A new neurostimulator developed by engineers at the University of California, Berkeley, can listen to and stimulate electric current in the brain at the same time, potentially delivering fine-tuned treatments to patients with diseases like epilepsy and Parkinson's.
The device, named the WAND, works like a "pacemaker for the brain," monitoring the brain's electrical activity and delivering electrical stimulation if it detects something amiss.
These devices can be extremely effective at preventing debilitating tremors or seizures in patients with a variety of neurological conditions. But the electrical signatures that precede a seizure or tremor can be extremely subtle, and the frequency and strength of electrical stimulation required to prevent them is equally touchy. It can take years of small adjustments by doctors before the devices provide optimal treatment.
Belly fat has long been thought to be particularly bad for your heart, but now, a new study adds more evidence to the idea that it may also be bad for your brain. The study shows that people with a higher waist to hip ratio had lower brain volumes, on average, when compared to those with healthy weight. Though the cause of this has not been proven, one hypothesis is that the visceral fat produces inflammatory substances that may play a role in the brain deterioration.
Reflexes are involuntary movements or actions. Some movements are spontaneous and occur as part of the baby's normal activity. Others are responses to certain actions. Healthcare providers check reflexes to determine if the brain and nervous system are working well. Some reflexes occur only in specific periods of development. The following are some of the normal reflexes seen in newborn babies:
This reflex begins when the corner of the baby's mouth is stroked or touched. The baby will turn his or her head and open his or her mouth to follow and root in the direction of the stroking. This helps the baby find the breast or bottle to begin feeding. This reflex lasts about 4 months.
2. Moro reflex
The Moro reflex is often called a startle reflex. That’s because it usually occurs when a baby is startled by a loud sound or movement. In response to the sound, the baby throws back his or her head, extends out his or her arms and legs, cries, then pulls the arms and legs back in. A baby's own cry can startle him or her and trigger this reflex. This reflex lasts until the baby is about 2 months old.
Stroking the palm of a baby's hand causes the baby to close his or her fingers in a grasp. The grasp reflex lasts until the baby is about 5 to 6 months old. A similar reflex in the toes lasts until 9 to 12 months.
This reflex is also called the walking or dance reflex because a baby appears to take steps or dance when held upright with his or her feet touching a solid surface. This reflex lasts about 2 months.
Fun facts about your nervous system:
There are more nerve cells in the human brain than there are stars in the Milky Way.
If we lined up all the neurons in our body it would be around 965 km long.
There are 100 billion neurons in your brain alone.
A newborn baby's brain almost triples in size during the course of its first year.
The left side of human brain controls the right side of the body and the right side of the brain controls the left side of the body.
A new born baby loses about half of their nerve cells before they are born.
There are about 13 500,00 neurons in the human spinal cord.
The nervous system can transmit nerve impulses as fast as 100 meters per second, and in some cases, the speed of transmission is around 180 miles per hour
A man's brain has 6.5 times more grey matter compared to women, but a woman's brain has 10 times more white matter compared to men.
Your nervous system cannot function properly in the absence of potassium and sodium ions,
An overactive immune system isn’t the only system causing the wheezing and coughing that come from an asthma attack. The bundles of nerves from the brain to the lungs might cause this effect as well. Understanding how these nerves work might come in handy in treating certain types of asthma. “It will help target the neurons which could ease the symptoms or prevent attacks” -David Marchal.
Some interesting facts about the nervous system:
1. There are 100 billion neurons in your brain alone.
2. There are more nerve cells in the brain than stars in the Milky Way.
3. A newborn baby's brain almost triples in size during the course of its first year.
4. There are about 13 500,00 neurons in the human spinal cord.
5. The nervous system can transmit nerve impulses as fast as 100 meters per second, and in some cases, the speed of transmission is around 180 miles per hour
6. A man's brain has 6.5 times more grey matter compared to women, but a woman's brain has 10 times more white matter compared to men.
When you witness something that can be threatening, your body’s first reaction is to either fight or flee the scene. This is due to “flight or fight” response that is caused when the sympathetic nervous system is activated by the release of hormones. The sympathetic nervous system triggers the release of adrenaline by stimulating the adrenal glands. The body’s blood pressure, heart rate and breathing rate will all rise due to this. The pupils also dilate to allow more light into the eyes for you to properly observe your surroundings. This process plays a crucial role when humans deal with danger and stress.
According to a study done on 10,000 people in the U.K, being overweight, especially having excess weight in the abdomen may cause shrunken grey matter volume in the brain. The researchers measured BMI (body mass index) and the waist to hip ratio, and found that those with high numbers on both BMI and the waist to hip ratio had the lowest grey matter volume. They also found shrinkage in specific areas of the brain that have to deal with motivation and rewards. Although currently not understood, scientists theorize that inflammation and other vascular factors may play a role in the shrinkage and decrease of grey matter in the brain due to obesity.
Depression isn't because of you, it's your nervous system.
In society, there's often stigmas that revolve around mental health illnesses which can prevent people from seeking treatment. One of the reasons that these stigmas exists is because there are still some who believe people can control their depression or should be able to fix it on their own, however, that's not true. When we learn how the nervous system works, we start to understand that anxiety and depression are caused by dysregulation and not a lack of willpower. When our autonomic nervous system becomes dysregulated, we respond using our “fight, flight, or freeze” reflex, which has dire effects on the body and brain. The dysregulation of the nervous system can be explained with the metaphor of a tiger in the corner of the room. If you have anxiety, it’s as if you are constantly protecting yourself from the metaphorical tiger by bracing your muscles and being hypervigilant. For those with depression, it’s as if you are aware of the tiger, but know there is nothing you can do about it, so you enter into a freeze state. Neither of these responses is conscious; it’s how our bodies react to perceived threats.
There was a study done to see whether mimicking the nervous system will advance artificial intelligence. Robots make decisions based on their programming, unlike humans who use emotions. Humans function completely differently than robots. For example, the digestive system has its own nervous system called the enteric system. This allows digestion to happen unconsciously. If scientists mimic a nervous system that’s controlled unconsciously, they might achieve more advances in AI. A company called Biologic Intelligence is the first company looking at the complexity of a nervous system for AI applications. They are beginning with looking at how the electrical system inside an animals body can be used as a template for creating artificial intelligence.
The nervous system is a complex, sophisticated system that regulates and coordinates body activities. It is made up of two major divisions, including the following:
Central nervous system. This consists of the brain and spinal cord.
Peripheral nervous system. This consists of all other neural elements, including the peripheral nerves and the autonomic nerves
In addition to the brain and spinal cord, principal organs of the nervous system include the following:
Sensory organs of taste
Sensory organs of smell
Sensory receptors located in the skin, joints, muscles, and other parts of the body
Write something about yourself. No need to be fancy, just an overview.