Questions tagged [neuroscience]

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

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Is there a formal definition for “axon terminal field”?

I would be interested in a formal definition for this term, or at least a paper which describes this notion explicitly (instead of just using the term). Many papers seem to use it, but I haven't ...
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What's the relation between distorted(REM) sleep and creativity?

I was recently listening to Huberman's podcast where he said that disturbed REM sleep causes people to make odd connections and I was wondering if there is any relation between distorted REM sleep and ...
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Funiculus vs. fasciculus vs. nerve

After reading through a bunch of sources, I'm quite confused as to these three terms. Wikipedia suggests that a funiculus is a bundle of axons, and a fasciculus can contain multiple funiculi. On the ...
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How does loneliness impair intelligence?

With the appearance of covid-19 and the measures that many governments have took to decrease the infection rates of their governing populations loneliness has become more common. I myself find it ...
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What is the permanent effect of sleep-deprivation on the brain and its cognitive function?

I know that many teenagers suffer from chronic sleep-deprivation. This varies from country to country, but it is widely known that especially students suffer from this condition. Most have a mild form ...
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Structure of synapse

When we study the structure of the chemical synapse, by default we come across Axo-dendritic synapse consisting of various cell adhesion molecules/receptors etc. (like this). However, I was ...
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Free will and neuron firing

I have been reading a lot about free will and the most recent neuroscience experiments in that field. However, one way question troubles me to which I have never been able to find any study. We know ...
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How does Functional Electrical Stimulation (FES) restore motor functions and non-motor functions in SCI patients

I am an engineer dealing with Brain-Computer Interface, and at the moment, in a clinical context. One area which I came across was rehabilitation for patients suffering from Spinal Cord Injuries or ...
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How does pattern separation works?

I found an article that stated: "Researchers think neurogenesis helps the brain distinguish between two very similar objects or events, a phenomenon called pattern separation. According to one ...
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Surface area in the classic Hodgkin Huxley Model

How can I vary the membrane surface in the classic HH model? I have programmed such a model and now I ask myself how I can change the surface of the compartment, so which parameters I have to increase ...
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What provides regular neuron spikes for internal urethral sphincter to regularly reclench?

This "Scishow" video is about internal and external anal sphincters, its length is just 3:51. The speaker, Hank Green, says: The muscle that keeps things from leaking out of your body, your ...
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Why is a low threshold necessary for generating an action potential?

On page 32 of "Principles of Neural Science," it sates that, "...the initial segment of the axon has the highest density of voltage-sensitive Na+ channels and therefore the lowest ...
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Interpreting FURA depolarization/calcium assay

I did a depolarization experiment that compared a mock-treated cell line with a treated line. One part of the results are easy to interpret: Treatment resulted in lower 350/380 ratios along the length ...
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How does the brain amplify signals without interfering with pattern recognition?

Signals in the brain normally excite neurons only if they are well known, i. e. because synapses pass them on that grew during learning. But even for well-known patterns I could imagine that without ...
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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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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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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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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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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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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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Neocortical potentiation vs slow wave memory consolidation in narcolepsy

Activity in the neocortex of the brain is significantly reduced during slow wave sleep. The general theory is that during that during this period of time memory consolidation occurs. Individuals with ...
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Neuronal mechanisms underlying delusional beliefs about one's thoughts

Are there known neuronal mechanisms that somehow explain phenomena like thought withdrawal thought insertion thought broadcasting i.e. deviating-from-normal experiences and beliefs about one's ...
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Whole brain death diagnosis and false positive

In view of the increasing need for organ transplants( possibly because of the greater ability of the surgeons and physicians to both execute the transplant, prevent a rejection, and/or diagnose the ...
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Functional neuronal units that occupy the same brain region

[Thanks to Bryan Krause's advice, I edited the question.] Definition: Let two functional units be two sets of neurons, A and B, such that the probability of being connected (synaptically or by ...
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Trust after the first 200 milliseconds

In the first 200 ms of meeting someone our implicit / System 1 brain makes a number of inferences (based on age, gender, race, voice, smell among others) to determine whether we ‘like’ the other ...
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Are memories, in the brain, standing on their own?

When I try to recollect a memory, sometimes the analogy with an archive is brought on. There is a huge amount of them, so it is thought, and every time we try to recollect a memory our brain searches (...
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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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How does Emotional Freedom Technique (EFT) work?

There is mounting evidence that EFT, a form of therapy which combines cognitive, exposure therapy along with acupuncture point stimulation is effective - EFT for PTSD question What are the biological ...

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