Questions tagged [brain]

Tag for questions regarding the brain. The brain is the portion of the central nervous system that is located within the skull. It functions as a primary receiver, organizer, and distributor of information for the body. It has a right half and a left half, each of which is called a hemisphere.

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29 views

Is there a neurological difference between someone experiencing a “normal” trauma response, and someone with PTSD? Or are they on the same continuum?

I've been reading Dr. Bessel van der Kolk's book The Body Keeps the Score. Dr. Van der Kolk describes how, in people with PTSD, the brain actually undergoes changes in response to trauma. Their ...
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1answer
36 views

Measuring serotonin in the brain with a sample of spinal fluid

Is it possible to measure serotonin with a sample of spinal fluid?
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1answer
52 views

Why is the occipital lobe behind instead of in front?

These are regions of our brain: Our eyes are in front below our forehead, however, the visual area Occipital Lobe is behind. Are there any biological reasons for this? why shouldn't Occipital Lobe be ...
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1answer
58 views

Do people who experience heautoscopy become unable to see their reflected image in a mirror?

I understand that people who experience autoscopy can see their body image outside them without a mirror. I had read many years back in a paper that people who experience the inverse phenomenon called ...
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1answer
34 views

Is it scientifically backed that sensory signals always go through limbic/emotional brain system?

From the book Emotional Intelligence 2.0 by Travis Bradberry & Jean Greaves: The daily challenge of dealing effectively with emotions is critical to the human condition because our brains are ...
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1answer
39 views

How action potential is generated while dreaming

I would like to know what generates the action potential in the brain areas that is relevant to dreaming, since our sensory nervous systems don't work (or do they?). What else can generate the action ...
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1answer
35 views

Question about the role of the sensory receptors compared to the sensory cortoces

I have two questions regarding the fact that each sensory receptor has its specific ion channels that open in response to a specific stimulus (for example, ion channel that opens when streching for ...
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28 views

If everything that I do gets represented statistically, then would my non biological version be considered real or artificial? [closed]

That is if my entire brain gets modeled both atom by atom and functionally in a virtual environment, then would my replica be considered artificial?
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32 views

Neurotically, what is the difference between learning/memorizing and understanding?

I'm trying to understand how our brains - neurons or other chemical processes work in regards to learning/ memorizing and understanding. I found a lot of "theoretical" discussions on the topic- e.g. ...
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2answers
42 views

Is exercise considered a 'fight-flight' situation by our brain?

When you do heavy exercise like running, your heart rate, and breathing increases, is it because of the sympathetic nervous system controls it? Or the Sympathetic nervous system only activates on the ...
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2answers
73 views

Would an electroencephalogram detect a chip in you brain that is sending signals?

To clarify the question, if you had a chip inside your brain that is sending bytes via wi-fii, bluethoot or other kind of waves, would the encephalogram detect anomalous activity? Are the waves ...
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1answer
30 views

Satisfaction from music due to correct prediction of a sound

Ive randomly thought about a vague idea that perhaps the satisfaction I experience when listening to music is due to my brain correctly predicting a next sound in a sequence. Do you think that has ...
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Question about the left-brain interpreter characteristic

I got to know the concept that the left hemisphere of the brain has the ability to infer conclsions about the world, even if the information on which it relays is not necessarily valid, from ...
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15 views

Which part of the brain “lights up” most consistently when someone is watching cartoons?

I have a vague memory of learning that there's a consistent part of the brain that "lights up" when someone is looking at a cartoon rendering rather than a photo. Which region would this be?
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If it takes multiple action-potentials to cause one action-potential in another neuron, why don't brain signals dissipate almost immediately

I just got into neuroscience like a couple of months ago, but I can't, for the life of me, figure this out. Wouldn't it take a humongous amount of action-potentials in, for example, the thalamus for a ...
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1answer
45 views

Why can't we do the things we know instantaneously?

