Questions tagged [neuroscience]

For questions on the structure and function of the nervous system.

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Temperament and Character Inventory (TCI)

What are the main critics to TCI model? What is the consensus on its validity ? Has it any predictive power to detect personality disorders ? Are they any other models that has attempted to fix its ...
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Can Neuralink really be used for memory implantation?

I think you heard about a company called Elon Musk Neuralinnk. The ultimate goal of Neuralink is to achieve human memory implantation. Doctors were prepared to implant the first bionic eye in a human....
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Is there a specific part of the brain that, as far as we can tell, is used for logic?

I am writing a story which includes a surgical procedure to enhance a persons logic. I am looking for a specific part of the brain that, as far as we can tell with decent science, directly influences ...
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67 views

Neurological disorders affecting body language

Are there neurological disorders which do not affect the emotions per se but affect how they are expressed by the body? Say, normally positive emotions are associated with the tips of the lips facing ...
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Is it true that mirror neurons can make a man with an amputated arm feel sensation just by looking at someone else's arm, like Ramachandran said?

In this Ted Talk Ramachandran sais that mirror neurons can make a person with an amputated arm feel sensation, is it true? And if so, why doesn't the brain feel a sensation by looking at someone else'...
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What is the neuroscience behind copying dialect?

So everybody raised in the same area speaks with the same dialect, why is it so? What is the neuroscience behind this phenomenon?
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Is pleasure synonymous to positive reinforcement?

I'm thinking about what pleasure is from the perspective of the integrated information theory of consciousness. As I understand it, according to the appraisal theory of emotions, the orientation on ...
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Calibrate noise dependent on the membrane potential

I would like to introduce current noise into the Hodgkin Huxley model to better represent the natural firing behavior of neurons - now I know that there are several approaches, but I would like to ...
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1answer
41 views

Is there a Brain Mechanism for Reluctance of Studying?

For example, it could be the case that a person has less Acetylcholine, a key hormone that enables/helps to establish connection between neurons, so, the person has to go through more hardship to ...
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How to view or download an open access article from ARVO journals?

I would like to read or download this ARVO Journal's article, but I just cannot find any button on the website with this functionality: https://jov.arvojournals.org/article.aspx?articleid=2139676 I ...
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39 views

Can two neurons stimulate each other?

Is it possible that two neurons stimulate each other in an everlasting two neuron circuit?
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What does it mean if you are in a sleeping state and you hear a sound that your brain is immediately aware of?

When you are in a sleeping state ,i.e.lying in bed before your alarm clock rings, and you hear a noise or a voice that is not too loud and is not continuous but impulsive, and your brain immediately ...
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Is adrenaline rush the real cause behind feelings of “electricity”, “fire”, “heat” or “burning all over” reported in certain religious groups? [duplicate]

Doing my own independent research, I've noticed a clear pattern of religious people reporting feelings and sensations that they usually describe with expressions such as "waves of electricity&...
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Difference between conditioned freezing, shock sensitization to startle and conditioned fear potentiation to startle?

I am reading paper-listed below-that talks about three terms, Conditioned freezing; Shock sensitization to startle; Conditioned fear potentiation to startle. I understand that conditioned freezing ...
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Neuron specialization in the Visual System

Can someone point me to a good resource to explain how neurons in the visual system become sensitive to visual features? I understand that specific neurons fire for things like direction of motion, ...
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What is the neurological basis for the association between Bipolar type 2 and autism spectrum disorder (ASD)?

Bipolar disorder type 2 and autism spectrum disorder (ASD) is regularly seen together. What is the neurological explanation for this?
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Any neuroscience related intelligence theories?

Correlations between biological measurements and intelligence has been made in the past, e.g. blood flow or metrics like cortex size, though are there any specific neuroscience related intelligence ...
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Brain network datasets

I am a student from Computer Science and interested in graph theory. I was looking for datasets for brain networks (structural and functional) for graph analysis. I have found brain image datasets ...
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63 views

How would you explain the relationship between “ideas”, “beliefs”, “mental images” and “thoughts”? [closed]

I'd really like to know how psychology and neuroscience are working with the concepts of "ideas", "beliefs", "mental images" and "thoughts" nowadays. I'm ...
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Are there synapses on other neuron terminals in human brain like in Aplysia

I am referring to Eric Kandel and his experiment on Aplysia where he shows that synapses between a pair of neurons can be modulated by means of a third neuron that synapses onto the terminals of the ...
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Can a student being asked a question trigger a true fight-or-flight response?

