Anatomy, Physiology and Neuroscience

It's been two days now and this weird sensation in my right ear is not going away. It feels like it's become extra sensitive, or like the inner cavity has become more hollow so that all sounds seem to resonate more. Could this have to do with damage to the eardrum or ossicles or anything. I haven't been listening to any loud music or been around any loud noises. What could this be?

Hi. Some societies have the daily habit of eating huge volumes of food, without neccessarily having big bellies (like in Spain:-) ) Some people (like me) habitually eat really small quantities of food. I have read -and seen- that poorly fed kids as in some African nations develop large bellies. What is going on ? Can persons fed in large quantities not develop large bellies because their metabolism is used to count on never a short supply of food ; and people eating very little store reserves as a natural 'defense' mechanism and thus developing large bellies ? Miguel

http://www.wnd.com/news/article.asp?ARTICLE_ID=53327 That is the hypothesis of the author of the above article. His contention is that a consumption of soy products containing phytoestrogen will result in homosexual tendencies. So, who agrees with this awesome hypothesis? I say flawless logic! sarcasm sarsasm sarcasm sarcasm sarcasm sarcasm sarcasm sarcasm

How can I get Sertoin with out takeing Celexa? ITS THE SEXUAL side effects I do not like;yet the sertoin really helps me focuse..Any suggestions..

If nociceptors are the name given to pain receptors, what's the name given to pleasure receptors?

How does it all work neurologically speaking? I have, a weak understand of neurology, but I will look up anything I can't understand. I'd really like to know though how that works.

Not sure if the right place to post this question but here goes. My Uncle has recently been diagnosed with Lung Cancer and It has just occured to me that of all the people I have known/heard of who have died from Cancer were all diagnosed prior to death, no-one that I have heard of has died and then a post-mortem has concluded Cancer was the cause of death. So my question is Do people die from Cancer without it first being diagnosed Thanks in advance Kirlian

As far as I understand, certain visual areas of the cortex (i.e. sensory and association) develop rapidly from birth through thier constant stimulation. Anyway, if this is true then what would be the result of surgically removing cataracts from a person who has been blinded from birth. Would these areas slowly redevelop or is there an almost cut off point with neurodevelopment, which would result in the person seeing but having no spatial awareness etc?

I was having a discussion earlier and wondered when a baby's first heart beat is. I think it would be at some point whilst the baby is still in the womb. But then what sets off this first beat? Is it some kind of electrical impulse, from where? Or a signal from the baby's own brain? When does a baby heart beat for the first time and what initiates or stimulates this first beat to occur?

I want to know if I understand enough about how neural circuits form to make a certain claim. First, take a look at this diagram: We have neuron A connected to neuron B connected to neuron C... D... E. When neuron A fires, it stimulates neuron B which in turn stimulates neuron C... D... and E. Also, there is a weak connection between neuron A and neuron E, but this connection is too weak for the firing of neuron A to stimulate neuron E. Finally, assume that when neuron A fires, neuron E eventually gets stimulated and at this time neuron A has not yet died down. So here's my question: if neuron A is still firing at the time that neuron E fires, is this a s…

Why is it that certain areas of the Cortex on one Cerebral hemispheres will only receive information from the opposite side of the body. For example if a person has a stroke damaging areas of thier left motor cortex, than movement on the right hand side of the body will be affected. Surely having to cross over requires more neurons giving a slight, but measurable difference in reaction time?

I want to become a cognitive scientist. I know, it is a broad field. I am currently going to a community college (a pretty good one, when you consider the others), but there is no cognitive science program here. So, what I am thinking is; get an associates degree here, then go to UofM to major in cognitive science (I'm sure I'll be more specific than that in the future). The problem I want to ask you guys is: what associates program would I benefit from the most, before going into cognitive science? If this question doesn't have an answer, tell me why. I'm trying to feel out my goals right now, and need any type of feedback from knowledgeable people. Here is …

Would most brain injuries at birth lead to pralysis, CP(cerebral palsy), etc. (Just a question!)