In the following video eventhough people know that when handlebar of the bicycle is turned left the wheel of that bicycle is turned towards right and vice versa, they can't ride that new bicycle ...
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How firing of neurons stimulate reality? [duplicate]

Iam just an enthusiast.When I look for how does our brain works it boils down to firing of neurons in a pattern. I read that all of our thoughts, memory is due to firing of networks of neurons in a ...
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What would happen when the vitrome-dial hypothalamus get destroyed while there is no food to seek for?

Rats with VMH damage overeat because the ventromedial hypothalamus controls the body's ability to digest and store food. (Keesey & Powley, 1975). It controls digestive reflexes. When the ...
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How many hours per day our brain can learn? [duplicate]

I am interested to know if there are researches about how many hours per day our brain can learn new things? Are there any constrains for brain or we can train our brain to learn as much as we study ...
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1answer
54 views

Does thinking or focusing on something alter a neuron's speed?

I Googled about this but couldn't find any thing precise to be that does thinking about something hard alters the speed of neurons impulses? I have heard of neurons velocity being variable but want to ...
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37 views

Alpha wave changes and brain waves shutdown vs sexual actions

I liked to know more about brain waves and sexual actions ( like foreplay, orgasm, etc). So I found this paper : (REVIEW:New Electroencephalogram (EEG) Neuroimaging Methods of Analyzing Brain ...
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60 views

Number of core feelings?

In Emotional Intelligence 2.0 it is stated: We have so many words to describe the feelings that surface in life, yet all emotions are derivations of five core feelings: happiness, sadness, ...
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38 views

accurately predicting behavior from initial brain state

so according to mainstream view brains are completely deterministic given initial conditions and knowing all the external input, and free will doesn't exist. so has there been attempts to predict ...
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2answers
67 views

Why do our brains act in such a evil way sometimes that hurts other people?

I have seen some real evil acts. And I almost lost confidence in humanity. Why do we become so evil sometimes that hurts other people? I guess everybody knows the Renaissance novel Les Miserables by ...
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How does intelligence or general cognitive ability vary with level of CO₂?

The cognitive ability of humans is varies with the concentration of CO₂ in breathing air. But how does it vary? A very high concentration causes sleepiness, and sleepiness is a state of reduced ...
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Is Contagious Yawning a Result of Brain Electromagnetic Waves Transmission?

Do there is a possible electromagnetic wave transmission between two individuals' brains that may cause contagious yawning?
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1answer
41 views

Brain capillary density

Is there any data available on the density of capillaries in the brain? Also, I have seen images like this (from Chapter 2 of The Cerebral Circulation, by Cipolla MJ.): This illustrates to some ...
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2answers
44 views

Can thought processes be sensed to happen exactly in the head?

It's common knowledge that humans think with their brains. So it's common to associate hard thinking with head and to seemingly "feel" that it's the head which is loaded when one's thinking. But does ...
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1answer
50 views

Are our human brains programmed as materialistic as one can be?

First of all, not all human beings are materialistic. I strongly believe that. We tend to not be happy with what we have but what we want. We desire for more. There is a saying that says that the ...
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Common latent feature among all “memory techniques”

So I've been delving into "memory techniques" and people who compete in memory competitions(memorizing and reciting a poem in a small amount of time, memorizing a deck of cards, memorizing pi, etc). I'...
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Decussation of Cranial Nerves

Which cranial nerves decussate apart from the few nerve fibers of the optic nerve that do and how to easilly remember the cranial nerves that do? Here is a paper for the Trochlear Nerve But I have ...
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2answers
79 views

What is the state of the art research of the consciousness level for high-level cognitive activity?

Everybody knows situations where activities requiring concentration and high level consciousness can over time become a "background" task. For example: you read a text aloud but think about other ...
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12 views

Why do people have eureka moments of revelation while taking a shower? [duplicate]

What kind of mechanisms are at work to cause creative thinking or revelations during auto-pilot tasks like taking a shower or teeth brushing? This describes it: Incubation period - we are working on ...
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1answer
88 views

When does a human baby develop a consciousness?

