Saturday, August 13, 2022

Does The Brain Control Everything

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Willpower: Mind Over Matter

“Does the brain control you, or are you controlling the brain?” (The Ricky Gervais Show)

We do have the ability to consciously and deliberately control our behaviors albeit for a short period. Known as willpower, it does not work because once the conscious mind/ego gets fatigued because the bioenergy field has been compromised the automatic default programming will take over.

Havent you seen people try to stop bad habits using willpower, often achieving disappointing results?

New Research Suggests That Our Emotions As Much As Our Brains Are Key In Mediating How We Perceive And Interact With The World Tell Us About Lauri Nummenmaas Study

Yes! People have at various times in history been sensitized to the ways the body and brain coordinate emotions. A fascinating study published a few years ago asked participants to map, on pictures of their own body, where they feel sensations as they experience different emotions. The investigators looked at something like 15 variegated emotions and found different bodily maps for each of those things. The first group of participants was Finnish. To test for cultural biases, they looked at a second group, I think Japanese, and found similar responses.

Probably the most famous person who has advocated the view that emotions are key to learning or behavior is Daniel Kahneman. His studies showed that theres this apparently rapid, irrational, shoot-from-the-hip way to make decisions, which is important in the behavioral side of economics. In our field in neuroscience, Antonio Damasio has argued for many years that theres a loop between the body and the brain. This involves bodily signatures that get tied to different contexts in our environment, and steer us towards different behavioral outcomes. This is one way in which the body is cognitively involved in our actions, in a way many people wouldnt believe when confronted with the more mystical views of the brain as a self-contained machine.

How Much Does A Human Brain Weigh

The human brain weighs about 3 lbs. and makes up about 2% of a human’s body weight. On average, male brains are about 10% larger than female brains, according to Northwestern Medicine in Illinois. The average male has a brain volume of nearly 78 cubic inches , while the average female brain has a volume of 69 cubic inches . The cerebrum, which is the main part of the brain located in the front area of the skull, makes up 85% of the brain’s weight.

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You Conclude The Book With The Words The Brain Is A Biotic Organ Embedded In A Continuum Of Natural Causes And Connections That Together Contribute To Our Biological Minds Bring It Home For Us Alan Explain Why It Is So Important To Understand That We Are Not Only Our Brains

My overarching theme is against narrow thinking. If we want to solve our problems, we shouldnt reduce them to problems of the brain. We need to keep a broad view, which recognizes how the brain is connected both to the body and to the environment and look for solutions wherever they happen to lie. Explaining human behavior in terms of brain function alone stems from a kind of mystical view of the brain and keeps us from advancing in a way that science can encourage us.

This interview was edited for length and clarity.

Simon Worrall curates Book Talk. Follow him on or at simonworrallauthor.com.

Structure Of The Spinal Cord

our brain by Andrea Cate

The nerves of the spinal cord are encased in a protective skeletal structurecalled the vertebral column. The vertebral column is made up ofbones called vertebrae. The rigidity of the vertebral columnallows us to stand upright, and it protects our spinal cord from harm. However,the vertebral column also remains somewhat flexible, allowing us a wide range ofmotion. The vertebrae protecting the spinal cord are composed of much thickerbone than the skull, the bony plates that protect the brain. This suggests howimportant the spinal cord is to the human body any system under such heavyprotective armor must be important to our existence.

The structure of the spinal cord is directly related to its function as aconveyor of information. Information, in the form of nerve impulses, reaches thespinal cord through sensory neurons and exits the spinal cord through motorneurons. Information enters and departs from the spinal cord throughspinal nerves.

Spinal nerves are known as “mixed” nerves because they contain the axons of bothsensory and motor neurons. Shortly before reaching the spinal cord, the sensoryand motor axons are segregated from one another .

The patellar reflex is mediated by the spinal cord.

The spinal cord relays information in more complex pathways as well. Some reflexactions require the involvement of multiple spinal interneurons before a motoroutput can be generated.

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Injuries To The Nervous System

Our nervous system is especially sensitive to damage by injury. Both brain andspinal cord injuries have the potential to cause severe and life-changingdisabilities. However, the type of disability sustained depends greatly on theregion of trauma.

The spinal cord is responsible for information transfer between the brain and thebody. It follows that injuries to the spinal cord disrupt information transfer.The position of trauma to the spine largely determines the effect of a spinalcord injury on the body. For instance, injuries to the lower half of the spinecan lead to paraplegia , while injuries closerto the skull may lead to quadriplegia .Leading causes of spinal cord injuries are motor vehicle accidents, violence,and falls. Exciting new research provides hope of someday restoring function toparalyzed individuals and improving their quality of life.

Traumatic brain injury refersto damage resulting from trauma to the brain. TBI, like spinal cord injuries,may result in impaired physical function. However, the brain not only controlsour sensory and motor functions, it is also our center of conscious thought.Therefore, injuries to the brain can affect our cognitive abilities or disturbbehavioral and emotional functioning. In addition, brain trauma has thepotential to alter personality and, thus, that elusive part of ourselves weoften consider unchangeable: our sense of self.

