Questions tagged [neuroscience]

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

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14 views

True activity maps of the brain

In a video on the effects of music on the brain Oliver Sack's brain is shown when listening to Bach as opposed to listening to Beethoven: Jokes are made from the off: "Sorry, Beethoven, there's not ...
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42 views

Could bioinfomatics explain consciousness?

There's a theory that consciousness is the result of information processing. Many speculate based on this that the brain is conscious because it is processing information. If this theory of ...
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15 views

What characterizes Grossberg's resonances?

Following Bryan Krause's advice I tried to be more specific and picked as one specific neural theory of consciousness Stephen Grossberg's Adaptive Resonance Theory in which a specific group of ...
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47 views

Which characteristics of neural activity patterns underlie conscious experience?

Which specific characteristics of neural activity patterns are unique for the cortex and neocortex as the presumed "seat of consciousness" and can only be observed there? Activity patterns having ...
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Neocortical potentiation vs slow wave memory consolidation in narcolepsy

The neocortex of the brain is significantly depressed during slow wave sleep. The general theory is that during that during this period of time memory consolidation occurs. Individuals with type 1 ...
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Resources for learning Advanced Neuroscience

I am very interested in learning at an high level: How neurons send signals to each other Activation sites of neurons The exact process of signal transmission Dopamine and other neurotransmitters ...
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18 views

Retinotopic mapping to higher visual cortex

I know visual stimuli from retina presented in Cartesian coordinate is mapped to V1 as a form of polar coordinates. Wikipedia, Scholarpedia But I wonder whether this spatial representation in polar ...
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29 views

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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recommended textbooks for the basics of neuroscience

should I read an a-level biology textbook to grasp the basic of neuroscience to be ready for uni or are there better textbooks just for the very basics
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36 views

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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Applying psychoactive drugs locally

I wonder if there are approaches to apply psychoactive drugs (more) locally, e.g. by drug carriers. Usually psychoactive drugs are taken orally/enterally and thus flood the brain unspecifically: each ...
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Density maps of neurotransmitter systems

Are there density maps for specific neurotransmitters that I can have a look at? By density map I mean a map that indicates how the somata of X-releasing neurons are distributed how the somata of X-...
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How well is biofeedback understood?

From an answer to the question Research suggesting conscious control over brain region activation? I have learned: »[S]ubjects become better at up-regulating or down-regulating activation in ...
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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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29 views

Principles of grouping neurons

This is an overview question. I wonder which principles of grouping neurons into higher units are there, and which principles I have overseen. neurotransmitter systems: all neurons that release or ...
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What can coma patients report about their experiences - if anything?

Coma is correlated to a significant inactivity of the cerebral cortex and the reticular activating system, while other parts of the brain - e.g. the limbic system - might still show considerable ...
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24 views

Neural correlates of pleasantness and unpleasantness

There are some basic cases of stimuli that are typically experienced either as pleasant or unpleasant, e.g. the major third as opposed to the tritone. Assuming that there are different processes ...
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31 views

Functional vs. synaptic connectivity

I used to believe that connectivity is nothing but synaptic connectivity and thus a long-term concept: synapses grow and synaptic strengths change on rather large time scales. But recently I found ...
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33 views

Neurotransmitters by neuron types

I'm looking for a concise overview table of all types of neurons (whose number is at least in the hundreds) indicating which neurotransmitters they use pre- and post-synaptically (of which there are ...
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563 views

Predicting the individual effects of psychotropic drugs

https://www.ncbi.nlm.nih.gov/m/pubmed/23796468/ I have searched the national library of medicine but I could not find any papers about predicting both the therapeutic and adverse effects on the ...
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Are memories stored as patterns of chemicals/emotions?

Lately, I (as someone with no experience or prior knowledge in the topic) have been thinking about...thinking. The part that intrigues me the most is memory. As a computer-y type person, I tend to ...
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23 views

Does Focusing on anything makes Nerve Impulse Conduction speed alter?

I was searching on the net but didn't find anything related. So, does focusing on something or thinking hard alters the speed of our nerve impulse conduction? If yes, does it increases or decreases?
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Is gliosis the same as glial activation?

This also applies to astrogliosis and astrocyte activation. I've seen them referred to as both the same thing as as different things. For example, Saito et al. (2016) state: Many kinds of brain ...
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50 views

What is the brain doing when someone tries to solve a physics or math problem that they can’t make any progress on?

Is their brain actually working or is it day dreaming and not functioning if they’re staring at a physics problem and not capable of making any progress on it? When a student who can’t come up with ...
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How many different synapses can an axon form? How do they differ?

It is estimated that the in the human brain there are about 100 billion neurons. With thousands of synapses for each of them, the total number of synapses is over 100 trillion. Yet each neuron has ...
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Does speaking to self, use different area of brain as opposed to speaking to a person? [duplicate]

When speaking without the intent of communicating, but just to ones self or reading to ones self. Does this use a different area of the brain as opposed to speaking to a person, or even a device such ...
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57 views

How does our brain sense the passage of time?

