Nathan Copeland controls a robotic arm using electrodes implanted in his brain. Published in the journal Science, the team say their work demonstrates that adding sensation to the technology significantly improves the function of prostheses for quadriplegics, compared with based solely on visual cues. Nathan Copeland, 34, told AFP: “I am the first person in the world to have a device implanted in the sensory cortex that scientists can use to stimulate my brain directly. And then, I felt like I had a real feel in my flesh and blood hand.” In 2004, Copeland was involved in a car accident that left him with a severe spinal cord injury and quadriplegia. He volunteered for scientific research and six years ago he underwent major surgery to implant tiny electrodes in his brain. Two sets of 88 electrodes the width of a human hair are arranged like tiny combs and penetrate deep into the cortex, which controls motor function. According to Associate Professor Rob Gaunt of the Department of Physical Medicine and Rehabilitation at the University of Pittsburgh, co-leader of the study, fewer than 30 people in the world have received such a transplant. What’s unique about Copeland’s case is that an additional set of electrodes is connected to his dorsal cortex, which receives and processes sensations. The idea of ​​sending haptic feedback to the tactile sensory cortex dates back decades, but doing so in a controlled and understandable way by brain circuitry used to be a major challenge. After Copeland underwent surgery to install the electrodes, the team was truly thrilled. Then came the decisive moment, when they tried sending the first tactile signal. “It felt really fuzzy,” Copeland recalls. He asked them to try again to make sure it was real. Before the interface could work with the robotic arm, the scientists had to perform a series of tests on Copeland. First, they needed to learn which electrodes cause what sensation when activated and which fingers are associated with them in order to set up the robotic hand correctly. They also made him watch a video of the robotic arm moving left or right and recorded the electrodes lighting up when he was asked to “think” it was him controlling it. Copeland sat next to a black metal robotic arm and was asked to pick up a series of small objects such as rocks and spheres and place them in a box – when the tactile sensors were turned on or off. He can complete each task in an average of twice as fast when the sensors are activated, and can even perform more complex tasks like picking up a glass and pouring its contents into a glass. another cup. The team wanted to further refine the prosthetics because they didn’t want to just do science experiments in the lab, but wanted to actually make devices that would be useful to people. Copeland has set up his brain-computer interface at home when the Covid-19 pandemic shut down universities and has used his downtime to learn how to draw on a tablet and even play video games. death. He does this by using his mind to send signals directly to the computer, instead of using his arms to press buttons.

When you tie your ponytail close to your scalp, tight buns or braids all cause hair follicles to stretch, weaken the roots and easily cause breakage, even scarring of hair follicles. difficult to regrow or permanently unable to grow. So, tie your hair neatly but just right, not too tight, or you can release your hair for the most natural look. Illustration. Incorrect brushing Wet hair is at its weakest point and is in its most vulnerable phase, brushing your hair or vigorously wiping your scalp with a towel will make your hair fall even more. Before washing your hair, brush your hair briefly to make sure it doesn’t get tangled before washing it. After washing your hair, use a washcloth to soak the hair. When your hair is dry, use a comb to brush it. Hair should be brushed with a wide-toothed comb to minimize the loss of hair, especially when the hair is still wet. Illustration. Dry combing makes it easy to remove tangles without damaging or breaking the hair. Note, whether you brush your hair when it is still wet or dry, you should be gentle, remove every tangle, not brace your hair, causing more hair loss. Scratch your head often Head itching can be caused by a build up of dirt on the scalp that is too thick or from causes such as fungus, inflammation or allergies. Whatever the reason, frequent scratching can damage the hair follicles, making it easier for hair to fall out and thinner. Instead of scratching, try a gentle scalp massage. Illustration. You should learn carefully about the problem you are facing to have a suitable solution such as washing your hair more often, having a healthier diet, supplementing with enough nutrients your body needs. When itchy head, instead of using your fingernails, massage the scalp with your fingertips and use products specifically for hair problems. Wash your hair with hot water Hot water can make your scalp feel comfortable, but inadvertently makes your hair dry, brittle, your scalp also loses the moisture it needs and it takes incessantly oil secretion to balance the moisture in the roots. This causes damage to the roots of the hair that makes the hair more prone to breakage and increases the amount of bacteria on the scalp. Illustration. You can use warm water to wash your hair instead of the water that is too hot. When rinsing hair with conditioner, use cool water to tighten pores and strengthen hair. Improper shampooing Many people have a habit of standing and washing their hair in the shower. This is a convenient position, but prevents the shampoo from being applied evenly, and it can flow down the body. Shampooing when bowing is said to be the best look. You bend over and stroke all your hair backwards. This position makes it easier for dirt to pass away. In addition, when you apply conditioner or hair mask, this position will limit the cream from sticking to the scalp or on the body, the manipulation is also easier. Illustration. Change your hair color regularly Frequent changes in hair color and hairstyle will affect your hair because these chemicals damage your scalp, causing hair loss, hair loss and can cause irritation. To protect your scalp and hair, you should choose a reasonable hair color change time. Use a dryer and hair styling tools Drying hair with high heat, strong winds will help the hair dry quickly. However, it does cause lasting damage to the hair. The same happens when using hair styling machines. High heat will affect your hair, they burn oil and protein in the hair, break down the hair’s cuticle, causing loss and dandruff. Illustration. Limit your use of dryers and hair styling tools to get healthy, smooth hair. To dry your hair, pat it gently with a towel and let it dry naturally for best. Wrapping your hair tightly with a towel also makes your hair more susceptible to damage, split ends. Do not block the sun Sunlight significantly reduces the elasticity and strength of the hair. If the scalp is heated in the sun for too long, the cuticles and hair fibers will be damaged, the scalp is susceptible to drying out from dehydration or constantly secreting oil to protect the epidermis. The brighter your hair, the more susceptible it is to sun damage. Please pay attention to wear a hat, use sun protection products on the street. You can use a hair mask 1-2 times / week to moisturize the scalp. Skip breakfast Breakfast provides calories for the day’s activities. Skipping breakfast not only makes the body tired, the mental state is not good, causes the heart, brain and other internal organs to weaken, but also leads to harmful effects on hormones. substances that cause hair loss, thinning hair. Hair is composed mainly of protein (keratin) and is very easy to break when the body lacks protein. Make sure to get enough protein your body needs each day.