A helmet can greatly reduce one’s chances of sports-related headtrauma.

What Part Of The Brain Controls Happiness

Happiness refers to an overall state of well-being or satisfaction. When you feel happy, you generally have positive thoughts and feelings.

Imaging studies suggest that the happiness response originates partly in the limbic cortex. Another area called the precuneus also plays a role. The precuneus is involved in retrieving memories, maintaining your sense of self, and focusing your attention as you move about your environment.

A 2015 study found that people with larger gray matter volume in their right precuneus reported being happier. Experts think the precuneus processes certain information and converts it into feelings of happiness. For example, imagine youve spent a wonderful night out with someone you care about. Going forward, when you recall this experience and others like it, you may experience a feeling of happiness.

It may sound strange, but the beginnings of romantic love are associated with the stress response triggered by your hypothalamus. It makes more sense when you think about the nervous excitement or anxiety you feel while falling for someone.

As these feelings grow, the hypothalamus triggers release of other hormones, such as dopamine, oxytocin, and vasopressin.

Dopamine is associated with your bodys reward system. This helps make love a desirable feeling.

Vasopressin is similarly produced in your hypothalamus and released by your pituitary gland. Its also involved in social bonding with a partner.

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The Geography Of Thought

Each cerebral hemisphere can be divided into sections, or lobes, each of which specializes in different functions. To understand each lobe and its specialty we will take a tour of the cerebral hemispheres, starting with the two frontal lobes , which lie directly behind the forehead. When you plan a schedule, imagine the future, or use reasoned arguments, these two lobes do much of the work. One of the ways the frontal lobes seem to do these things is by acting as short-term storage sites, allowing one idea to be kept in mind while other ideas are considered. In the rearmost portion of each frontal lobe is a motor area , which helps control voluntary movement. A nearby place on the left frontal lobe called Brocas area allows thoughts to be transformed into words.

When you enjoy a good mealthe taste, aroma, and texture of the foodtwo sections behind the frontal lobes called the parietal lobes are at work. The forward parts of these lobes, just behind the motor areas, are the primary sensory areas . These areas receive information about temperature, taste, touch, and movement from the rest of the body. Reading and arithmetic are also functions in the repertoire of each parietal lobe.

As you look at the words and pictures on this page, two areas at the back of the brain are at work. These lobes, called the occipital lobes , process images from the eyes and link that information with images stored in memory. Damage to the occipital lobes can cause blindness.

How The Spinal Cord And Internal Organs Work Together

What are the different parts of the brain and what do they do? | Cancer Research UK

In addition to the control of voluntary movement, the central nervous system contains the sympathetic and parasympathetic pathways that control the “fight or flight” response to danger and regulation of bodily functions. These include hormone release, movement of food through the stomach and intestines, and the sensations from and muscular control to all internal organs.

This diagram illustrates these pathways and the level of the spinal cord projecting to each organ.

Also Check: Causes Of Brain Bleed In Elderly

Your Brain Is A Prediction Organ

Predictions transform flashes of light into the objects you see. They turn changes in air pressure into recognizable sounds, and traces of chemicals into smells and tastes. Predictions let you read the squiggles on this page and understand them as letters and words and ideas. Theyre also the reason why it feels unsatisfying when a sentence is missing its final.

In a very real sense, predictions are just your brain having a conversation with itself. A bunch of neurons make their best guess about what will happen in the immediate future, based on whatever combination of past and present that your brain is currently conjuring. Those neurons then announce that guess to neurons in other brain areas, changing their firing. Meanwhile, sense data from the world and your body injects itself into the conversation, confirming the prediction that youll experience as your reality.

In actuality, your brains predictive process is not quite so linear. Usually your brain has several ways to deal with a given situation, and it creates a flurry of predictions and estimates probabilities for each one. Is that rustling sound in the forest due to the wind, an animal, an enemy fighter, or a shepherd? Is that long, brown shape a branch, a staff, or a rifle? Ultimately, in each moment, some prediction is the winner. Often, its the prediction that best matches the incoming sense data, but not always. Either way, the winning prediction becomes your action and your sensory experience.

Raymond Tallis Former Professor Of Geriatric Medicine At Manchester University And Author

Yes, of course, everything about us, from the simplest sensation to the most elaborately constructed sense of self, requires a brain in some kind of working order. Remove your brain and bang goes your IQ. It does not follow that our brains are pretty well the whole story of us, nor that the best way to understand ourselves is to stare at “the neural substrate of which we are composed”.

This is because we are not stand-alone brains. We are part of community of minds, a human world, that is remote in many respects from what can be observed in brains. Even if that community ultimately originated from brains, this was the work of trillions of brains over hundreds of thousands of years: individual, present-day brains are merely the entrance ticket to the drama of social life, not the drama itself. Trying to understand the community of minds in which we participate by imaging neural tissue is like trying to hear the whispering of woods by applying a stethoscope to an acorn.

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How The Spinal Cord And Muscles Work Together

The spinal cord is divided into five sections: the cervical, thoracic, lumbar, sacral, and coccygeal regions. The level of injury determines the extent of paralysis and/or loss of sensation. No two injuries are alike.

