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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How does the brain react to intermittent fasting during the whole cycle?

In the 16/8 intermittent fasting, you eat for 8 hrs then fast for 16hrs. I am curious about how the brain reacts to these changes as the cycle progresses through the day. When will cognitive ...
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Possible brain injury resulting from high doses of anesthesia [closed]

I recently encountered someone who had a heart procedure performed and were suffering significant side effects from the anesthesia. It was determined that they were administered an overdose, though ...
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What is Chronic Cerebral Small Vessel Ischemic disease?

I am curious. What is chronic cerebral small vessel ischemic disease? Does anyone have any suggestions for someone with that disease? What is the life expectancy?
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Can hemophilia be advantageous when the blood circulation is stopped?

First of all, I'm a computer engineer and I have nothing to do with Medical Sciences so this question might sound ridiculous. I found a book( Hall, J. E. 1. (2016). Guyton and Hall textbook of medical ...
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What are ASDH and AS in the context of “cause of death”?

I'm not sure this is technically the correct place to ask this question, but I know I need medical expertise so hear I am. I have been researching my family genealogy recently and, of special interest ...
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What happens after removing a schwannoma tumor?

When a patient is diagnosed with a huge trigeminal schwannoma for example and undergoes a surgery to remove it, what happens exactly to the area where the tumor was growing? Since schwannomas grow in ...
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Can any substance directly damage our certain functions of brain? [closed]

As we know, that if our brain (thinking, memory, logics, etc.) functioning is damaged, there would be other symptoms associated with it. Let me clarify, EXAMPLE 1: suppose a person had COPD due to ...
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what happens to the nerves when an organ is removed?

I am from a data science/programming field, but for my work, i need to better understand what happens when an organe is removed (just removed, not replaced). Indeed, there is nerves, mucles, veins, ...
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Why do water molecules diffuse along axons direction? [closed]

I am studying tractography technique which aims to reconstruct bundles of axons in brain by following the diffusion direction of water. It exploits the difference between grey matter and white matter: ...
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What is the meaning of “subcortical retraction” in a description of MRI of a Kearns-Sayre syndrome patient?

I came across the term subcortical retraction and cannot understand its meaning. Does it mean "the withering of the subcortical areas" (shrinking of subcortical white matter)? From Follow-up ...
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What is the risk of meningitis after nasal hair plucking?

I heard board-certified dermatologist Dr. Sandra Lee (aka Dr. Pimple Popper) refer to a Nasolabial triangle as the "triangle of danger" on one of her tv show episodes. Re-reading the ...
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Would neurons regenerate even in adults? [closed]

I want to know whether or not the nerves regenerate in human adults. My Question Please give me evidences for this issue. What experiments and logic do they use to prove that the nerves are/are not ...
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Understanding the use of medication from EEG

Recently I came across a study in which a group of people was trying to predict the medication ( especially anticonvulsants like Dilantin and Keppra ) a patient was using from his EEG. Does this have ...
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Can the brain adapt to listening to audio in very fast playback speeds?

I witnessed a blind man use their phone with playback speeds that were incredibly fast and completely inaudible to my ears. To my best guess, it would have been about 4-5x speed. (I base this off ...
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Threating Spinocerebellar Ataxia Type 3 (Machado Joseph disease/SCA3) with Citalopram

I have found this article about the "Machado Joseph" disease: http://repositorium.sdum.uminho.pt/handle/1822/57828?locale=pt It's a research of Minho university (in Portugal) about the ...
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How do you tell a brain-dead patient from a living one?

One theme that's been explored somewhat in popular culture is brain death, and the interesting dynamics of what separates dead from alive. In chemistry, death is defined as the loss of the ability to ...
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Why does Delayed Post-hypoxic Leukoencephalopathy (DPHL) have a biphasic clinical course?

Delayed Post-hypoxic Leukoencephalopathy (DPHL or Grinker myelinopathy) is a rare condition where patients recovering from an anoxic/hypoxic brain injury develops new neurological symptoms 2-4 weeks ...
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Can someone die from not sleeping? [closed]

I know this sounds like a weird question, but is it possible for someone not sleeping to die? What are all the negative consequences of not sleeping for long periods of time? Do you have any tips for ...
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Is the MSC-based 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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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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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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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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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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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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441 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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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 ...