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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16 views

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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32 views

Would neurons regenerate even in adults? [closed]

I would like to know a proper answer because this has been an ongoing debate for quite some time. If there's proven evidence that this is completely the case since many studies provide great amounts ...
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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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55 views

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 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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45 views

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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46 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 ...
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238 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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32 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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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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35 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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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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62 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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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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71 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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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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105 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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55 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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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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5k 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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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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190 views

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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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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154 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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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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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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271 views

How common is CTE in normal adults?

How common is chronic traumatic encephalopathy (CTE) in normal adults who don't have obvious risk factors such as high-impact sports? Have there been any studies done on the normal population as ...
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Noogie = concussive force?

Can rubbing ones head vigorously with the knuckles result in brain trauma (essentially a hard scalp massage with the knuckles). Forceful enough that it is putting pressure on the scalp and causing ...
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1answer
59 views

Are there no threats and only benefits for using hyperbaric oxygen therapy?

Following this story and many others, I read articles that hyperbaric oxygen therapy can help people with brain damage but can also help healthy people. I heard that hyperbaric oxygen therapy can ...
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Ringing in ears

Can somebody tell me, what's that ringing sound in the ears which prevails even when somebody is in quiet surroundings? Is that sound real or just created by our brain due to some sort of ...