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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Brain injury involving no deceleration of the head

Many articles explain that the mechanism of a brain injury is via the relative motion of the brain and the skull due to acceleration, which may cause impacts to the brain with the inside of the skull. ...
Carlos Vazquez's user avatar
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1 answer
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Doesn't Intraventricular Catheter placement damage the brain parenchyma? Is this damage significant? How is it avoided/minimised?

On certain occasions, Intracranial Pressure (ICP) must be monitored and, according to the Principles of Neurological Surgery, one of the ways this is done is by placing an Intraventricular Catheter in ...
ForeverNoob's user avatar
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What is the difference between the vasomotor center and cardiovascular center in the brain?

The vasomotor center is introduced as the following in our coursework: The vasomotor center is located bilaterally in the reticular substance of the medulla and lower third of pons. It contains the ...
Filthyscrub's user avatar
1 vote
1 answer
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Is there a prostate orgasm?

Is there any scientific evidence that orgasm can be achieved by stimulating the prostate? The 2023 article "Atlas of the Experience of Receptive Anal Sex in People with a Prostate" states: ...
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What is meant by "declaration of brain stem death is made mandatory for every hospital"?

I am an activist working for organ donation popularization in India, a country with a dismally low rate (0.5 per million). Apart from working for deceased donation, I had also offered my own organs as ...
Ritesh Singh's user avatar
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How well is the brain protected from physical hits ? Can small hits or blows cause brain damage?

Small punches like Diaz does to himself here : https://youtu.be/F5OYXELOwjQ#t=195s I am just curious about how hard must a punch be to cause even light brain damage or IQ loss.
Nono's user avatar
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1 answer
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Topical local anesthesia affecting the brain

If a medical provider uses local anesthesia on say the nose or ears (a location near the brain), could it extend to the brain and put part of the brain to "sleep"? Would the patient be able ...
Erik's user avatar
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Why do neurostimulators for DBS need to be implanted?

Neurostimulators for deep brain stimulation (DBS) are called implantable pulse generators (IPG), precisely because all of them end up being implanted inside the patient's body. Now I get that the ...
David Cian's user avatar
2 votes
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Covid may cause brain to degenerate three times faster than normal?

I found this study on GB News: Covid may cause brain to degenerate three times faster than normal, Oxford study suggests After reading the article I still have a few questions. I found the study ...
guest's user avatar
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Are the surgical site infections "in the brain" caused by same bacteria found in "other parts of the body"?

Are the surgical site infections "in the brain" caused by same bacteria found in "other parts of the body"? There's a blood-brain barrier so, most of the bacteria that infect ...
Pretty_Girl's user avatar
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Where to Download Brain Anatomy 3D Model?

I am doing a virtual reality simulation for endoscopic brain surgery. I need a medically accurate 3D model of a human head. It has to include all the veins, skull, muscles, nerves and brain anatomy. ...
FaridaElOraby's user avatar
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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 ...
Ahmed Maher's user avatar
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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?
CallmePatti's user avatar
2 votes
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134 views

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 ...
patoglu's user avatar
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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 ...
Jimmy G.'s user avatar
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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 ...
XYZ's user avatar
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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: ...
HelpNeederStudent's user avatar
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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 ...
CowperKettle's user avatar
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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 ...
Chris Rogers's user avatar
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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 ...
user14257473's user avatar
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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 ...
michioKsku's user avatar
2 votes
1 answer
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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 ...
Tal's user avatar
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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 ...
wilkvolk's user avatar
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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 ...
Blue Various's user avatar
-1 votes
1 answer
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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 ...
Aqqqq's user avatar
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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?
red0ct's user avatar
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3 votes
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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 ...
Blue Various's user avatar
2 votes
0 answers
50 views

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, ...
Bob Ortiz's user avatar
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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 ...
Bob Ortiz's user avatar
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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 ...
Bob Ortiz's user avatar
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3 votes
0 answers
98 views

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 ...
Moe Limson's user avatar
3 votes
1 answer
62 views

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 ...
LHM's user avatar
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1 vote
1 answer
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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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2 votes
1 answer
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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. ...
Frank Hubeny's user avatar
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1 answer
43 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 ...
asad app's user avatar
  • 111
4 votes
1 answer
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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 ...
srcerer's user avatar
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0 answers
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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, ...
Aditya Shah's user avatar
3 votes
0 answers
57 views

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 ...
Diger's user avatar
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0 answers
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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....
Daniel Rodríguez's user avatar
2 votes
1 answer
70 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 ...
Orhan G. Hafif's user avatar
0 votes
1 answer
66 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 ...
gpuguy's user avatar
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2 votes
0 answers
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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. ...
Gissipi_453's user avatar
-2 votes
1 answer
101 views

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 ...
watchme's user avatar
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1 vote
1 answer
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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 ...
klagaru's user avatar
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1 vote
0 answers
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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 ...
Gopi's user avatar
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0 votes
1 answer
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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 ...
Peter Kosinski's user avatar
2 votes
0 answers
56 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?
Fazla Rabbi Mashrur's user avatar
1 vote
0 answers
112 views

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 ...
Attractivetoaster's user avatar
-2 votes
1 answer
43 views

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 ...
user20660's user avatar