Not to offend anyone or anything, but I've been searching up about abortion lately, and all the debate about it, and it got me wondering, when does a baby develop a consciousness? Consciousness - the ...
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1answer
64 views

Mind uploading & its constituents: Theoretically possible?

Is it possible to remove the mind from the rest of the body and have it "alive" somehow as in its former known form? Mind uploading would be computerizing a mind to preserve data, memories and etc. ...
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1answer
66 views

What's the memory capacity of the human brain? [duplicate]

This article, Human brain can store.. claims the memory has a capacity of around 1 petabyte or quadrillion bytes. This other one, What's the memory capacity of the human brain claims the memory ...
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1answer
42 views

Cingulate cortex vs Limbic lobe are they same or slightly different?

I've read the wikipedia article on Cingulate cortex and the article about limbic lobe. Also did web search but it is not clear to me whether they are synonymous or there are slight differences in the ...
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123 views

Supplementary Motor Area or Juxtapositional Lobule Cortex

Harvard-Oxford Cortical Structural Atlas now calls the 'Supplementary Motor Area' the 'Juxtapositional Lobule Cortex (formerly Supplementary Motor Cortex)'. I've looked for papers that explain the ...
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What happens to the brains that are utilized during studies afterwards?

The procedures may vary from country to country, but I'm wondering if they are cremated or otherwise disintegrated.
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1answer
64 views

Visual Cortex percentage

Could somebody help please in providing some research papers or a resource book that states how much the visual cortex occupies of our cortex? I am trying to find some reliable source but I couldn't ...
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1answer
61 views

What information does the connectome actually contain?

I am not a brain scientist but the following question seems reasonable to me. Prof. Sebastian Seung has given a TED talk named "I Am My Connectome". If I understand correctly, connectome is ...
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1answer
173 views

Is there a mindfulness meditation technique that tends to produce gamma rhythms in the brain (and not just the alpha frequencies that are typical)?

This is a follow up to a paper (^) that was cited in a response to one of my past questions here. It was found that experienced Buddhist monks generate a substantial increase in gamma waves on demand ...
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21 views

Can frissons provide an accurate metric to gauge emotional intelligence?

This relates to my other post Frissons on demand. As is stated in the abstract of the cited source below (which discusses voluntarily controlled piloerection), the ability correlates with personality ...
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Concept of Free Will [duplicate]

I was not really sure which stack exchange to post this question, however, this one suits well I am guessing. So assuming that the brain is just a carbon-based input/output calculator, and assuming ...
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2answers
81 views

Cerebellum question

Sorry if this sounds at all like pretentious armchair theorizing(it basically is), but I have a question which I can't really figure out how to search. So, given the resemblance of the cerebellum to ...
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1answer
108 views

Why can't human thoughts be stored in metals?

As metals are good conductors of electricity and they can be charged by the electrical activity of thoughts, why can't human thoughts be stored in metals? Why thoughts cannot be stored in the form of ...
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1answer
216 views

Article about DTI of Autistic Brain

Does anyone know where do I find the article that published this image? Appereantly it was created by a neuroscientist called Jason Cooperrider and it is the tractography of Temple Grandin's brain. ...
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1answer
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What does “The brain has its own language for testing the structure and consistency of the world.” refer to?

The late Dr. Carl Sagan is famous for many different contributions to both scientific research and science education. One memorable line is discussed in Are we really star-stuff from the interior of ...
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120 views

Can the brain be enhanced by adding more neurons?

I was wondering of ways to enhance the brain. Couldn't we add a sort of substance to improve the brain? Will it somehow adapt? The brain should 'wire up' the new substance to the existing one. As ...
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184 views

Can drugs support emotional developement in personality disorders?

Some personality disorders are associated with a degree of emotional blindness or coldness with narcissistic PD being such an example. I wonder whether there are drugs that - in addition to ...