I have a professor who, in a lecture, briefly describes the neurophysiology of the "fight-or-flight" response. She states "in the hierarchy of information processing, emotional data ...
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Why do Na+/K+ ion pumps in neurons have a ratio of 3 to 2

As I understand it the resting potential is maintained due to the different permeabilities of K+ and Na+ and in fact at the resting potential the sum of the Na+ and K+ currents is zero. The pump's job ...
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Alternative hypotheses to Hebb's rule

I was reading on wikipedia that there are exceptions to the hebbian rule, and I was curious about the possibilities of other hypotheses of how learning occur in the brain. So I would like to know: ...
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1answer
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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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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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26 views

What are ERP components such as N400?

A lot of research uses ERP, which is time-locked EEG. I am reading about semantic and syntactic anomalies. So when a semantic anomaly occurs there is supposed to be a negative peak in ERP at 400ms. I ...
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Why does mental work cause fatigue?

In Mental Fatigue: Costs and Benefits, Boksem and Tops advance that mental fatigue results from the brain's decision to save energy: https://www.researchgate.net/publication/...
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Progressing Emotional Regulation through the 4 stages of competence

As you activate the parasympathetic nervous system through meditation your overall emotional regulation drastically improves. But as you activate the PNS in this aspect are you accelerating your ...
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42 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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Can I still get involved in psychology/neuroscience with a computer science degree from several years ago? [closed]

In the three years since getting my B.S. in Computer Science I have become more interested in biology again (my original major) and also in psychology and neuroscience. My current job -- which is more ...
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What effect does the size of the soma have on firing characteristics?

For example, cells in layer 5 of the neocortex have a larger soma than do other layers. I'm wondering what the functional difference is between smaller and larger soma. On one hand, I can imagine that ...
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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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Do I report all anatomical regions in a large significant cluster identified in functional connectivity seed-to-voxel analysis?

I am conducting a resting-state functional connectivity seed-to-voxel analysis on the 25 participants from the NYC test-retest dataset using the CONN toolbox with the Posterior Cingulate Cortex of the ...
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How a signal is generated by the brain when we want to move a body [duplicate]

I've read tons of articles about how moving our bodies is going on. BUT I've found some part of topic just IGNORED. ALL authors just pass the part "our brain generates the signal". I have been trying ...
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Why does the Elaboration Likelihood Model not account for truthfulness of the message?

This is a sample problem with the answer I am stuck on: Question: According to the elaboration likelihood model, which of the following does NOT predict whether a message will be persuasive? A....
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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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How are neurotransmitter receptors discovered?

Many neurotransmitter receptors are known, for example 5-HT2a, Mu, NMDA, and so on. How have these receptors been discovered?
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What is actually happening with neuron during refractory period?

Sorry for a very rookie question. I've got an interest in spiking neural networks and therefore I started learning about different neuron models like Leaky integrate-and-fire, Izhikevich, etc. But ...
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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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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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recommendations for good books focusing on the reward system, motivation and addiction

As the title states, I would like to get recommendations for some good reads about the brain's reward system, motivation and addiction. In particular I'm looking for a book that assumes no ...
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Why are the sensations from different senses perceived joint? [duplicate]

Why are all the sensations from different senses all perceived joint and not everyone separately? Obviously, all the sensations are in the same physical classical system, if not, when we die, ...
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to electrophysiologists, where is your electrode?

how do you know where is your electrode in the brain? Whether you're in the soma, axon, its terminal, dendrites - wouldn't it change your signal (and how)? What happens if you are recording from a ...
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Long term effects of speaking & reading aloud while cutting yourself off from the auditory input

What are the long term effects of reading and talking out loud and while you can't hear the actual sound? Reading aloud increases your memory retention via the the production effect. But that ...
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Long term effect of masturbation on Estrogen receptors

I was writing an article on masturbation and was doing some net based research. I saw on a paper (Phillips-Farfán et al. 2007) that frequent masturbation increases estrogen receptors in the brain. My ...
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Surgical implications of a fallacy in infering histology and morphology through a 1.5 Tesla MRI of a brainstem tumor

What would the surgical implications of a fallacy in infering histology and morphology of a brainstem tumour be? I am interested mainly in the sequelae in the sensory, motor and cognitive functions. ...
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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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Synchronization of perception of sensory information

I am not an expert (actually I am not even psychologist/neuroscientist or anything like it).My question is: Since light and sound comes to, respectively, our eyes and ears at different times and "...
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Minimum constant neuron firing rate

Please forgive what may be an elementary question for many of you. I am trying to understand the range of firing rates in an idealized neuron. I understand what governs the maximum firing rate of a ...

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