Brain Definition and 723 Threads

Deep brain stimulation involves electrodes stimulating the middle of the brain with pulses generated by a battery pack surgically placed like a "pace maker" in the patient's chest. The results for Parkinson's sufferers has been tremendous where 71 percent of patients are better off (to the...

My brother in law received this shirt from the girls in his office. 1772+14 (a drawing of him) 111 141(a backwards 5) I've attached a photo of the shirt. We can't figure it out. Any help would be greatly appreciated. I think he wants to impress the girls in the office...

Here is a Brain Teaser sopsed to me by a friend... How can you make six sixes (666666) equal 67?

The brain and "dark energy"? Hello, hopefully I have this question in the right category... I was just reading an article about the brain and "dark energy". It was talking about how there's apparently a connection to the human brain and this so-called "dark energy" that makes up about 70% of...

how can brain waves have a frequency. frequency is the amount of cycles per second. I'm guessing that this is the time it takes for brain waves to "refresh" I don't understand what it exactly means. The reason I'm asking is that when awake brainwaves are at a higher frequency than when sleeping.

Scientists find 2,000-year-old brain in Britain http://news.yahoo.com/s/ap/20081212/ap_on_re_eu/eu_britain_ancient_brain A lot of what happened 2000 years ago is puzzling. Pretty cool to have something that old on which to perform experiments and diagnostics. :-p

In a giraffe with its head 2m above its heart , and its heart 2m above its feet, the hydrostatic gauge pressure in the blood at its heart is 250 torr . Assume that the giraffe stands upright and the blood density is 1.06 * 1000kg/cubic metre.In torr find the (gauge) blood pressure at the brain.

a little brain teaser..:)) hi ...i'm having a hard time figuring out this one. see attachment pic. a water coluumn, square based tube ( 1 x 1 meters ) - height 10 meters. what will be the amount for the red weight at one side of the see-saw in order to push a styrofoam cube sized( 1x1x1meters=1...

Having a massive brain fart... SIMPLE "molarity -> molality" conversion... This isn't even a homework question per se, I'm just trying to understand how the question converted the molarity to the molality value, via the density given. I just got a different value of molality when trying to...

The first brains came about in the precambrian or at the border with the cambrian around 560 million years ago when the first multi-celluar organisms emerged. It has always struck me how/why organisms developed brains. The brain must have emerged together with eyesight, since eyesight would be...

I use to box in the amateurs (my last fight was April 5th). I stopped boxing due to losing motivation, getting bored, etc, but I've missed it a lot over the past few months and am thinking of getting back into it. I don't plan to go pro or anything. Also, I will be starting university for math...

I have very limited knowledge of how brains work, and I am being highly speculative, but from what little I know (correct me where I'm wrong) brains are a sort of massive interconnected network of signal receiving/transmitting units. It seems that the "paths" of logic would be crossed - that is...

I have my appointment at the big city hospital tomorrow, first they are going to look see if i have a brain. If i have they are going to try to make it go wrong, i doubt that they can make a few AND and OR gates go wrong some how, but i guess you have to let them play.

Hi everyone! I graduated with a major in theoretical physics (mathematical aspects of quantum mechanics) and I wonder if there's some sort of "theoretical human brain physics" research field, and where in the world would be possible to pursue a phd degree in that field. Also, any...

Has anyone heard of this program by Merzenich? http://www.positscience.com/science/global_science_team/michael_merzenich.php It is supposed to be the " authentic " brain fitness program , his tests are really intriguing - one is located at the bottom right hand corner of the above website.

I guess all you guys have over active brains, but how do you switch them it off?

http://news.google.com/news/url?sa=t&ct=us/8-2-0&fp=48c5a9565c6cb9e1&ei=vsfFSOvKLqSeygStsrzjAw&url=http%3A//news.bbc.co.uk/1/hi/health/7595423.stm&cid=1243987486&npp=POP&usg=AFQjCNER-ePiBMSgAohB53BVh3DBSLlXug Don't you love how titles in the press are COMPLETELY misleading...

Hi, my book says that in the brain and skeletal muscle cells, it only yields a total of 36 ATP because NADH + H+ cannot enters the brain and skeletal muscle cells' mitochondria. But why FADH2 can is not stated. Can someone tell me why? Also, since NADH + H+ is formed inside the mitochondria...

Hey, I just had a quick question. If I was wasn't given the proper nutrition when I was grown up like most people (I'm 19 now), does that mean that if I was given the proper nutrition that I'd be smarter than I am right now? Would this lack of nutrition cause make brain to develop more slowly...

I have a few emotion questions and how it effect the brain I'm know little of physics or medicine I'm doing research on affirmations. John does positive affirmations john reads a self help book and visualises and repeats; I'm rich and successful many times. He does this for 30...

Test your brain's age here: http://flashfabrica.com/f_learning/brain/brain.html" Apparently, mine is 20...much older than most PF'er brains I am sure. I used the Google toolbar to translate the instructions:

I'm doing some problems for physics at the end of one the chapters and I get to a question that asks "At what temperature does Fahrenheit and Celsius have the same numerical value?" Now the answer is -40, but I'm not sure how this answer was established. Between class, lab and study time...

Good afternoon PF, I have been a lurker of this forum for over a year and it is now my time to seek academic advice. I am a university student who has recently finished first year. I have taken honors calculus, physics, chemistry, biology, and sociology and obtained very good standing in...

