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Extraordinary Human Abilities – Part 3: Absolute pitch
Absolute Pitch, or Perfect Pitch, is the ability to name or reproduce a tone with nothing but your mind.
People with absolute pitch are capable of identifying and reproducing a tone without needing a known reference.
It is not simply a better ability to hear but the ability to mentally class sounds into remembered categories. Examples of this include identifying the pitch of everyday noises (e.g. horns, sirens, and engines), being able to sing a named note without hearing a reference, naming the tones of a chord, or naming the key signature of a song.
Doing any of these is a cognitive act – it requires one to remember the frequency of each tone, be able to label it (e.g. ‘A’, ‘C#’, or ‘F-flat’), and sufficient exposure to the range of sound within each label. Opinions vary as to whether absolute pitch is genetic or a learned ability that is strongly influenced to one’s exposure to music at crucial developmental stages – much like how a child’s ability to identify colors by their frequency depends on the type and level of their exposure to it.
Estimates of the portion of the population having absolute pitch range from 3% of the general population in the US and Europe to 8% of those (from the same areas) who are semi-professional or professional musicians. In music conservatories in Japan however, about 70% of musicians have absolute pitch. Part of the reason for this significantly larger percentage may be because absolute pitch is more common among people who grew up in a tonal (Mandarin, Cantonese, and Vietnamese) or pitch accent (Japanese) language environment.
Absolute pitch is also more common in those who are blind from birth, have William’s Syndrome, or have an autism spectrum disorder.
Here’s a documentary excerpt about perfect pitch:
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Awesome discovery of the week: Glass melts when it gets too cold
about 11 months ago - No comments
Anyone who’s seen enough old Sesame Street episodes or been to enough Renaissance Fairs knows that when glass gets hot enough, it turns to liquid. Applied heat pumps energy into the solid pieces of glass, getting their molecules jiggling. As the heat dissipates, the glass becomes cool and solidifies again.p
Glass melts when it gets too cold
Most of the time, not many interesting things happen once a substance gets below the temperature required for solidification. Its atoms are bound to one another, and without the introduction of some kind of energy, they’ll stay that way. Glass, it turns out, is the exception. Once it gets close to absolute zero, it melts again.
But what could make that happen? The atoms in glass chilled to near-absolute zero have almost no energy, so they can’t be jiggling fast enough to tear apart from each other. And yet, on paper and in computer simulations, glass returned to a liquid form when brought close enough to absolute zero.
The wild card turned out to be quantum mechanics. Once the atoms of glass became still enough, they stopped acting like particles and instead acted like waves. The wave-like atoms now were able to flow, moving through spaces too small for particles to get through. This motion, and this ability to fit through small spaces, causes ultra-cold glass to melt into a liquid. No word yet if this works on the T-1000.
How to Have a Lucid Dream – Wake up in a Dream – Part I
about 11 months ago - No comments
Lucid dreaming need not be elusive. Some simple techniques can make it possible for almost anyone.
Lucid dreaming
Lucid dreaming can be a very powerful experience for the dreamer. “You can be the absolute master of your dream world,” says MortalMist.com, a website and forum dedicated to lucid dreaming. “The very laws of nature can be bent and broken. No experience is beyond your reach, no feat too difficult or risky. If you can imagine it, you can make it happen.”
Many people report wonderful experiences in the dream worlds they’ve created. For some, though, lucid dreaming remains elusive. But there is good news; becoming skilled at “waking up” in a dream may be easier than it seems. There are several techniques that can be used to enter the world of lucid dreaming.
Lucid dreaming requires three things:
- the ability to recall dreams,
- a technique, known as a reality check, to become aware of dreaming, and
- strategies to remain in the dream.
Tips for Recalling Dreams
Everyone dreams, but not everyone remembers his or her dreams. Sometimes even people who revel in dream recall go through periods where they can’t remember dreams. But that doesn’t mean lucid dreaming is lost to those who have trouble remembering dreams.
Dream recall is a skill that improves with practice. In fact, improved dream recall can happen readily, and all it requires is lying in bed, according to Ryan Dungan Hurd, editor of DreamStudies.org and a member of the International Association for the Study of Dreams.
Hurd suggests that people use the Snooze Method for Dream Recall. The name of the method may seem strange, but most find that it’s a fairly easy way to remember dreams.
He explains that when people wake up, they usually change their body position almost immediately. “This actually dispels the body’s emotional traces of the last dream….And it’s totally over for remembering dreams once we start thinking about the day ahead.”
