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Anatomy, Physiology and Neuroscience

Human structure and function.

  1. Hello, I had wisdom tooth removal in 2008, and felt pretty bad afterwards. It was my right and lower wisdom tooth. This lasted until... the present. And will surely continue until they are replaced with some implants, and then only hopefully. It took me several years, but in 2012 I realized the sharp change that came to my life started at the wisdom tooth removal, and quickly I came to the conclusion that the removal of the wisdom tooth must have changed something in the anatomy of the mouth, perhaps moving some muscle. It was odd, but my problems thinking, the agitation I felt, the problems moving the head and jaw, speaking and singing, ear popping in my…

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  2. Greetings! I am looking to learn about neurotheology as a hobby. I have no academic background in any scientific field (my degree is in linguistics). So far I've only picked up Andrew Newberg and Mark Robert Waldman's book, "How God changes your brain", and I find it fascinating. I would like to learn if there are any studies and/or books on the following topics: 1. cognitive flexibility and religion: - why does the same sufferings/hardships draw some people towards religion and a search for God, while making other people depart from religion and lose their faith? - have there been brain scan comparisons done of people who have lost their faith and people …

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  3. It is theorized that certain genetic disorders are caused by selection pressure and overdominance, e.g. a recessive mutation may boost IQ in heterozygotes despite being harmful or even lethal in homozygotes. Examples include Tay-Sachs or Gaucher's disease. See Ectopic dendrite initiation: CNS pathogenesis as a model of CNS development (Siegel et al., 2002). The putative mechanism for elevated intelligence is reinitiation of primary dendrites on mature cortical neurons. My question is, if adulthood dentritogenesis promotes learning and boosts IQ why hasn't the human organism evolved to have common non-pathological alleles that do this already without the need for dang…

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  4. Hi: I injured myself. My anterior right delt hurts. I am pretty sure it was for doing weighted dips but I cannot assure that because I did not feel pain while doing them. It was when I did them in a posterior workout. I have been doing a lot of research and I think It could be a biceps tendon injury or a subescapularis one. But what I read everywhere is that you should feel pain when lower the body towards the floor but only hurts when I go up, even when a corrected tecnique (I guess that I was lowering too much from the 90º). When I do bench press or declined press does not hurt (maybe a slight pain). What do you think?

  5. Quick question. How does your brain function when you are dehydrated? Because I think that is one of the factors which contributed to my sudden "Awareness" of things.

  6. Started by Amaton,

    My entire life, I've had this peculiar relationship with a common food favorite -- chocolate. Nearly every time I eat something with a lot of chocolate, there's a sneeze or two. Name any chocolate-rich treat, and if it goes into my mouth, I can't help but sneeze. This typically only happens with the first bite. After that, I can chunk down on it without any other noticeable effects. The same happens with strong mint, and I'm sure I'm not the only one on this forum who has such a reaction to either or both. I used to think it was some very mild form of allergy, but upon research this is most likely not the case. The conditions are allegedly related to a much mo…

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  7. Started by geordief,

    I thought this was an interesting article on the BBC website. https://www.bbc.co.uk/future/article/20220519-does-hypnosis-work I was interested to read there that it might be a treatment for anxiety Has anyone any experience with or knowledge of the subject ?

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  8. Started by studiot,

    Most of us have two eyes, or do we ? When we 'see' we have two organs that receive light and construct an electrochemical model on each of two retinas. However this facility is of little use until that model is transferred up the optical nerve to the brain when a new model is constructed from the incoming information, and also may include information from other sense organs and our memory. If we close our eyes we can still construct models in our brain. In fact some close their eyes to 'concentrate' or 'think hard'. So the subject for discussion is, "Does the mind's eye exist and if so in what sense ?"

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  9. Hi, this has been on my mind to the point I’ve even been trying to do research into it. Would it be possible to remodel bones? Such as the pelvis? This is in regards to sex changes. Looking at the male and female pelvis, the differences don’t seem so radical that it would be impossible to remodel one to look like the opposite sex. Could we theoretically speaking, make cuts in the bone and around the pelvis and place them in a wider position to match that close to a females? Obviously we would need to calculate the extra bone that would need to be put in place which I assume could be done through growing them through stem cells or taking bone from other parts of…

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  10. My suspicions have been confirmed. When I studied cognitive neuroscience and when I read news in this area, it was and is very disconcerting to see how often far fetched conclusions about causation are made there on a shaky basis of a small sample size, a multitude of uncontrolled parameters, and correlations only. This new study confirms that more often than not these results are unreliable and unreproducible. A new research paradigm is needed to move this science from stagnation. Brain studies show thousands of participants are needed for accurate results | University of Minnesota (umn.edu)

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  11. Started by Doogles31731,