Hi everyone! On http://en.wikipedia.org/wiki/Karl_H._Pribram I read that "Drastic lesions can be made in animal brains which reduce, but do not extinguish memories (training), as demonstrated by Karl Lashley in the 1920s." Does anyone know about these experiments? How is this seen today in neuroscience? Can memories be extinguished by brain lesions? Another question I have refers to a different Wikipedia article: http://en.wikipedia.org/wiki/Memory#Physiology It it you can read: "Other scientists who have investigated the nature of memory, namely neurologists John Carew Eccles and Wilder Penfield and biologist Rupert Sheldrake, have suggested that memories…

as it says, would it cause that person to smell odd? perhaps the medication required after its removal?

If a synapse is inhibitory or excitatory, does it make sense to call the neurotransmitter at that site inhibitory or excitatory? I mean, for any synapse, there is only one neurotransmitter that it releases, right? What about the receptors on the recipient neuron - will there be only one type of those, either inhibitory or excitatory?

What diseases cause "Splinter Hemorrhages" in the nail bed ?

Science magazine has an entire section on computational neuroscience in this month's issue: http://www.sciencemag.org/cgi/content/summary/sci;314/5796/75 One of the articles is on a neuroscience researcher from right here in Boulder: http://blogs.zdnet.com/emergingtech/?p=376

After hurting my neck and piled with pain killers by the doctor, I lay on my back in bed for 24 hours in the same position. After waking up I realised two of my fingers in the right hand had permanent pins and needles and were completely numb. Squeezing my hand into a fist and opening it also had uncomfortable reaction along the nerve in my elbow. The worst wre the constant cramps I would get in my hand! I was told this was due to a crushed nerve and had an operation which was only 50% success, curing one of the fingers and leaving the other same. This is causing problems because occasionally I get cramps if I hold my hand in the same position for long periods of time…

Is it true that a man's ring fingers are supposed to be longer than his index fingers? I was reading an article today which suggested that this was the case. Naturally, being a bloke, I looked at my own hands immediately, but found that my index finger is 2-3mm longer than my ring finger on both hands. It doesn't sound much, but it is actually very noticeable. At first I thought the article was a load of tosh, but I've had a glance at some of my friend's hands and, in line with the research, they all have longer ring fingers. How unusual is it for a man to have index fingers longer than his ring fingers? What does it mean and what can people tell from it?

is there any mark difference between vasa recta & peritubular capillaries in the nephron of kidney ?????

Ok, here's my story... I'm a Senior in highschool, I have to do a Senior Project in order to graduate, and I've choosen my topic to be physical exercise. My only problem I have is I can't find any sources exept a few referecne books and the rare plausable website source. I can look for more books at my school library, and the one near where I live as well, but the internet is a problem. Search engins are unreliable, since the first 10,000 results are aimed torwards fat people who need to loose wieght, or anorexic people who THINK they need to loose wieght. More specificly, I need to do research on the physiological effects of exercise and whatnot. So i…

This is something that I rarely think about anymore, but I used to see strange things in my bedroom when I was very young. I used to see strange lights and shapes, and they often formed the shapes of large objects or people. They often made noises, or talked to me. They would appear in my bedroom only on certain nights, and I would sometimes yell for my parents to come in and see them. However, they would always disappear immediately when my parents came into the room. After I started elementary school, I never saw them anymore. My parents always told me that I was just dreaming, but I know that they weren’t dreams. I remember sitting up in my bed and watching t…

Holy crap! http://www.cnn.com/video/player/player.html?url=/video/specials/2006/09/11/gupta.what.is.genius.cnn Realtime imaging of the entire brain with nanosecond precision!

http://www.nature.com/news/2006/060904/full/060904-11.html A paper in Science has reported that a woman in a vegetative state has apparently responded to people asking her to think of doing certain tasks, like playing tennis. After being asked to do so fMRI scans showed brain activity in the same regions as in controls. Owen A. M., et al. (2006) Science, 313. 1402