Questions tagged [brain]

Questions pertaining to the brain: an organ of soft nervous tissue contained in the skull of vertebrates, functioning as the coordinating center of sensation and intellectual and nervous activity.

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14 views

Is regenerative medicine promising for Ischemic stroke stroke patients? ; two points difference in the 47-point test

Many papers says, regenerative medicine using MSCs are promising for Ischemic stroke stroke patients. But in my layman's sense, various data don't seem promising. So, I want to hear the opinions of ...
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Forehead itching sense vs brain over load activity [closed]

I like to know is the brain overload activity could cause the forehead itching sense ,also like to know can brain activity could be sensed by the skin the location of brain parts with more activity, ...
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Is there any health risk in cellular phones?

Cellular phones are taking ever increasing part in our lives, and I keep hearing people saying they are harmful to our health. Are there any scientific researches so far proving or disproving those ...
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Are population-related conclusions obtained from autopsy applicable to the general population?

In this paper, it says that "Although the prevalence of pineal cysts in autopsy series has been reported as being between 25% and 40%, MR studies have documented their frequency to range between ...
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Tilt table test and beta blockers

Is tilt table test indicative with beta blockers for dysautonomia diagnosis? Or is it require drug withdrawal?
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Why has the Notch1 intracellular domain-transfected MSC expected as the greater regenerative medicine for ischemic stroke?

In Japan, SanBio's investigational regenerative medicine product, SB623, become a hot topic. The 'active ingredient' of SB623 seems to be gene-modified mesenchymal stem/stromal cells. That cells ...
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Is forgetting certain spellings a sign of Alzheimer's?

1) Is forgetting certain spellings in English (easy ones, and remembering the tougher ones) and other things like daily chores etc., a sign for Alzheimer's? 2) Does Alzheimer's affect people under ...
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Why are antidepressants considered the most successful therapy of fibromyalgia?

Fibromyalgia is classed as a disorder of pain processing due to abnormalities in how pain signals are processed in the central nervous system. 1 Antidepressants are now the most widely studied and, ...
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39 views

Why does the brain shrink and increase energy usage after dehydration?

Along with mood and energy deficits a dehydrated brain has to use a lot more energy to accomplish the same tasks, shows a study from King's College London. Quote from Dehydration affects brain ...
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Are transorbital lobotomies still considered ethical these days?

Psychosurgery has a controversial history and despite modifications still raises serious questions about benefit, risks, and the adequacy with which consent is obtained. Its continued use is defended ...
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158 views

What things can trigger scintillating scotomas? Are they sometimes classified benign and not a reflection of a condition requiring further treatment?

This is a different question than Are scintillating scotomas really caused by cortical spreading depression? If so, how is this known to be true? asked almost one year ago in Psychology and Neurology ...
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Can repeated light hits to the head cause brain damage?

Can a single or repeated light hit to the head that is mild enough to not shake the head but is followed by a mild headache or dizziness cause brain damage? Does the brain need to hit the skull to be ...
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327 views

Skin receptors on finger tip

How many receptors do we have on our fingertipps per square centimeters? I found 2500 but do not find the source. Is this correct?
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What are normal structures that could be misinterpreted as lacunar strokes on T1 or T2 brain MRI?

Trying to detect lacunar strokes in brain MRI, in T1 they look like a small black hole, whereas in T2 bright-white; located within white matter region. My question is, are there any structures that ...
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Are there side effects of listening to binaural sounds? [closed]

I have started listening to binaural sounds (left side wave of 89.75hz, right side wave of 85.25hz) for meditation every day for 10 to 15 mins in morning. I feel calm, relaxed and focused after that. ...
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1answer
31 views

How often does the organic material of the brain change?

I read the following in Simon Blackburn's Think (1999), page 121: The organic material of my body (except my brain) changes roughly every seven years. It seems strange that the brain is excluded. ...
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52 views

Brain performance suppliments [closed]

My 27 years old brain lacks concentration and memory, mood to perform daily task is lazy. I used to have a test most of the vitamins are ok except D and B complex Below average a little bit. Which ...
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37 views

How our brain discharge old CSF? [closed]

Our brain produces new CSF fluid every hour, so old CSF discharge from our body. My question is where is CSF discharge point? or how our brain discharges Old CSF from the brain. . There is a ...
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400 views

Subconcussive brain trauma

I believe American football and boxing are proven to cause brain damage. I would consider it severe and life changing. But does punching a heavy bag cause subtler brain damage? Maybe wrestling, ...
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33 views

Does diffusion MRI (DWI & DTI) measure diffusion or osmosis?

I am trying to understand the physical property which is measured in diffusion weighted imaging (DWI) and diffusion tensor imaging (DTI). I read that these methods estimate the apparent diffusion ...
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Altered signal intensity lesion in frontal horn of right lateral ventricle in subependymal region without post contrast enhancement

There is evidence of approximately 9*8 mm sized altered signal intensity lesion is noted in frontal horn of right lateral ventricle in subependymal region. Lesion appears hypointense on T1W, ...
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Neurotransmitter distribution in the central nervous system (CNS)

I have been glancing through the article Wikipedia (Neurotransmitter) where in particular at the bottom "diseases and disorders" there is some minor information about an example, but I'm actually ...
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Why do some neurons live longer than others?

It seems that the scientific community agrees that the development of new neurons stops between adolescence and early adulthood. ("Does the Adult Brain Really Grow New Neurons?" https://www....
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1answer
56 views

Does a single brain lobe (e.g. parietal lobe) heat more than others during processing tasks that are related to it?

Of course, our brains are the most powerful, stabilized processors. And they don't go outside of their temperature thresholds under normal / even abnormal(till some threshold) conditions. I felt like ...
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Is tinnitus caused by brain damage?