Here are the causes of hair loss and how to fix it Illustration. Use a hair mask Your hair usually loses moisture quickly. Therefore, it is important to keep it hydrated. Using natural hair masks can help you deeply conditioning your scalp and hair to give you healthy hair. You can use a simple hair mask made of banana and honey to condition your hair. Take a ripe banana and grind it into a fine paste. Add a few drops of honey and mix all ingredients well. Use this mixture to incubate your hair for about 1 hour. Rinse well with normal water. Wash your hair properly Choose the right shampoo for your hair. Before washing your hair, brush your hair to remove any tangles. Wet your hair, take a small amount of shampoo on the palm of your hand and rub it well. Next, apply it on hair and scalp and gently massage in circular motions. Do not brush wet hair There is a major misconception that brushing wet hair will help promote hair growth. In fact, brushing your hair when it’s wet actually leads to hair loss. If you need to brush wet hair, be sure to use a wide tooth comb or fingertips to brush your hair. Yogurt Yogurt acts as a natural hair conditioner, it contains vitamin B5 and protein that are perfect for nourishing hair. In addition, honey contains many antibacterial agents that also help protect the hair from damage from external influences. Yogurt also contains live microorganisms that help your hair grow quickly. Resources: Unsweetened yogurt: 2 tablespoons Honey: 1 scoop Lemon juice: 2 teaspoons Mix well the yogurt with honey and lemon juice. After washing your hair, apply this mixture to your hair and scalp, gently massage and incubate for 30 minutes then rinse with clean water. Normally, you can use this mixture on your scalp about once a week, but if you have dry hair, you can absolutely use them twice a week.