    There seems to be a general belief within the Health industries that doses of the vitamin Ks in excess of physiological requirements, will cause or facilitate emboli of the lungs, heart or other tissues. I’ve been unsuccessful in finding any evidence to support this, yet it is the basis of the worldwide use of warfarin as an anticoagulant. I’m looking for solid evidence that excessive vitamin K causes problems, with the emphasis on excessive. Please don’t supply references to the normal role of vitamin Ks in blood clotting. If you do find such a reference, would you please highlight the excerpts that support that belief. I would like to scrutinise such e…

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  12. Started by PeterZ,

    I would like to know if plasma (comprises 55% of blood volume) is turned over faster due to sweating, and if all of the various components of plasma are also transferred to sweat, thereby requiring the body to replace the components of plasma faster than it would without sweating. For example, a major component of plasma is albumin, which has also been identified in sweat, although I do not know if the albumin in sweat ultimately comes from plasma or has another origin. I have seen literature which indicates plasma volume loss with extreme sweating, but it does not indicate whether the other plasma components are also transferred out in proportion to water loss. …

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  13. The pic is of a young, unmuscular actress, to show that these shadowy indentations are not the result of working out, nor is this extended underarm hair. Every contour of the body seems to have a name, so I thought I'd ask.

  14. Started by Hans de Vries,

    1. If the serotonin hypothesis of aggression is not true, what are alternate explanations? 2. I have read that oxytocin is implicated in emotional empathy? How strong is this association?

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  15. Started by TheVat,

    An entertaining look at human energy - mood, motivation, mitochondria, and everything else. https://www.newyorker.com/magazine/2021/11/08/energy-and-how-to-get-it

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  16. I sucked at learning languages but I really want to learn conversational French. Learning a new language has always been cited as something that can change your brain and based on the Sapir-Whorf hypothesis, your native language influences your thoughts. I think this is correct as I listened to a song in Spanish with English translations, and it really didn't make sense to me. Yet it rhymes and sounds good in Spanish Anyway, lets say I become fluent in French. What would change in my brain, if an EEG was done on my brain before I start studying and again after I master it, if anything.

  17. Started by mistermack,

    I've known for years that the BMI charts are miles out for me. There are various adjustments for "heavy build", "race" etc. But I haven't seen the one that should apply to me. My build is quite Neanderthal. Long body, short legs. And it's the ratio of legs to height that I'm posting about. I'm 5ft 6in in height. (1.68m approx). I used to have a friend who was 6ft 3in (1.91m approx). Sitting down we were the same height. But standing he was 9 inches taller. His extra height was all leg, which weighs a lot less than body, but the BMI only goes on overall height. I would expect his ideal weight to be a bit more than mine to reflect the extra leg length, but the…

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  18. Started by Der_Neugierige,

    Which structures do determine if someone is androphilic or gyophilic. What confuses most is the fact, that you can male hetero or homo just by brain lesions?!? But its still neurobiological??

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  19. I have a question - is there a vacuum anywhere inside the human body? Of course, the spaces between cells are filled with interstitial fluid, but what about hollow organs, like for example stomach, bladder, bowels, uterus?

  20. Started by Satyesu,

    I want to wrie a story in which the CEO of an augmented reality/social media company, one of the richest people on the planet, funds an attempt to put his brain in a state of constant bliss, or at least contentment. How could we theoretically do this (keeping in mind this is sci-fi), and what problems might arise?

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  21. I have an excellent memory. I remember little details that can amaze my family. My memories are often as vivid as the experience I once had. However, my memory does have holes in it as I was never diagnosed with Hyperthymesia or any superior autobiographical memory. I forget short term stuff all the time. Yet I was talking to my mother. 4 events in my life; I have no recollection of. My mother told me and when I tried to bring up the memory, I drew a complete blank. They are 1. Seeing Finding Nemo with my best friend and his mother and my mother and then going to McDonalds and meeting a nutty women who would later become very frequently seen in my life. 2. Seeing Mulan wi…

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  22. Started by Der_Neugierige,

    Can someone name me some famous neuroscience institutions? Max Planck? MRC?

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  23. Greetings: I am looking for the correct terminology which describes the testing on living human beings, with the idea, that the information gained, others can be helped. It has for among others: Immunology testing. DNA testing. ... I have, for instance, an extreme tolerance to chemicals, caffeine, ... , as well as a very high pain tolerance and stress tolerance. I use battery acid to clean my hands from grease without getting burns, I drink 2 to 4 litres very strong coffee a day with no side effects, but I also need 4 times the normal prescribed medication, or it will not be effective. It's not al sunshine, of course. Same for the high pain toleran…

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  24. Or does anybody know of the scientific explanations for empath's abilities? By "empath" I mean people who claim to experience the emotions of people near them. The only explanations I've found are "mirror neurons" and "mirror-touch synesthesia", but I want to know if other explanations exist. Any links to peer reviewed articles, or articles written by reputable authors would be appreciated. Thanks!

  25. Started by Gian,

    For vitamin D synthesis, is daylight on an overcast day as effective as direct sunshine? Cheerz GIAN

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