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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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How action potentials work

At this point, I have a fairly solid grasp on the process of an action potential from some of my own reading. However, I fail to see how sending excitatory signals to a specific neuron can encode any ...
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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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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
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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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Which are the arguments for asserting mental life/consciouness happen only in the cerebral cortex?

I've read many articles / researchs and they are hard to follow. Several times concepts are hard to understand, it would seem certain concepts such as "cognition" are fuzzy terms and they become part ...
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1answer
58 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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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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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 ...
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when is default mode active

AFAIK default mode is important for our well being since as I am concerned one of its functions is to make sense of things we learned, experienced, etc. Here is says default mode is active when ...
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Are scintillating scotomas really caused by cortical spreading depression? If so, how is this known to be true?

I have just read about a visual effect called a scintillating scotoma. Many variations occur, but scintillating scotoma usually begins as a spot of flickering light near or in the center of the ...
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1answer
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What is the human brain made of?

I read an article that stated that the human brain contains 60% fat. Is this fatty tissue structural building material? Or does it just serve as an energy source for the mitochondria? Since our body ...
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1answer
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how to train our brain to always use left part for thinking & deciding things?

how to train our brain to always use left part for thinking & deciding things? How do I not take emotional decisions
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1answer
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How does the brain create original thoughts? [closed]

Since the generation of thoughts requires the coordination of various parts of the brain, how does the brain know which parts to activate to develop unique ideas? Does the brain randomly activate its ...
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Why can't we learn what we don't like?

The school system as we know it, is & has been shaping students to fit the system which they live in and throughout this process, the students are forced to learn(mostly memorize) subjects which ...
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Why does emotional pain sometimes feels like physical pain? [duplicate]

So here's a question from a newbie. I read somewhere that emotional pain can last as long as 20 minutes. Anything painful you feel beyond that is just a result of overthinking. Well whatever it is, ...
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How are tactile pleasure and pain differentiated in the somatosensory cortex?

A recent question here asked about (mostly) how pain and pleasure are differentiated in pathways involving reward/aversion cues. But there was some confusion as to what the question really wanted to ...
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3answers
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The relationship on deja vu, dream and retrocausality?

In quantum physics, there is a topic on something called retrocausality, which addresses whether the future can affect the present and whether the present can affect the past. In terms of deja vu and ...
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How is the human brain evolving?

I came across this article which states that brain takes about 20% of the body's energy. This is quite a lot compared to its size. Somewhere I read that even if this is a lot, this must be an absolute ...
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Converting human's memory into digital data

I am wondering whether converting someone's memory into digital data is possible or not. It may sound ridiculous. However, if chance is not 0 then what kind of studies might be used? What kind of ...
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1answer
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Could we develop a notion of conceivability that would allow us to imagine impossible/inconsistent/illogical things?

There are things that we cannot imagine because they are impossible (like a solution to Russell's set theory, since it is impossible to reach that solution because it is illogical.) Some months ago, ...
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1answer
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Performance of a damaged brain

I have heard stories/reports that if a certain part of the brain (taking care of certain functions) is damaged other parts take over the function of the damaged part. Intuitively this could mean 2 ...
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1answer
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Is low self-esteem, a brain chemical imbalance problem, rather than a personality defect, and can't be fixed by any amount of counselling/self-help?

I am asking this question because I recently observed something within myself:- I think I used to be a Borderliner plus Bipolar. I was very sensitive, and slightest of events will either induce mania ...
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What would happen to the human brain after running out of memory?

According to this answer humans have enough memory to store 300 years of TV shows. However, of course, it is disputable, as storage system would be completely different from storing TV shows (videos) ...
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1answer
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What introductory textbook is available about the corticostriatal brain circuitry?

I want to understand the basal ganglia better. In particular, I want to understand the role of the corticostriatal brain circuitry for non-motor functions, including emotion and cognition. I have ...
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2answers
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The computer model of the brain

I am a computer programmer or computer engineer, and am interested in comparing the brain to a classical computer in some way. How well does this comparison hold up? This is a general introduction ...
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What are the thoughts? [duplicate]

At the neuroscience level, what are thoughts? I mean, are they just electrical synapse through the brain in a recognizable patterns? if so, How are those electrical pulses originated?
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How does the brain learn and execute causal reasoning for short-term and long-term planning?

What does state-of-the-art neuroscience research say about the way the brain learns and performs causal reasoning when it has to come up with short-term and long-term plans in order to achieve a ...
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Negative Rewards(punishment) processing in Human Brain?