Hurd believes that memory traces are not just stored in the brain; he says they can be stored virtually anywhere in the body. The lungs, the belly, and the heart are among the largest of these body-cognition centers, and they process memory and emotion. He notes that people can use this same natural capacity of the body to help remember dreams, too.
So, to improve dream recall, remain in position upon waking; avoid moving into a new position. Then, actively attempt to recall the dream. If no images come, one may try focusing on any emotional residue that the dream may have left behind.
Once the dream is remembered, record it in a journal kept near the bed.
Congenital Insensitivity To Pain – People Who Can’t Feel Pain – CIPA
about 1 year ago - No comments
CIPA or congenital insensitivity to pain is one of the rarest diseases in the world. A very rare condition and it is also known as congenital analgia. People diagnosed with this condition have their pain sensors turned off and they can’t feel any pain. The condition is extremely dangerous as these people are prone to danger not knowing the level of pain inflicted.
Congenital Insensitivity To Pain – People Who Can’t Feel Pain
What caused the disorder? It is an unknown condition when the brain that recognizes the pain does not connect to the nerves that sense the pain. This unknown condition only happens to the pain sensors. People with CIPA have their other sensory areas completely checked and normal. Incredibly a rare disease, 35 people in the United States is diagnosed with CIPA. Sadly, people with CIPA has low survival rate and many doesn’t live that long to the age of 25 making the case a difficult case to study.
Pains are relatively a unique sense. It keeps us out of trouble, our body defense against harmful actions and not being able to feel pain is totally dangerous. Children especially will need to know how to sense this pain. We need to know what we should or shouldn’t do when we feel pain and we also know how not to cause pain to ourselves. Pain can help you to avoid danger and what causing this danger.
Anhidrosis, a condition of the body’s inability to sweat is found in people with CIPA. This condition can worsen the issue. With Anhidrosis, people with CIPA are not able to feel extreme temperature. Together with this and the body’s inability to sweat only means that their body is unable to regulate its temperature.
Proper attention should be made to the children with CIPA. They need to be watched more often than the normal children and may need regular checks to the doctor to see whether they are not suffering from anything that they may not be aware of. To make sure that nothing is bleeding or there’s an open cut, they should be constantly checked since they are unable to differentiate this pain from other feelings.
In a case involving CIPA, a little girl who was three years old burnt her skin from a hot oven. The little girl put her hand on the hot oven and smiling with her blood all over the kitchen. The parents who found her were shocked. It is also known that when this little girl began teething, she shredded her own lips too.
Another case in China showed a perfectly healthy 10 year old boy with a body temperature of 43 degrees. In another case in Iraq, a boy who is awake for more than 2 years without sleeping. There are many of other cases of children with CIPA condition.
Congenital insensitivity to pain is very serious. Few people with CIPA do not live to see age 25 because these people can’t feel pain. They may catch simple illness and unknowingly catching few other simple illnesses along the way but was unable to get proper treatments since they can’t feel this pain. Their body too was unable to tell them and that’s why CIPA is the rarest disease in the world with no cure yet.
18 Health Tricks to Teach Your Body – Part I
about 1 year ago - No comments
Cure a Tickling Throat
Doctor Checking the Blood Pressure of a Patient
When you were 9, playing your armpit was a cool trick. Now, as an adult, you can still appreciate a good body-based feat, especially if it serves as a health remedy. Take that tickle in your throat: It’s not worth gagging over. Here’s a better way to scratch your itch: Scratch your ear. “When the nerves in the ear are stimulated, it creates a reflex in the throat that can cause a muscle spasm,” says Scott Schaffer, M.D., president of an ear, nose, and throat specialty center in Gibbsboro, New Jersey. “This spasm relieves the tickle.”
Experience Supersonic Hearing
If you’re stuck chatting up a mumbler at a cocktail party, lean in with your right ear. It’s better than your left at following the rapid rhythms of speech, according to researchers at the UCLA David Geffen School of Medicine. If, on the other hand, you’re trying to identify that song playing softly in the elevator, turn your left ear toward the sound. The left ear is better at picking up music tones.
Overcome Your Most Primal Urge
Need to pee? No bathroom nearby? Fantasize about Jessica Simpson. Thinking about sex preoccupies your brain, so you won’t feel as much discomfort, says Larry Lipshultz, M.D., chief of male reproductive medicine at the Baylor College of Medicine. For best results, try Simpson’s “These Boots Are Made for Walking” video.
Feel No Pain
German researchers have discovered that coughing during an injection can lessen the pain of the needle stick. According to Taras Usichenko, author of a study on the phenomenon, the trick causes a sudden, temporary rise in pressure in the chest and spinal canal, inhibiting the pain-conducting structures of the spinal cord.
