Questions tagged [neuroscience]
For questions on the structure and function of the nervous system.
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Am i manipulating my nerves? If so, what is its function? [closed]
Hey all I'm not exactly sure if this is the right place to discuss this matter but here goes .To make a long story short I can induce this sensation within my body as well as direct it to different ...
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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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1answer
23 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
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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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1answer
35 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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26 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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2answers
25 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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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
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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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2answers
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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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1answer
28 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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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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1answer
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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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1answer
43 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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3answers
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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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0answers
25 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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19 views
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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1answer
47 views
Energy supply to brain
I wonder if the energy delivered to brain per unit time to maintain brain processes is limited and fairly constant? Is all provided energy fully used?
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Which area in the brain has the highest number of synapses?
Which area in the brain has the highest number of synapses or connections? I couldn't find any reliable link on the internet.
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1answer
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Can eye tracking be used as a form of biofeedback?
I'm an occasional meditator and I've noticed that conceptual thought often produces eye movements, and I'm curious if anyone has tried using eye movements as a form of biofeedback. The Muse headset ...
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1answer
36 views
Where to find information regarding the effect of ion concentration in the brain on behaviour?
Hopefully this is the right area. but for some background, for a school project I'm currently trying to design a medically accurate zombie. I have half a semesters knowledge of basic physiology, and ...
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Do weak spatial memory and good creative thinking are related?
Is there a correlation between weak spatial memory and good creative thinking?
This seems to be contradictory, because if you look at the history, world famous chess player had good memory.Can ...
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What happens to a nueron on a cellular level when stimulated by an electrode?
Considering Elon Musk's new Nueralink, the original Utah Array, and what happens to an individual nueron with long term potentiation, what happens to a nueron on a cellular level (and consequently ...
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Is a New Software Library to Simulate Natural Processes like Hunger Needed?
This sort of dovetails off a question I asked on the AI Exchange: Is There A Need For Stochastic Inputs To Mimic Real-World Biology And Environment?
I figured this site would give more insight on ...
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1answer
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Extra-classical receptive fields are surprising, but retinal ganglion receptive fields are not. Why?
Rao and Ballard (1999) start their paper by stating that extra-classical receptive fields, which exhibit the phenomenon of end-stopping are difficult to explain. They show that in an idealized ...
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Has a psychology of addiction been developed as a theory?
I am interested in the Alcoholic's Anonymous approach to treating addiction to alcohol and I am wondering if the significant advances in both psychology and the biological study of physiology have ...
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Out of body experience tests. How to contact scientists? [closed]
I am 30 year-old man with cerebral palsy. Somehow that and one antispastic drug (baclofen) turned me into a vivid dreamer and out of body experiencer. I am not a believer, quite the opposite because ...
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What determines whether a monoamine neurotransmitter is recycled or broken down by MAO?
When a neurotransmitter detaches from the receptor and is returned to the neuron via the transporter, what are the primary factors that influence whether that molecule is re-stored in a vesicle by ...
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Understanding the transition from integrated form to ODE form of neuron models
I'm trying to convert a fairly complicated neuron model from integrated form (a form of the spike response model) to ODE form for use in the BRIAN simulator.
The BRIAN simulator requires neuron/...
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How does the body respond to having excess levels of neuronal, not synaptic, serotonin?
If a person consumes large amounts of 5-HTP or SAM-e resulting in elevated serotonin levels in their synaptic vesicles, how is this excess offloaded? What is the average rate of clearance?
All the ...
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1answer
53 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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Can one neuron denrdite be involved in different memories?
It's clear that neurons are involved in whatever memory. Suppose I see the image of a bird taking off over and over again.
The image becomes imprinted in my memory. So when I think about this ...
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In extremely stressful or high-pressure situations, how can people remain calm and complete the task at hand proficiently?
Interested to see studies completed regarding the question asked. Considering the question, there are two situations in mind.
Where the particular stressful event is of a very short timespan, ...
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Non-polar hydocarbons in phospholipid bilayer
I read that the phospholipids in many cell membranes (I am referencing neurons specifically) have a non-polar hydrocarbon tail and a polar phosphate head. Regarding the non-polarity of the hydrocarbon ...
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Why do people suicide? [duplicate]
No, I am not talking about user suicide. I am talking about actual suicide. Isn't the fear of death naturally so big that people couldn't, but how do they? What would be tormenting them so badly that ...
