Anatomy, Physiology and Neuroscience

Hello, Are we more likely to get bad dreams when we are younger? Is it something to do with the person's knowledge about the dream itself and their belief that it is real, not too sure. Thanks in advance

This has been going on for some time now. I've also noticed that I've lost my memorization capability to an extent around the same time this has been going on. The crazy part is, these events are actually happening after the dreams occur. Meaning, somehow I am capable of witnessing a blurry glimpse of the future in my dreams. I don't have very "fluent" dreams, meaning they're generally blurry or short scenarios. When I wake up, I don't take note of these glimpses and I end up "forgetting" them very quickly. Since I'm seeing no documentation whatsoever on such a topic, I'm deciding to name this the Future-Dejavu Syndrome (my naming isn't too .. unique. sorry) …

I find that if I visualise a face with enough concentration, there comes a point where, independent of my concious movement, my body starts to ASSUME the mannerisms of the person who's face Im thinking about? What is going on? And not only that. Everything I do, while simultaneous focusing on the mental image of that face, will be done exactly the way that person would do it, without me trying to consciously imitate him! how does this happen? its like I can actually transform into other people merely by thinking about them! For example, say my friend stella has a unique way of laughing and talking. Now when I close my eyes, visualise her face strongly...and ju…

Hello everyone! I'm currently working on the final project of my Psychology's degree, and the topic I've chosen is the relation between the maturation of the PFC and the development of executive functions. As you will see, my work is quite simplistic, as I'm mainly focusing on brain morphology. Although I'm finding very nice papers to work with, there's something that particularly bothers me about the different methods to measure PFC maturation. On the one hand, several studies show that synaptic density peaks at around 4-5 years of age in the PFC. On the other hand, it's widely known that the volume of gray matter peaks at around 11-12 years of age in the PFC. So, I kn…

I read magazines like science and tech briefs and in one of them i read really interesting topics like they are trying to make meat in a laboratory, they have invented a helmet for football that measures breathing rate heart rate better against concussions, and can tell how strong your concision is after you get it, but what really caught my eye is a type of capsule that can measure your heat rate breathing rate ,take pictures of the gastro intestinal tract and in the future they are planning to make it determine breathing and heart problems. http://www.medicaldesignbriefs.com/component/content/article/mdb/tech-briefs/23699 i think its grate to have something that can…

Some people who fell in love with each other and married could lose interest to each other after some period of time. When you listen some melody and like it very much, you may find that it doesn't cause the same feelings in you after you hear it 100 times. You may lose interest to some type of delicious food if you eat it too often. Many drug addicted people switch to larger doses or stronger drugs with time. Etc. What is a neurological mechanism of it? What happens to brain?

Hello everyone, I'm a medicine student and i have final exam in general physiology, one of the topics in the course is Action Potential, I can say i understand the action potential pretty well, but I have something to ask about which i still don't know. As action potential develops from supratheshold local depolarization, sodium influx depolarizes the membrane until the inactivation gate of the voltage-gated sodium channel is closed at the peak of the diagram, and so on the membrane at this stage can't be depolarized again until the voltage-gated sodium channel retains its original configuration in which the activation gate is closed and the inactivation gate is open…

does the vertebral artery go all the way up to the anterior of the medulla oblongata near the pontine artery?

Which strong stimulants that available over-counter or herbal, develop practically no tolerance in difference from caffeine? I wish to know about the strongest ones.

Hello I don't understand why people with red-green colorblindness see red and green things in a more yellow way. These people have no M cones so the ganglion cells can't be stimulated by M cones and to see yellow there has to be a stimulation of M cones and L cones.

Is the mind between the brain casing and the top of the head at the inside of the head or Is the mind spiritual since I can hear my voice in my mind, or is my mind inside my brain? How can the mind be over matter when the mind is matter as well? Paul pauljames@brmemc.net cuioursone

I can't find it on a diagram anywhere.. It looks too large to be a node and too round to be an accessory parotid gland, but maybe I'm incorrect. Would appreciate the help!