Clear Your Stuffed Nose
Forget Sudafed. Here’s an easier, quicker, and cheaper remedy to relieve sinus pressure: Alternate thrusting your tongue against the roof of your mouth, then pressing between your eyebrows with one finger. This causes the vomer bone, which runs through the nasal passages to the mouth, to rock back and forth, says Lisa DeStefano, D.O., an assistant professor at the Michigan State University college of osteopathic medicine. The motion loosens congestion; after 20 seconds, you’ll feel your sinuses start to drain.
Fight Fire Without Water
Worried those wings will repeat on you tonight? Try this preventive remedy: “Sleep on your left side,” says Anthony A. Starpoli, M.D., a New York City gastroenterologist and assistant professor of medicine at New York Medical College. Studies have shown that patients who sleep on their left sides are less likely to suffer from acid reflux. The esophagus and stomach connect at an angle. When you sleep on your right, the stomach is higher than the esophagus, allowing food and stomach acid to slide up your throat. When you’re on your left, the stomach is lower than the esophagus, so gravity’s in your favor.
Trichotillomania
about 1 year ago - No comments
Trichotillomania is hair loss from compulsive pulling or twisting of the hair until it breaks off.
Trichotillomania
Causes
Trichotillomania is a type of compulsive behavior. Its causes are not clearly understood.
It may affect as much as 4% of the population. Women are four times more likely to be affected than men.
Symptoms
Symptoms usually begin before age 17. The hair may come out in round patches or across the scalp. The effect is an uneven appearance. The person may pluck other hairy areas, such as the eyebrows, eyelashes, or body hair.
These symptoms are usually seen in children:
- An uneven appearance to the hair
- Bare patches or all around (diffuse) loss of hair
- Bowel blockage (obstruction) if people eat the hair they pull out
- Constant tugging, pulling, or twisting of hair
- Denying the hair pulling
- Hair regrowth that feels like stubble in the bare spots
- Increasing sense of tension before the hair pulling
- Other self-injury behaviors
- Sense of relief, pleasure, or gratification after the hair pulling
Exams and Tests
People with this disorder often will first seek the help of a doctor who treats skin problems (dermatologist).
A piece of tissue may be removed (biopsy) to rule out other causes, such as a scalp infection, and to explain the hair loss.
Treatment
Experts don’t agree on the use of medication for treatment. However, naltrexone and selective serotonin reuptake inhibitors (SSRIs) have been shown effective in reducing some symptoms. Behavioral therapy and habit reversal may also be effective.
Outlook (Prognosis)
Typically, trichotillomania is limited to younger children who tend to outgrow the behavior. For most, the hair pulling ends within 12 months. Children who start pulling hair early (before age 6) tend to do better than those who start later.
Possible Complications
People can have complications when they eat the pulled-out hair (trichophagia). This can cause a blockage in the intestines or lead to poor nutrition.
Prevention
Early detection is the best form of prevention because it leads to early treatment. Decreasing stress can help, because stress may increase compulsive behavior.
Alternative Names
Trichotillosis; Compulsive hair pulling.
100 Very Cool Facts About The Human Body – Part VIII
about 1 year ago - No comments
Disease and Injury
Most of us will get injured or sick at some point in our lives. Here are some facts on how the human body reacts to the stresses and dangers from the outside world.
unicorn injury
- Monday is the day of the week when the risk of heart attack is greatest. Yet another reason to loathe Mondays! A ten year study in Scotland found that 20% more people die of heart attacks on Mondays than any other day of the week. Researchers theorize that it’s a combination of too much fun over the weekend with the stress of going back to work that causes the increase.
- Humans can make do longer without food than sleep. While you might feel better prepared to stay up all night partying than to give up eating, that feeling will be relatively short lived. Provided there is water, the average human could survive a month to two months without food depending on their body fat and other factors. Sleep deprived people, however, start experiencing radical personality and psychological changes after only a few sleepless days. The longest recorded time anyone has ever gone without sleep is 11 days, at the end of which the experimenter was awake, but stumbled over words, hallucinated and frequently forgot what he was doing.
- A simple, moderately severe sunburn damages the blood vessels extensively. How extensively? Studies have shown that it can take four to fifteen months for them to return to their normal condition. Consider that the next time you’re feeling too lazy to apply sunscreen before heading outside.
- Over 90% of diseases are caused or complicated by stress. That high stress job you have could be doing more than just wearing you down each day. It could also be increasing your chances of having a variety of serious medical conditions like depression, high blood pressure and heart disease.
