Questions tagged [neuroscience]
For questions on the structure and function of the nervous system.
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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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How is a “mapped” touch sensation felt in the affected location?
The post, "How does the brain project pain on to a particular part of the body?" explains how the nerves end up in a body map in the primary somatosensory cortex, and that:
Peripheral sensory ...
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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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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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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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49 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 ...
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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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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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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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1answer
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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
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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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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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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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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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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1answer
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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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2answers
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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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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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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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1answer
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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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3answers
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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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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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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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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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2answers
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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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1answer
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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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1answer
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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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1answer
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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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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 ...