Warning: Although this scenario is entirely fictional, the content may be disturbing. I'm writing a story in which a male is killed by multiple gunshot wounds to the head and chest. Directly after the shooting, the murderer removes the victim's pants and stimulates the penis. Is it possible for an erection to occur? He would have been dead for less than 2 minutes when this happens. I have read about erection occurring naturally during/after hanging, but there's no evidence for gunshots to have the same effect. Erection normally requires a heartbeat to force blood into the penis, but I'm wondering if this can be overlooked because someone is directly stimul…

http://forums.studentdoctor.net/threads/hypokalemia-repolarization-qt-prolongation.313878/ Apparently IKr channels are gated by extracellular potassium, and Ke determines the conductance of IKr channels. This supposedly explains why counter-intuitively hypokalaemia prolongs the QT interval and increases the risk of early afterdepolarisation and torsade de pointes. Can someone with insight kindly explain how this gating works at the molecular level? Input would be really appreciated. Is there a pocket on the extra cellular domain of the IKr channel that binds potassium agonistically? I'm thinking along the lines of the GABA-A channel having a modulatory domain …

Hello everyone, This has bothered me for sometime now. Ok Pulmonary embolism , now decreased perfusion into a part of lung. No blood available for oxygen from lung to diffuse into. Blood has decreased oxygen. That is fine but since no blood is reaching the lungs, the carbon dioxide should also be retained in blood, shouldn't this elevate carbon dioxide in blood. Ok I understand body now goes into relfex tachypnoea to get more oxygen in mean time, and this will also push carbon dioxide out. But how can this reduce carbon dioxide level, if the lung is not receiving carbon dioxide from blood anyway, due to decrease perfusion. Thanks

Is it possible currently, or theoretically, to stop only intentional action potentials from moving away from the brain(wouldn't want to stop the heart and lungs) to the body without the use of drugs so that the brain remains active while the body is disabled? Like an on/off switch for body motion.

I recently took an exam in which my professor asked "which is not a component of the cerebrum?". I answered the pons, but was a little thrown off since the thalamus and hypothalamus were also options. It has always been my understanding that the cerebrum composes the cortex and medulla of the cerebral hemispheres (which compose the telencephalon). The hypothalamus, thalamus and epithalamus make up the Diencephalo. Since the Telencephalon and Diencephalon both make up the forebrain, I asked the professor if he meant "which is not a component of the forebrain?" Rather than cerebrum...... Anyway, I was told that the cerebrum includes the hemispheres as well as the thalamus…

Hello everyone, Do you think is possible to measure (at least) the proportion (in heads) of the human body from a single view? My PhD is focused in studying Academic Nude Paintings (male and female) and it would be interesting to measure the proportions of the bodies. The subjective view of the painter is taken into account, but in some cases, I have the same model painted at the same time (or not) by different painters, giving different views or positions of the model. Thank you so much!!! Anne

Because the thalamus regulates all sensory information(besides olfactory), along with intentional movement, could manipulating the thalamus with an inject-able mesh, similar to the one created by Liber Researchers, successfully create a matrix-like virtual reality? If not, then why?

In the movement of pronation, the radius crosses over the ulna, so that thier diaphyses or shafts make the form of an X. Do they impact in the middle?

is the olfactory sulcus hidden by the olfactory tract and olfactory bulb? If not, is it more medial than the orbital sulcus? thanks

Can we presume that sexual orientation, androphilic and gynephilic, are orginated in the human hypothalamus? I mean it is a drive that you can not learn or turn off as same as hunger or thirst. And the nuclei of the human hypothalamus are connected with the autonomous nerv system. And someone who gets horny when he sees a naked woman still gets horny when he is 50 years old. Sexual orientation is pretty stable as same as hunger or thirst. This rather speaks for the hypothalamus in generating a certain sexual orientation. Doesn't?

is it possible to memorize something complex for the rest of your life? hoe many times do you have to replete something to memorize it for life? I really want to learn chemistry, biology and other sciences but every time that I watch a lecture online or read a text book I dont remember enough things I try repeating them ,it takes me a long time to keep repeating something long enough to memorize it and i think what is the point of learning science.I spend so much effort in memorizing but dont use it. I need to repeat things every so often to know the information and not forget it and if I don't use it i will forget it, I am not going to want to reapete a whole textbook w…

Western writing is from left to right, and using the right hand is more efficient or 'proper' Do languages written from right to left mean to a certain extent, that the eastern people is mostly left-handed ? Or pushed to be left -handed ? When my daughter started using pencils in preschool, she tended to be left handed. Which I pushed and encouraged to use the right hand. And worked since. Later learned my parents did the same to me.

I just want to check - does the superior thalamostriate vein really run near the margin of the occipital lobe and the temporal lobe in association with the pia mater? I am using a software from 3d4medical called brain pro. Sometimes it mislabels anatomical locations with its' pins system for labeling. thanks for your help