This diagram illustrates the connections between the major skeletal muscle groups and each level of the spinal cord. A similar organization exists for the spinal control of the internal organs.

Where Do Emotions Come From

How does traveling affect our brain?

The limbic system is a group of interconnected structures located deep within the brain. Its the part of the brain thats responsible for behavioral and emotional responses.

Scientists havent reached an agreement about the full list of structures that make up the limbic system, but the following structures are generally accepted as part of the group:

  • Hypothalamus. In addition to controlling emotional responses, the hypothalamus is also involved in sexual responses, hormone release, and regulating body temperature.
  • Hippocampus. The hippocampus helps preserve and retrieve memories. It also plays a role in how you understand the spatial dimensions of your environment.
  • Amygdala. The amygdala helps coordinate responses to things in your environment, especially those that trigger an emotional response. This structure plays an important role in fear and anger.
  • Limbic cortex. This part contains two structures, the cingulate gyrus and the parahippocampal gyrus. Together, they impact mood, motivation, and judgement.

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How Does Your Brain Control Your Body

Human Machine Try our other video playercontact supportVideo trouble?

TRY THIS OUT! Look below for tips. Then go to the next slide.

  • Keep both eyes open with one eye looking through the tube and the other eye looking at your hand.
  • Keep your hand right against the tube.
  • Try different distances between your hand and your eye.

Why did it look like there was a hole in your hand? Any ideas?

Hint…

Try the experiment again. This time, find out what each eye sees by closing each eye one at a time .

QUICK EXPERIMENT Teacher: choose a volunteer to quickly read these words out loud to the class.

QUICK EXPERIMENT Teacher: have the same volunteer say the COLOR of each word out loud. What do you notice?

QUICK EXPERIMENT Now everyone try! Get into partners. Listen as your partner reads the words out loud. Then switch jobs.

QUICK EXPERIMENT Now listen as your partner says the COLOR of each word. Make sure they get them all right! Then switch jobs.

Which task was harder–reading the words, or saying the colors?

Why do you think that one was so hard to do?

How Many Brain Cells Does A Human Have

The human brain contains about 86 billion nerve cells called “gray matter,” according to a 2012 study published in the Proceedings of the National Academy of Sciences. The brain also has about the same number of non-neuronal cells, such as the oligodendrocytes that insulate neuronal axons with a myelin sheath. This gives axons a white appearance, and so these axons are called the brain’s “white matter.”

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What Conditions And Disorders Affect The Nervous System

Thousands of disorders and conditions can affect your nerves. An injured nerve has trouble sending a message. Sometimes its so damaged that it cant send or receive a message at all. Nerve injury can cause numbness, a pins-and-needles feeling or pain. It may be difficult or impossible for you to move the area thats injured.

Nerve damage can happen in several ways. Some of the most common causes of nerve damage include:

Blood Supply To The Brain

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Two sets of blood vessels supply blood and oxygen to the brain: the vertebral arteries and the carotid arteries.

The external carotid arteries extend up the sides of your neck, and are where you can feel your pulse when you touch the area with your fingertips. The internal carotid arteries branch into the skull and circulate blood to the front part of the brain.

The vertebral arteries follow the spinal column into the skull, where they join together at the brainstem and form the basilar artery, which supplies blood to the rear portions of the brain.

The circle of Willis, a loop of blood vessels near the bottom of the brain that connects major arteries, circulates blood from the front of the brain to the back and helps the arterial systems communicate with one another.

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Be Good To Your Brain

So what can you do for your brain? Plenty.

  • Eat healthy foods. They contain vitamins and minerals that are important for the nervous system.
  • Get a lot of playtime .
  • Wear a helmet when you ride your bike or play other sports that require head protection.
  • Don’t drink alcohol, take drugs, or use tobacco.
  • Use your brain by doing challenging activities, such as puzzles, reading, playing music, making art, or anything else that gives your brain a workout!

How Does The Brain Control Movement

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Answer by Fabian van den Berg, Neuroscientist and Psychologist, on Quora:

How does brain control the precision of movement of our body parts? This might get a bit more complicated than you expected, so hold on. Your brain is rather complicated with many different parts and even simplifying it gets confusing. This is going to be a long one since you asked for the brain to movement mechanism .

Ill try to find common ground making it both understandable and accurate. This is about the voluntary control the brain has on muscles, movements like reflexes are excluded.

Initiating a Movement

The first thing we need is to know how movement is initiated. This isnt as easy as sending a message from the brain to the muscle to make it move. Messages originate from the cortex, the outer layer of the brain. These need to go to the muscles, but they make a little stop first. If every message was sent to your muscles you wouldnt be able to function. This stop happens at the Basal Ganglia. This is a complicated system that selects which instructions will be executed and which are inhibited. The reason for a movement can be many things, the specific goal is not important right now.

Important areas in the basal ganglia are the ones below, Ill hold off on too much detail and just give general descriptions. There are more structures that may or may not be part of the basal ganglia, but lets stick to these.

Direct Pathway

Indirect Pathway

Modulation Of The Pathways

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