This question was asked in Psychology.SE with no answer so I thought I would try here. It is well known that loud noises can lead to hearing problems such as temporary hearing loss or tinnitus (...
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1answer
61 views

Is there any intelligence in heart? [closed]

Is it correct to say that heart and brain both are center of intellect ? Has there been any scientific study done to prove that like Brain, Heart also has intelligence and there are heart-signals ...
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Misophonia and autism

I would like to know, is there an area of overlap between misophonia and autism? Because I have heard autistic people are sensitive to specific sounds in absence of love and cover their ears. How ...
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breathing in versus injecting mercury (the gas)

Breathing in mercury is extremely bad and can have consequences for your whole remaining life. It's the property of mercury to evaporate at room temperature, which is why it can get harmful so ...
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Could the cerebral hypoxia caused by voluntarily hyperventilating for an hour (“breathwork”) cause brain damage?

TL;DR hyperventilating for 60 minutes for psychedelic/meditative/therapeutic effect: is this dangerous? Hyperventilation can lead to cerebral hypoxia, as hypocapnia (reduced CO2 in blood) causes ...
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How to keep the brain in an excited state?

When the brain is excited everything is all around better, learning is faster, training is better, socializing is easier and thinking is faster and more coherent. For some, such as myself, however, ...
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1answer
69 views

Medical procedure to sever the brain's ability to communicate with the heart?

So, I think I read some-where that there is a surgical procedure to server the heart's ability to communicate with the brain, for reasons. A negative consequence of this was not being able to, for ...
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54 views

Why do we sleep? [closed]

I was reading many things about sleep. But I am very curious about knowing why do we sleep. Is it only for trashing out toxic materials or is it anything else?
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71 views

Needing a resource for brain health [closed]

I've recently started to do some research about brain health (mentally and physically). I need some concise resources (hopefully a book) to have a general study about brain. Anything from brain ...
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What are the definitions of Time to Peak, Cerebral Blood Flow and Mean Transit Time?

I am trying to compute Time to Peak, Cerebral Blood Flow (CBF) and Mean Transit Time (MTT) maps in brain CT imaging. I tried to find the definitions or some articles but I am not from the medical ...
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104 views

Are aluminum profiles dangerous?

I am thinking about building racing rig from aluminium profiles. Something like this: Original image here: http://www.simracingmachines.com/images/builds/rig2014/IMG_1686s.jpg I would like to have ...
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Does a higher IQ influence the 'high' of weed?

I'm not sure if this is the best place for the question, but it seemed like the appropriate board to ask on.. So, I'm not asking if Higher IQ= Smoking more weed or anything like that. I was just ...
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56 views

How do humans meet the brain’s glucose demand of 420kcal (105g sugar) per day on a healthy diet?

How do humans meet the brain’s glucose demand of 420kcal (105g sugar) per day on a healthy diet? Wouldn't the protein demand in case of gluconeogenesis be tremendous? https://www.ncbi.nlm.nih.gov/...
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153 views

Is there scientific evidence that low-carb diets enhance athletic and mental performance?

Contrary to the recent past, when high carb - low fat diets were recommended, it appears that now the opposite type diet is often being recommended. Many doctors who have written books on the subject ...
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What diet should I eat to perform optimally, maximizing my alertness? [closed]

While studying I have noticed that some diets contribute to wide swings of alertness and tiredness while other diets result in a steady slight brain fog for an extended period. Given the desire to ...
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Does applying pressure on both sides of your head damage brain cells? [closed]

Someone squeezed my head with her hands. I am concerned whether it has caused any damage like loss of brain cells.
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Treatment of addiction

Substance addiction e.g. heroin is treated by gradually decreasing doses of a less potent substance other than heroin (if I am correct). Is this rule can be applied to any other addiction e.g ...
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30 views

Can any disease enhance Brain functioning instead of reducing it?

Parkinson's disease, dementia and Alzheimer are known to degrade Brain's functionality. But are there always negative side effects to disease? Or are there any good side effect that enhances the Brain ...
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Can individuals experience a 'pleasurable' form of psychosis?

From reading anecdotal stories of people with psychosis and schizophrenia online and meeting some people in real life suffering with them first hand, it seems that their experiences are always ...
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1answer
4k views

Withdrawal symptoms of pornography addiction

For a 10 years pornography addict what are the symptoms of withdrawal at the first 2 months ?
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Longitudinal studies on: how attention to emotional stimuli develops from infancy to childhood?

According to LeDoux’s model (1996) we have specialized pathways for processing emotional cues. Pourtois, Schettino and Vuilleumier (2013) offer a neural model of how emotional signals capture ...
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Why I am lossing memory if I work hard? [closed]

I am a software engineer and you know that it requires to think in logical way to develop code. I am also hard working to reach the dead lines just to do not loss job. But from last 6 months ...
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1answer
205 views

How good, and for how long, can endorphins really make you feel?

It seems to be common knowledge that exercise makes your body produce endorphins that make you feel good, but that is a vague idea. What amount of exercise does one need to have to achieve optimal ...
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How the brain would recover by itself?

After reading this story about Terry Wallis and how his brain worked to self recovery, what are the medical/scientific conclusions and theories that we can collect from his medical status and what we ...
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1answer
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Relation between Cold & Mood

Every single time whenever symptoms of a cold start to develop, excluding the general irritation (headaches, runny nose, etc) - there are moments where my mood just gets extremely positive. Is there ...
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How to know if a person has seizures? [closed]

Could you please let us know if the following are symptoms of seizures in a 16-year-old: He goes sudden unconsciousness while speaking normally There were no convulsions. When it happens he start ...