Questions tagged [neuroscience]

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

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11 views

What is the size, volume, dimensions etc. of the central lateral nucleus in the anterior intralaminar thalamus in humans?

I have been searching extensively on the internet and journal articles for the size, volume, dimensions, etc. of the central lateral nucleus in the anterior intralaminar thalamus in humans but have ...
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1answer
59 views

How is Pain Subjective and Different from Nociception

So pain is the sensory feeling that tells indiviual that something bad at some part of the body has happened. What I fail to understand is how is pain subjective? If we have touch receptors in the ...
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Is there any correlation between conection and function?

I have been searching why different functions exist in even a similar structure cortex. The first reason is differences in cortical neuron density. The neuronal density contour plot (Fig. 1D) reveals ...
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1answer
26 views

What has changed in your brain after electroconvulsive "therapy" (ECT)?

From this Wikipedia article: Electroconvulsive therapy (ECT), formerly known as electroshock therapy, is a psychiatric treatment in which seizures in the brain (without muscular convulsions) are ...
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A new kind of optical illusion?

By accident, I stumbled over this optical illusion: It is not a strong one, and maybe you don't experience it, but I see the size of the circles in the second last row decrease from left to right. I ...
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3answers
618 views

Does the mind create the body?

Everything we perceive is through the 5 senses. That means the body which is perceived through sense of feeling and seeing is also formed as an image in mind or brain? Is it correct that it is either ...
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1answer
95 views

Is unconsciousness actually superior to the conscious mind?

In Blindsight by peter watts, the author mentions something called a "neurological bureaucracy", in which the conscious mind has little purpose other than acknowledging what has already been ...
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24 views

Difficulties in recollecting memory, when execution speed of an action is slow

I learnt to solve Rubik's cube 2 - 3 years ago, I used to practice once in a while, I can solve Rubik's cube within a minute. One day, I went to my uncle's house, my nephew had a Rubik's cube, I ...
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1answer
221 views

What are the factors that make the membrane more permeable to Potassium ions than Sodium or Chloride (or any other ions)?

I'm just into my first week of Neuroscience and reading about membrane/action potential. It is my understanding that when the membrane potential changes, it is more K+ ions move across the membrane ...
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Function of the Left Medial Prefrontal Cortex

I am searching for a specific (as specific as is currently known) region of the brain that has a known(?) large role in deductive and inductive reasoning. My research has narrowed me down to the Left ...
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1answer
68 views

What degree of control do we have on eye movements?

When something "new" and "interesting" enters our visual field it can usually happen that our eyes move toward the new target. How "intentional" and "controllable&...
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2answers
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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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1answer
132 views

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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1answer
59 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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1answer
68 views

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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1answer
54 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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154 views

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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1answer
26 views

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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21 views

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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1answer
55 views

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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1answer
129 views

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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70 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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64 views

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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33 views

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
139 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
66 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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2answers
49 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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1answer
52 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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2answers
940 views

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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45 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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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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31 views

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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1answer
380 views

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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58 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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1answer
49 views

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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2answers
245 views

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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1answer
32 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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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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1answer
50 views

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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739 views

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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1answer
56 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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87 views

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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28 views

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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27 views

Testing Multilayer Perceptron [closed]

The following script is from Trappenberg's Fundamentals of Computational Neuroscience and is used to test a perceptron's robustness against noise. However, how would one alter it to test the output ...

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