Why is the brain bigger than a walnut?

what would happen? i read that we only use 10%, so I figured we could do some crazy sh!t if we could use everything. actually, why can't we use our brain fully in the first place?

In one of our laboratory's coffee breaks, a debate arose but no one was able to give concrete answers. The main question is the following: Which brain mechanisms makes one more able to perform complex reasoning than others? And I mean time and no time related reasoning... Or, maybe more...

What would it mean to "transfer data directly from brain to brain"? We can assume that "data" in the brain amounts to some spatial-temporal pattern of activation across many neurons. This is a very reasonable assumption to make in light of what we know about neuroscience. There's no way to...

I just heard a scientist say that when frozen, frogs have NO brain activity, but that they can still be revived. Is this true? I knew that frogs could be frozen and revived, but I had never heard the claim about brain activity. If this is true, then when is a frog brain dead, and what is the...

Brain and skull Do you have a 50% chance of dying when your skull is opened for brain surgery due to intracranial pressure? How much can you decrease your odds of dying from that? And how much of the brain could be repaired from putting stem cells into the brain (the most possible during one...

What determines how quickly normal function is returned to the brain after long periods of mentally exhaustive work? Is it similar to the body's other muscles in that the time for it to return to normal is dependent on how much work was done in a particular time period? ie. after doing 5mins of...

If you have to lift some large mass a certain number of feet is there a way to calculate the amount of brain power used?

His recent seizure probably resulted from the tumor. A close friend of mine died of glioblastoma several years ago. It was pretty aggressive and her doctors gave her 6 months - the cute little scrapper took 18. I miss her...

From my limited knowledge of the physics of the human Eye.. I got the impression that the image enters the brain via optic nerve which I always assumed to be an electrical impulse circuit. But if this were indeed the case, vision interpretation would be purely a psych/brain function. The...

1. Assume a cubical pot of water 1 m on each side. Heat is applied to the bottom of the pot. Assume the water at the bottom is held at 99 degrees C while the water at the top of the pot is 4 degrees C. Estimate the convective heat flow (using algebraic physics). Step 1: Compute the net...

Would it be possible to say that the brain in some aspects has nothing to do with the functionality of the mind? For me personally, I don't care how my brain works, it's totally irrelevant for me living my life, but what does this mean? To me it seems obvious that we have to separate the mind...

http://www.movieburst.org/watch/120/The-Boy-With-The-Incredible-Brain/1 Could we change/adapt to a different way of thinking?

Hey all, what magazines, journals, website, etc. would you recommend for aspiring CS majors? Thank you. Jordan Joab.

I would like to put my queries in the form of quesitons: 1- Why are there differences in the intelligence level of people? Why is some person a genius and other a dumb of below-average intelligent? 2- Is it possible to improve the memory? 3- Is it possible to increase the brain usage...

Three people check into a hotel. They pay $30 to the manager and go to their room. The manager finds out that the room rate is $25 and gives $5 to the bellboy to return. On the way to the room, the bellboy reasons that $5 would be difficult to share among three people, so he pockets $2 and gives...

Does anyone know of any good number games or thinking games (i.e. tic-tac-toe) to kill time when you're bored? Something that doesn't even require a pen and paper if possible...

When I was younger, I had a test taken where I had to lie down on my back and have this thing placed on my head (there were tubes or wires or something on it) and told to stay still for about 20 minutes. I would close my eyes and I would be racing through (at seemingly high speeds) a bunch of...

http://en.wikipedia.org/wiki/Binaural_beats Apparently, these entertain your brain waves to a certain frequency. According to some people, there are various health benefits caused by listening to binaural beats, including increased creativity and relaxation. Companies such as I-Doser sell...

Can anyone sense a way to solve this. It would be great help to see your reasoning behind your assumptions. As a result of the credit crisis there are many asymetries in the loan market as a reult this set of question have arisen: Information - take this as true There are two types of...

Homework Statement Young David who slew Goliath experimented with slings before tackling the giant. He found that he could revolve a sling of length 0.750 m at the rate of 10.0 rev/s. If he increased the length to 1.050 m, he could revolve the sling only 8.00 times per second. What is...

Homework Statement This is to find the arc length of r= \theta from 0 < \theta < 2pi I ended up with \int\sqrt{\theta^2 + 1} Homework Equations \int\sqrt{\theta^2 + 1} The Attempt at a Solution I couldn't see a relevant way to do integration by parts so I went with trig...

Let's assume tissue rejection is not an issue. What would happen if you were able to connect neurons from another person's brain to neurons in your own so that they could send and receive signals? What if it was one neuron? 100? 10,000? 1 million? What would that feel like? At what point would...

Wtf do these guys want? http://www.nytimes.com/2008/01/15/science/15brain.html?_r=2&8dpc&oref=slogin&oref=slogin

I just saw a fascinating show on PBS, talking about how the brain can improve itself through a process called neuroplasticity. The program was aired during pledge week, but I am curious if this is an actual principle that most scientists agree on?

I'm just wondering about this, because when I drink coffee, sometimes I feel like I can't focus. Is it possible that drinking coffee will limit my ability to grasp mathematical concepts? What is recommended for helping me to get focused? I guess exercise is good, and maybe antioxidents...

What if the speed of your brain impulses was reduced by half artificially? What would the perceived difference be? What if it was reduced to 10% of current speed? What about .001%? I think time would seem to be flowing faster for you since you are "checking in" less often, like in time...