Don’t wash too often Outdoor activities make hair sticky quickly, making experienceers often have to wash their hair. Too much frequency causes hair to lose its natural moisture. In the case of hair without natural oils, it becomes coarse, dull and difficult to style. Therefore, you should wash your hair every 2-3 days, helping your hair to be kept moisturized by natural oils. You should also avoid washing your hair with hot water. The high temperature dries out the hair due to the loss of oil as a protective role. Instead, use lukewarm water, which allows for an effective, non-irritating cleanser of the hair and scalp. With the last rinse, cold water works to close the cuticles, making the hair shine. You shouldn’t wash your hair too often. Photo: Global Village Space. Use conditioner and vitamins Conditioner makes hair soft, easy to style. It also strengthens the hair, avoiding split ends. You should only apply the tail part and not on the scalp, making it difficult for the scalp to breathe and causing hair loss. Besides, vitamins have a nourishing effect on hair roots. The way the vitamin works is to stimulate hair growth and improve blood circulation to all parts of the scalp. If you want healthy hair, take the right vitamins. You also need to add protein (eggs, fish, meat and nuts) and vitamins A, B … for hair in foods such as carrots, pumpkins, salmon, avocados … Conditioners and vitamins provide essential nutrients for the hair. Photo: ELLE. Regularly trim the ends of your hair Dealing with split ends is the hardest part of any hair care routine. Before split ends, the ends of the hair can become dry and brittle, look lifeless, and make styling more difficult. This is an early sign to help you recognize when to trim. If you want healthy hair, regular trimming is essential. This encourages hair growth by removing damaged, broken, or split ends. According to experts, the interval between pruning is 3-4 months. Trimming the ends of your hair helps remove damaged parts. Photo: Groupon. Pay attention to how you brush your hair When combing your hair, there are some precautions that need to be taken to help maintain the health of your hair. You should avoid brushing immediately after washing or while your hair is still wet. Hairs tend to swell when wet, making hair more fragile and 3 times more likely to break. Most combs have teeth close together. They cling to and pulling on the brittle hairs. Repeated brushing can cause hairs to break. If you must brush your hair when it is wet, use a finger or a wide-toothed comb. For thinning hair, you should use a paddle brush that stimulates blood circulation under the scalp and has good debugging ability. Meanwhile, the wide tooth comb is suitable for people with curly hair. In addition, you should limit tight hair, obstructing the circulation of nutrients to each hair. You should choose a comb that matches your hairstyle. Photo: Today Show. Limit thermal effects Using a dryer regularly makes hair dry and brittle. The dryer removes surface moisture as well as water from the hair. Use a towel to absorb the water and let it air dry. In case of use, you should choose low temperature to minimize damage. One of the most common dangers of straightening or perming is severe dryness of the entire strand of hair. These tools cause the hair layers to crack, break, and lose natural moisture. Dry straightening causes cracking along the edge of the cuticles. Meanwhile, wet hair causes moisture to escape into small steam bursts, causing the epidermis to dislocate. Both types of damage can lead to fracture and split ends. The sun and pollution can damage and dry hair, split ends or break. When outdoors, you need to use a hat or tie it neatly to limit the amount of hair exposed to direct sunlight. You should limit your use of a dryer, iron, or curling iron. Photo: Sunday Guardian. Recipes of skin and hair care before bed Sleep skin care to promote regeneration, giving a radiant look in the morning.

Doctor Nguyen Van Ha – Head of Department of Obstetrics and Gynecology Thu Cuc International Hospital performed the operation for Vui pregnant woman

Doctors at Thu Cuc International Hospital have just performed successful surgery for pregnant women with 3rd cesarean section, horizontal position, central striker vegetables with heavy-duty toothpicks.

The pregnant woman, Nguyen Thi Vui (27 years old – Hung Yen), was hospitalized with a 37-week-4-day pregnancy due to being clinging to the lower section by the central striker, covering the cervix with toothpicks.

Doctor Nguyen Van Ha, Head of Obstetrics and Gynecology Department of Thu Cuc International Hospital, said that the striker vegetables with combs are the most serious condition of the forwards, when the placenta attaches to the uterine muscle and invades. through the uterine muscular layer, even clinging to neighboring organs in the abdomen.

Not only that, the woman Nguyen Thi Vui had a history of 2 cesarean sections, so the intestines and connective membranes were partially attached to the old incision, making it more difficult to remove and remove adhesions to get pregnant. The risk of rupture of the uterus during major surgery, which can be dangerous to the life of both mother and baby.

Commenting that this is a very complicated case, the surgical team of Thu Cuc International Hospital has prepared very carefully.

In a brain weight surgery that lasted for many hours, after removing adhesion, the surgical team discovered that each other had ingested teeth and combs that were deeply attached to the uterine muscular layer. In this case, the placenta cannot be removed, if the pregnant woman is deliberately stripped, she will suffer severe bleeding, unable to stop, multi-organ failure and lead to death on the operating table.

Therefore, after the birth of a healthy baby boy weighing 4.2 kg (including a bandana) was born, the team consulted and decided to anesthetize and cut the uterus for pregnant women to stop bleeding.

With the efforts of the team, the long-term surgery has been successful, the baby has good reflexes, the pregnant woman Vui overcame the critical crisis.

Having been shown by the doctors to review the series of superficial photos that the crew took to donate, the woman Cheerfully shared: “With my family these will be extremely memorable memories. Later when my child grows up, I will let him look back at these films and pictures to let him know the day he was born, how hard and hard he and the doctors have been.