How does our brain sense the passage of time? What is the mechanism? I am not asking here about memory. I have searched about it on the internet. https://www.scientificamerican.com/article/your-brain-...
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Is what psychologists define as subconsciousness proven in neuroscience and can the psychological subconsciousness be visualized by neuroscientists?

We read phrases like The subconsciousness makes up 90% of our brain. The subconsciousness makes up 95% of our brain. The subconsciousness can be influenced by hypnosis. I have yet to see a study in ...
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Is the approximation of the Medial Frontal Gyrus in the region of the Dorsolateral Prefrontal Cortex?

I'm wondering if the MFG is located in the region considered the DLPFC?
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What is receptor tonic activation?

From Long-term administration of the dopamine D3/2 receptor agonist pramipexole increases dopamine and serotonin neurotransmission in the male rat forebrain: The sensitivity of postsynaptic D2 ...
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Triptans and SSRIs

When talking about triptans used for migraines such as Zolimitriptan, such drugs are selective serotonin receptor agonists. SSRIs, as their function states, are Selective Serotonin Reuptake ...
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Strange synchronized brain pulses on EEG using OpenBCI Cyton board

I recently received an Open BCI headset, and have been experimenting with it. One interesting is my brain gives off very regular pulses. My wife tested the headset too, and she also had these pulses....
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35 views

Meaning of “projection” and “to project” in neuroscience

What is the exact meaning of the term projection and the verb to project in neuroscience? I haven't found any neuroscience reference book or dictionary that gives a definition, although those terms ...
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How is a memory lost?

Firstly, I have an incredibly rudimentary understanding of how neurons interact etc. My understanding of memory representation is that it's a group of interconnected neurons that fire in some ...
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25 views

How many synapses are there in a typical efferent somatic nervous pathway?

In Wikipedia page, it explains: The basic route of nerve signals within the efferent somatic nervous system involves a sequence that begins in the upper cell bodies of motor neurons (upper motor ...
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does the fact that Psychology Today take neurolinguistic programming seriously delegitimize the magazine?

According to Wikipedia, Neurolinguistic Programming is a pseudoscience and dismissed by most experts. However, Psychology Today, a popular magazine, appears to not thoroughly reject it. Does this fact ...
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Does every neuron has a specific neurotransmitters for receiving and sending?

I'm new to this field so if I have basic mistakes please correct me. Iv'e read that each neuron can manufacture just 1-2 neurotransmitters, and from what I understand only these are released from his ...
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48 views

what causes an action potential to propagate exactly and why should it propagate?

Hello I am taking a neurophysiology course and learned about the action potential and that it propagates in one direction from axon hillock down along the axon. I understand that action potential is ...
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56 views

Mechanism for deleting old memories

Do we have any mechanism for deleting neuronal connections? That is, if I learn a better version for doing something, I assume the brain will create a new neuronal connection, and we will use this ...
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160 views

What exactly happens to brain during anesthesia

While anesthesia is given to a patient what changes in the chemistry of brain happens. Which part of the brain is affected by the medicine which causes anesthetic effects. Can anesthesia be ...
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Decussation of Cranial Nerves

Which cranial nerves decussate apart from the few nerve fibers of the optic nerve that do and how to easilly remember the cranial nerves that do? Here is a paper for the Trochlear Nerve But I have ...
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What happens neurologically and chemically when an individual is confused?

For example, trying to understand a mathematical problem and its solution, or abstract reasoning, but in the process get lost even have no clear idea of what part is 'not understood'
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What is the state of the art research of the conscienceness level for high-level cognitive activity?

Everybody knows situations where activities requiring concentration and high level consciousness can over time become a "background" task. For example: you read a text aloud but think about other ...
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Why do people have eureka moments of revelation while taking a shower? [duplicate]

What kind of mechanisms are at work to cause creative thinking or revelations during auto-pilot tasks like taking a shower or teeth brushing? This describes it: Incubation period - we are working on ...
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“Golder standard” RNA-seq datasets for neurodegenerative diseases

What's your favorite and/or "gold standard" RNA-seq datasets for neurodegenerative diseases? I come from the field of computational cancer genomics where there are some datasets that are well-known ...
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Would you classify confusion as an emotion?

I'm writing a short essay on emotions and I stumbled upon a few references of confusion being an emotion but no solid exclusive research results focusing on confusion as an emotion. If it isn't, what ...
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When did dyslexia emerge as a neurological difference?

I am wondering if dyslexics have one common ancestor? And when did dyslexia emerge as a neurological difference?
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Neuralink in depression treatment

In this article there is a statement that Neuralink can help people with Parkinson’s disease, epilepsy, and depression by promptly sending electric pulses into the areas responsible for their ...
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How do we know brain Is not involved in knee reflex?

How do we know that compressing the knee generates a feedback signal that makes the leg extend even before the signal reach the brain?
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Are normal external stimuli still processed by the brain during a hallucination?

I was wondering if hallucinations could radically override real external stimuli. After all every sensory organ responds to external stimuli, but when a hallucination occurs, I suppose, the external ...