Can someone please tell me how negative rewards or punishments are processed in the human brain? Do we have a separate segment to process positive and negative reward and are the positive and negative ...
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2answers
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Are thoughts transferred along with a brain during a brain transplantation?

If I'm transplanted with, e.g., Stephen Hawking's brain, would I start to think like him, or would I remain to think like me? On which, "thinking" ability depends , is it the physical structure of ...
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1answer
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Stroke amelioration

Excessive sugar, like Pepsi, is considered harmful. However, I am wondering if it could be helpful if taken by a victim of stroke during or immediately after a stroke, or somewhat after a stroke? My ...
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Why we do what we aren't allowed to do

Don't touch the red button, or don't touch that chocolate cake while I'm gone. Why is it that we most likely will touch them anyway?
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Temporal and frequency analysis of brain network to study autism disorders

I know it has shown in the literature that autism disorder affects brain network connectivity based on rs-fMRI data (Plitt, Barnes, & Martin, 2015). They have local over-...
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Are cognitive functions strictly divided in the left and right hemispheres? [duplicate]

I often see this kind of picture, claiming the strict lateralization of brain functions. Is this valid? Then, what happens to left-handed individuals? Are their cognitive functions also switched ...
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How much pleasure can brain endure?

As of 2018, is it possible to induce pleasure in humans by some intervention like sending electrical signals? I've read that it's been done on mice. If not, it's quite imaginable that it will become ...
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Proportion of cortex dedicated for vision and hearing

I have read in some websites that the percentage of the cortex devoted to processing visual information is from 30-66% with some claiming even 90%. And compared to that, only about 3% is dedicated to ...
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Why we construct and estimate human brain models? [closed]

Based on clinical data collected using different brain imaging, researchers build a mathematical model of the activity of the human brain like the hemodynamic model (Friston, 2000) that describes the ...
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To what extent is face-detection achieved in peripheral vision?

I'm trying to find out to what extent mere detection of faces (i.e. determining that something is a face, as opposed to recognition of specific individuals) is favored in the central vision vs ...
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1answer
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Is this brain map scientifically correct?

I'm not an expert in neuroscience but always read about information that seems conflicting to me. On one side I hear that the idea of single brain functions localized in specific brain areas is ...
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1answer
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Can a person do things against their own will and be conscious of it at the same time? [duplicate]

I am a firm believer of the principle of free-will, but wanted to see if there was any examples(or case examples) of people knowingly doing things against their own will. I know that we can be ...
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Why do male brains not detect extra “F”

Is there a neuroscience explanation for the behavior in the following experiment? Are there any papers or research conducted to find out why this differentiation happens? Count the number of ...
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1answer
218 views

Which possible methods can be used to determine if a certain part of the brain is active?

The question goes back to this tweet: Julia‏ @JuliaHass I just learned that elephants think humans are cute the way humans think puppies are cute (the same part of the brain lights up when ...
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2answers
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Does the brain's architecture change while growing up?

If we are somehow able to record and store all the neural connection in the brain of a child and also the brain of the same individual when he is old will there be difference between the two ? Is the ...
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2answers
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Why do people like to listen to sad songs?

Why do people like to listen to sad songs? Sadness is not a positive feeling, so people should avoid it, right? Listening to sad songs is like inflicting some pain to yourself just for pleasure. Did ...
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1answer
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Can I read what the person thinking through electrodes or something similar?

First of all I'm not a medical student so I may miss some points here. I know that EOG (electro-oculography) works on the corneo-retinal dipole. The cornea (front of eye) is slightly positively ...
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2answers
83 views

Theorem of uncertainty in cognitive science

Recently, reading one book I have come across such paragraph: ...
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38 views

Why is homosexuality considered “natural”? [duplicate]

Ok, firstly I don't know if this is the right forum to ask this question. Secondly and most importantly I am an ally and a supporter of the community, its rights and for their equality. Recently, I ...
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1answer
31 views

Are there any long term cognitive impairments from prolonged period reduced sleep? [closed]

What are the consequences of chronic lack of sleep? For example, insomniacs are known to sleep less than normal sleeping individuals. I am wondering if there are any long term cognitive impairments ...
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2answers
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What electrical stimuli do brain implants use?

I was reading about artificial eyes and came to think about how the brain works. More specifically, what "signals" it uses in the case of cortical visual prosthetics in blind people? Cortical ...
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Can we identify specific emotions on the basis of fMRI scans?

I am looking for fMRI studies in which the emotional response of a person listening to music is visible in the fMRI scans, paralleled by a retrospective think aloud report of the person describing his/...