence to link exposure to pseudoscience on television to pseudoscientific beliefs. Still, one study showed that people find paranormal research to be more credible and scientific when it is shown using technological tools such as recording devices. Other evidence has suggested that popular opinion may outweigh scientific credibility when people evaluate pseudoscientific claims.

and that they would make perfect theoretical sense. The observation that the VHI was affected by the type of creativity task and performance in the creativity tasks was affected by the synchrony manipulation suggests some degree of overlap between the ways that engaging in particular creativity tasks and experiencing particular degrees of synchrony are able to bias perceived ownership and agency. In terms of our theoretical framework, this implies that engaging in divergent thinking biases metacontrol towards flexibility in similar ways as experiencing synchrony between one’s own movements and those of a virtual effector does, while engaging in convergent thinking biases metacontrol towards persistence as experiencing asynchrony does. What the present findings demonstrate is that both kinds of manipulation together bias the VHI in the predicted direction, but they do not allow to statistically or numerically separate and estimate the contribution that each of the two confounded manipulations might have made. Accordingly, the present findings should not be taken to provide conclusive evidence that priming tasks alone are able to change self-perception without being supported (and perhaps even enabled) by the experience of synchrony

between proprioceptive and visual action feedback.

the illusion was mistakenly referred to as a scientific personality test of right brain/left brain dominance by numerous websites and blogs. In reality, the spinning dancer illusion is related to a bistable perception in which an ambiguous 2-dimensional figure can be seen from two different perspectives.

According to this principle, objects that are grouped together tend to be seen as being part of a whole. We tend to ignore gaps and perceive the contour lines in order to make the image appear as a cohesive whole.

The left cerebral hemisphere is to the “right-brained” poet or novelist as the hamstrings and quadriceps are to a competitive sprinter

Because the ability to understand and produce language is focused in the left side of the brain in almost everyone, caricaturing these creative types as using their right brain more than their left brain is silly.

visual-spatial abilities—localized to the right cerebral hemisphere—are skills that are absolutely critical for “left-brained” talents like science or engineering.

But much of our obsession with the brain’s left and right cerebral hemispheres may have started with studies of split brain patients in the ‘50s. During this time, people who suffered multiple seizures a day underwent intense surgery to treat their epilepsy.

To calm the electrical storms that ravaged these patients’ brains, the nerve fibers connecting the left and right hemispheres of the brain were cut. These fibers are collectively known as the corpus callosum

Once the corpus callosum is severed on the operating table, the new split brain patient appears astonishingly normal at first glance

But careful experiments reveal that this person is really two persons, two streams of consciousness in one body

only the left hemisphere can speak

The right hemisphere cannot speak, but it can point to words like “yes” or “no” to answer a question

Each hemisphere, it seems, maintains independent beliefs and personalities, challenging the notion that we are each an indivisible “self.”

We are all “brain-ambidextrous.”

Embodied cognition is "the sense of drawing you in and making you really feel the quality of the paintings,"

The Birth of Venus" because it makes them feel as though they are floating in with Venus on the seashell. Similarly, viewers can feel the flinging of the paint on the canvas when appreciating a drip painting by Jackson Pollock.

Mirror neurons, cells in the brain that respond similarly when observing and performing an action, are responsible for embodied cognition

Most research on the effects of music education has been done on populations that are privileged enough to afford private music instruction so Kraus is studying music instruction in group settings

"But observing the action requires the information to flow inward from the image you're seeing into the control centers. So that bidirectional flow is what's captured in this concept of mirror neurons and it gives the extra vividness to this aesthetics of art appreciation

Performing an action requires the information to flow out from the control centers to the limbs,

While congenitally blind people usually don't have activation in the visual area of the brain, in brain scans done after the subjects were taught to draw from memory,

Hearing speech in noise is one area in which musicians are uniquely skilled. In standardized tests, musicians across the lifespan were much better than the general public at listening to sentences and repeating them back as the level of background noise increased, Kraus said.