- A human head remains conscious for about 15 to 20 seconds after it is been decapitated. While it might be gross to think about, the blood in the head may be enough to keep someone alive and conscious for a few seconds after the head has been separated from the body, though reports as to the accuracy of this are widely varying.
Spacetime invisibility cloaks can hide entire events inside temporal voids
about 1 year ago - No comments
Invisibility cloaks are taking baby steps from science fiction to science fact. But there’s an even stranger and more incredible possibility – an invisibility cloak that works in both space and time, shielding whole events from history itself.
ruby
The basic idea is surprisingly simple. We see things because our eyes are able to interpret information from visible light. That light travels at, obviously enough, the speed of light, which means we see things once light has traveled from them to our eyes. Technically speaking, we never see anything the exact instant happens – there’s always a time lag between the object and when we see it.
This is fairly well-known for anyone with an interest in astronomy. The Moon is one light-second away, the Sun a little over eight light-minutes away, the nearest star 4.3 light-years away, the nearest galaxy , and so on. There are time lags on even everyday distances, however impossibly slight. For something a meter away, we see it as it was about 1/300,000,000th of a second ago.
Here’s how you use that information to build a spacetime cloak. All those times are for the speed of light in a vacuum, but light can slow down depending on what material it passes through. Researchers have slowed down light to as little as 38 miles per hour by sending it through a special, super-dense form of matter. And it’s through carefully slowing down and speeding up light that we can create a temporal void.
cloak
Let’s say you’re standing a mile away from an observer. You start slowly decreasing the speed of the light traveling towards the observer so that it’s only traveling at 60 miles per hour, or a mile per minute. Since you’re slowing the light down gradually, the observer won’t be able to perceive the change. Once the light has reached 60 miles per hour, the observer is now seeing you as you were one minute ago. You’ve now created a one minute spacetime corridor. You’ve now got a minute to do whatever you want without the observer having any idea what you’re up to.
Once your minute is up, you switch off the machine slowing down the light, it speeds back up, and the observer now sees you again as you are right now – or at least as you were a nanosecond ago. That minute is a temporally compressed blip that the observer cannot perceive. That a basic version of the idea put forward by researchers at Imperial College London. Here’s their somewhat more technical explanation:
This process is thus utterly distinct from a spatial ‘object’ cloak, which instead achieves concealment by bending light around an object. The STC opens a temporary
corridor through which energy, information and matter can be manipulated or transported undetected. Once the concealed passage has been used, the STC closes by slowing the leading part of the light, whilst speeding up the trailing part, leaving no trace of the cloak, or the concealed events, on the field profile. To a distant observer, any non-emitting object whose presence persisted throughout the lifetime of the STC will have had a finite interval excised from its history. Any object which emits light during STC operation will have that part of its history temporally compressed so that, if not absorbed, it will appear to the observer as if occurring in a single instant.
100 Very Cool Facts About The Human Body – Part VII
about 1 year ago - No comments
Aging and Death
From the very young to the very old, aging is a necessary and unavoidable part of life. Learn about the process with these interesting, if somewhat strange facts.
old couple
- The ashes of a cremated person average about 9 pounds. A big part of what gives the human body weight is the water trapped in our cells. Once cremated, that water and a majority of our tissues are destroyed, leaving little behind.
- Nails and hair do not continue to grow after we die. They do appear longer when we die, however, as the skin dehydrates and pulls back from the nail beds and scalp.
- By the age of 60, most people will have lost about half their taste buds. Perhaps you shouldn’t trust your grandma’s cooking as much as you do. Older individuals tend to lose their ability to taste, and many find that they need much more intense flavoring in order to be able to fully appreciate a dish.
- Your eyes are always the same size from birth but your nose and ears never stop growing. When babies look up at you with those big eyes, they’re the same size that they’ll be carrying around in their bodies for the rest of their lives. Their ears and nose, however, will grow throughout their lives and research has shown that growth peaks in seven year cycles.
- By 60 years of age, 60-percent of men and 40-percent of women will snore. If you’ve ever been kept awake by a snoring loved one you know the sound can be deafening. Normal snores average around 60 decibels, the noise level of normal speech, intense snores can reach more than 80 decibels, the approximate level caused by a jackhammer breaking up concrete.
- A baby’s head is one-quarter of it’s total length, but by age 25 will only be one-eighth of its total length. As it turns out, our adorably oversized baby heads won’t change size as drastically as the rest of our body. The legs and torso will lengthen, but the head won’t get much longer.
100 Very Cool Facts About The Human Body – Part VI
about 1 year ago - No comments
Senses
The primary means by which we interact with the world around us is through our senses. Here are some interesting facts about these five sensory abilities.
