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Brain

The center of our nervous system and daily thoughts, the brain is a complex, magnificent organ. Ask questions about parts of the brain and their functions here.

2,537 Questions

What are the positives of having two brains?

Some good things about having two brains:

  • You can concentrate on doing 2 things at the same time.
  • You can donate 1 for someone in need.
  • If one of the brains gets damaged, you still have another one.
  • You could be twice as smart, depending on whether you can get the brains to work together.
  • Each brain could work with one ear, so you could concentrate on two conversations at the same time. (And talk to both of them too. Wow that would be a total mess. imagine each person talking to more than 1 person at the same moment!)
  • You could sleep with one and let the other finish your homework at the same time.
  • You could have great conversations with yourself.
  • Someone would always understand your perspective.

What can a brain do a computer can not do?

Through years people have compared the brain to different inventions. In the past, the brain has been said to be like a water clock and a telephone. These days, the favorite invention that the brain is compared to is a computer. Some people use this comparison to say that the computer is better than the brain; some people say that the comparison shows that the brain is better than the computer. Perhaps, it is best to say that the brain is better at doing some jobs and the computer is better at doing other jobs.

Both use electrical signals to send messages the computer uses wires to carry messages and the Brain uses motor neurons. Both can do math and other logical tasks. The computer is faster at doing logical things and computations. However, the brain is better at interpreting the outside world and coming up with new ideas. Both need energy, the brain needs nutrients like oxygen and sugar for power; the computer needs electricity to keep working. Both can be damaged It is easier to fix a computer but there are no new or used parts for the brain Both a computer and a brain can get "sick" - a computer can get a virus and there are many diseases that affect the brain. The brain has built-in backup systems in some cases. If one pathway in the brain is damaged, there is often another pathway that will take over this function of the damaged pathway.

What is the difference between a microprocessor and human brain?

Both a human brain and a CPU perform computations.

A CPU is basically a serial device (a Von Neumann machine). Its computation steps are discrete. Its operations are chosen from a small set. It does some things, like arithmetic, extremely well. It never gets tired. It uses lots of energy. It interfaces with external devices (memory, ALU, Input and Output).

A human brain is a parallel interconnected device. Its computation steps are continuous. It has a large set of operations. It does some things, like face recognition, extremely well. It often gets tired. It is much more efficient energetically than a CPU. It interfaces with external devices (eyes, ears, nose, mouth, skin).

This is not even scratching the surface - Go read, say, "Goedel, Escher, Bach" in order to get a feel for how large this question is.

Why are women braver then men?

women tend to rely more on emotions. For decision making, while men think logically.

What does the brain?

The brain controls the human body.

I don't know if the answer above is supposed to be sarcastic, or just someone who doesn't know and wanted to add something anyway. That is an incredibly useless answer.

In part, the brain controls movement of all body parts, temperature, heart beat, interprets feeling and pain, breathing, when you sleep it regulates breathing and controls the heart, and does much more, but since I'm not a doctor, that is about all I know.

Does the brain control hunger?

The hypothalamus influences food intake, weight regulation, fluid intake and balance, thirst, body heat, and the sleepcycle.

Is reflex action and reflex arcs are same?

Reflexes are uncontrollable movements that happen almost instantly in response to a stimuli. A reflex arc, a neuronal circuit that controls reflexes, is where reflex activities takes place.

What is the cerebellums function?

The cerebellum is the motor movements center of the brain, governing posture, coordination, balance, speech, etc.

Why is the brain convoluted in appearance?

It's wrinkled convoluted appearance is due to a growth spurt during the fourth and fifth months of embryonic development, when the gray matter of the cortex is expanding greatly as it's cells grow in size. The supporting white matter, meanwhile, grows less rapidly; As a result the brain takes on the dense folds and fissures characteristic of an object with great surface area crowded into a small space. ( you can refer to http://books.nap.edu/openbook.php?record_id=1785&page=25 for more info :))

How does hunger affect your brain?

no i didnt eat breakfast my brain is fikdjfn u gaiffgihg iufgdfg ... never mind no its a joke you do get affected by not eating calories can alert your neurological system

Is brain carn married?

No but he does have a child. Had a kid by a girl in VA.

Why doesn't the brain rest?

It depends on what you mean by "rest." The brain always has different levels of activity; some mental processes may use many areas of the brain while at other times the brain may be not as active. However, the brain is never completely inactive - if it is, then the organism is no longer living. Every bodily function is a result of the brain's work, and even when sleeping, the brain might be very active.

What is in-homogeneously enhancing mass of the brain?

These are imaging terms that radiologists use to describe a picture.

Inhomogeneous means that the whole mass does not look the same; the best I can describe is that it looks speckled. For example, a cyst that is filled with fluid will be homogeneous. Every part of what's inside the cyst will look identical, because it's just fluid in there. If the mass is made of different parts, of different densities, then it will appear inhomogenous, or heterogenous, on imaging.

Enhancing means that the mass brightens up with contrast, meaning that there is a lot of blood vessels feeding the mass. (this can sometimes be seen with cancer)

What part of the brain effects your reaction time?

The part of the brain that connects to the spinal cord. The brain stem controls functions basic to the survival of all animals, such as heart sensory information from the body including calculating location and speed of objects.

Is it true a absence seizure is a brief disturbance in brain function in which there is loss of awareness?

Yes. That is exactly what an absence seizure is. You do not remember it, either. If it happens when a person is walking they can fall.

What is pruning of the brain?

Pruning is the process of eliminating unused synapses in the brain to help it to function more efficiently. Synaptic pruning happens to a great degree in newborns and also in adolescents.

What is the main cause of serotonin deficiency?

Serotonin is a neurotransmitter (brain chemical) responsible for feelings of well being and happiness. Serotonin is found in the central nervous system, where it regulates mood, appetite and sleep, and in the gut, where it regulates intestinal movements.

Symptoms of serotonin deficiency include depression, anxiety, irritability, perfectionism, low self esteem, repetitive thoughts and insomnia. Depression that's worse in Winter is due to serotonin deficiency.

Here is a <a href=http://www.gethelpfordepression.info/Tests/SerotoninTest.aspx target="_blank">Serotonin Deficiency Test</a>

How does microwave radiation affect your brain?

microwaves cook your brain if you get close to them because they cause bad damage, you should not stand near them while running

How does Prozac work in the brain?

What action does Cymbalta perform on the brain, physiologically speaking.

How would you like to work against brain drain?

well i am favour of emigration of talented stuff because every one wants to be best utilized as i actually needed sum point for a debate

How does blood reach the human brain?

The blood reaches the brain because of heart pumping. the heart is capable of supplying blood in all "1G" conditions to all parts depending upon requirement.

How do you regain memory thoughts from stroke?

Do your best. Just keep trying to exercise your memory. You will probably have to relearn a lot of the stuff. Mainly, you just give it time. Just be patient with yourself.