Artists are known to be better observers and exhibit better memory than non-artists. In an effort to see what happens in the brain when an individual is drawing and whether drawing can increase the brain's plasticity

Musicians are also known for their ability to keep rhythm, a skill that is correlated with reading ability and how precisely the brain responds to sound. After one year, students who participated in the group music instruction were faster and more accurate at keeping a beat than students in the control group, Kraus said.

"To sum things up, we are what we do and our past shapes our present," Kraus said. "Auditory biology is not frozen in time. It's a moving target. And music education really does seem to enhance communication by strengthening language skills."

"When you're doing art, your brain is running full speed,"

"It's hitting on all eight cylinders. So if you can figure out what's happening to the brain on art,

While you can't ordinarily see both red and green or both blue and yellow, visual scientist Hewitt Crane and his colleague Thomas Piantanida published a paper in Science claiming such perception was possible. In their 1983 paper "On Seeing Reddish Green and Yellowish Blue" they claimed volunteers viewing adjacent red and green stripes could see reddish green, while viewers of adjacent yellow and blue stripes could see yellowish blue. The researchers used an eye tracker to hold the

The impossible colors reddish green and yellowish blue are imaginary colors that do not occur in the light spectrum. Another type of imaginary color is a chimerical color. A chimerical color is seen by looking at a color until the cone cells are fatigued and then looking at a different color. This produces an afterimage perceived by the brain, not the eyes.Examples of chimerical colors include:Self-luminous colors: Self-luminous colors appear to glow even though no light is emitted. An

Stygian colors: Stygian colors are dark and supersaturated. For example, "stygian blue" may be seen by staring at bright yellow and then looking at black. The normal afterimage is dark blue. When viewed against black, the resulting blue is as dark as black, yet colored. Stygian colors appear on black because certain neurons only fire signals in the dark.Hyperbolic colors:

Impossible colors like reddish green or yellowish blue are trickier to see. To try to see these colors, put a yellow object and blue object right next to each other and cross your eyes so that the two objects overlap. The same procedure works for green and red. The overlapping region may appear to be a mix of the two colors (i.e., green for blue and yellow, brown for red and green), a field of dots of the component colors, or an unfamiliar color that is both red/green or yellow/blue at once!

she captured damselfish from various reefs and put them through a series of challenges. First, she put square plates on either side of their tank. One of these hid a chunk of food that the fish could smell but not reach, while the other hid a more accessible morsel. The damselfish had to learn which plate to swim up to—a simple spatial-memory test, and one that every individual passed. Next, Binning swapped the location of the correct plate; again, all the fish learned to change their behavior.

hings changed when she gave them a more difficult task. This time, they had to approach the correct plate based not on its location, but on its appearance. This skill—visual discrimination—is vitally important to a damselfish. “They have to learn very quickly, on the basis of color and pattern, which fish are safe to be around, and what competitors or friends look like,” says Binning. “They’re very good at that.”

Without the cleaners, the damselfish might also not have enough energy to fully fuel their demanding brains. They’re targeted by parasitic, bloodsucking crustaceans, which makes them “anemic, sluggish, and weak,” Binning says. When cleaners remove these parasites, the distressed damsels can divert their energies toward other matters—like thinking.

Teddy Roosevelt could recite entire newspaper pages—not just articles—as if they were sitting in front of him.

is reported to have read two or three books a day.

was said to have memorized every word of every book he had ever read, estimated at around 9000. It took him up to just 12 seconds to read one page, and each eye could read a page independently.

"Kim's story tells us that the human brain is far more flexible than we had thought,"

"Like many other savants, he has suffered disability in one area of his brain, but has compensated by acquiring remarkable new abilities in other areas. This shows we all have considerable hidden intellectual potential."

may have had a type of photographic memory that helped him memorize sheet music with astonishing speed.

Russian composer Alexander Siloti would give him complicated and demanding works to learn and Rachmaninov (also spelled Rachmaninoff) would have them completely memorized to perfection a day or two later.

3) Organizational encodingWe categorize information according to relationships.

Negative Visualization.

Not only is the language system thoroughly interactive with a high degree of co-activation across words and concepts, but it also impacts our processing in other domains such as vision, attention and cognitive control.

In other words, it is safe to say that the language you speak influences how you see the world not only figuratively but also quite literally, down to the mechanics of your eye movements.