Bees
- After eating too much, your hearing is less sharp. If you’re heading to a concert or a musical after a big meal you may be doing yourself a disservice. Try eating a smaller meal if you need to keep your hearing pitch perfect.
- About one third of the human race has 20-20 vision. Glasses and contact wearers are hardly alone in a world where two thirds of the population have less than perfect vision. The amount of people with perfect vision decreases further as they age.
- If saliva cannot dissolve something, you cannot taste it. In order for foods, or anything else, to have a taste, chemicals from the substance must be dissolved by saliva. If you don’t believe it, try drying off your tongue before tasting something.
- Women are born better smellers than men and remain better smellers over life. Studies have shown that women are more able to correctly pinpoint just what a smell is. Women were better able to identify citrus, vanilla, cinnamon and coffee smells. While women are overall better smellers, there is an unfortunate 2% of the population with no sense of smell at all.
- Your nose can remember 50,000 different scents. While a bloodhound’s nose may be a million times more sensitive than a human’s, that doesn’t mean that the human sense of smell is useless. Humans can identify a wide variety of scents and many are strongly tied to memories.
- Even small noises cause the pupils of the eyes to dilate. It is believed that this is why surgeons, watchmakers and others who perform delicate manual operations are so bothered by uninvited noise. The sound causes their pupils to change focus and blur their vision, making it harder to do their job well.
- Everyone has a unique smell, except for identical twins. Newborns are able to recognize the smell of their mothers and many of us can pinpoint the smell of our significant others and those we are close to. Part of that smell is determined by genetics, but it’s also largely do to environment, diet and personal hygiene products that create a unique chemistry for each person.
100 Very Cool Facts About The Human Body – Part V
about 1 year ago - No comments
Sex and Reproduction
As taboo as it may be in some places, sex is an important part of human life as a facet of relationships and the means to reproduce. Here are a few things you might not have known.
Hotmale
- On any given day, sexual intercourse takes place 120 million times on earth. Humans are a quickly proliferating species, and with about 4% of the world’s population having sex on any given day, it’s no wonder that birth rates continue to increase in many places all over the world.
- The largest cell in the human body is the female egg and the smallest is the male sperm. While you can’t see skin cells or muscle cells, the ovum is typically large enough to be seen with the naked eye with a diameter of about a millimeter. The sperm cell, on the other hand, is tiny, consisting of little more than nucleus.
- The three things pregnant women dream most of during their first trimester are frogs, worms and potted plants. Pregnancy hormones can cause mood swings, cravings and many other unexpected changes. Oddly enough, hormones can often affect the types of dreams women have and their vividness. The most common are these three types, but many women also dream of water, giving birth or even have violent or sexually charged dreams.
- Your teeth start growing 6 months before you are born. While few babies are born with teeth in place, the teeth that will eventually push through the gums of young children are formed long before the child even leaves the womb. At 9 to 12 weeks the fetus starts to form the teeth buds that will turn into baby teeth.
- Babies are always born with blue eyes. The color of your eyes depends on the genes you get from your parents, but at birth most babies appear to have blue eyes. The reason behind this is the pigment melanin. The melanin in a newborn’s eyes often needs time after birth to be fully deposited or to be darkened by exposure to ultraviolet light, later revealing the baby’s true eye color.
- Babies are, pound for pound, stronger than an ox. While a baby certainly couldn’t pull a covered wagon at its present size, if the child were the size of an oxen it just might very well be able to. Babies have especially strong and powerful legs for such tiny creatures, so watch out for those kicks.
- One out of every 2,000 newborn infants has a tooth when they are born. Nursing mothers may cringe at this fact. Sometimes the tooth is a regular baby tooth that has already erupted and sometimes it is an extra tooth that will fall out before the other set of choppers comes in.
- A fetus acquires fingerprints at the age of three months. When only a small fraction of the way through its development, a fetus will have already developed one of the most unique human traits: fingerprints. At only 6-13 weeks of development, the whorls of what will be fingerprints have already developed. Oddly enough, those fingerprints will not change throughout the person’s life and will be one of the last things to disappear after death.
- Every human spent about half an hour as a single cell. All life has to begin somewhere, and even the largest humans spent a short part of their lives as a single celled organism when sperm and egg cells first combine. Shortly afterward, the cells begin rapidly dividing and begin forming the components of a tiny embryo.
- Most men have erections every hour to hour and a half during sleep. Most people’s bodies and minds are much more active when they’re sleeping than they think. The combination of blood circulation and testosterone production can cause erections during sleep and they’re often a normal and necessary part of REM sleep.
