Questions tagged [neuroscience]
For questions on the structure and function of the nervous system.
736
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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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7 views
Biochemical responsible for calming someone down from emotional anger [on hold]
I have been trying to find the biochemical responsible for calming someone down after anger, and still haven't found the chemical. I am trying to identify what occurs when the prematernal brain is ...
4
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1answer
38 views
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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1answer
14 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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34 views
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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16 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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1answer
39 views
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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13 views
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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2answers
30 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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1answer
48 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 ...
4
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2answers
148 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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21 views
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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26 views
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'
3
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1answer
53 views
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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12 views
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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10 views
“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 ...
4
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2answers
93 views
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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17 views
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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1answer
30 views
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?
2
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1answer
73 views
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 ...
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1answer
51 views
Are neurons the wrong shape to model neural networks?
Looking at neural networks, each node can be described as a neuron with either several long input wires, or several long output wires.
A neuron, however, has many short input wires (dendrites) and a ...
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1answer
57 views
Mind uploading & its constituents: Theoretically possible?
Is it possible to remove the mind from the rest of the body and have it "alive" somehow as in its former known form? Mind uploading would be computerizing a mind to preserve data, memories and etc.
...
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1answer
34 views
Find volume of lesion mask
I have drawn a lesion mask using FSLeyes on a T1-weighted image for MS patients. Is there tool to get the lesion volume from the mask?
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What activity causes the highest level of brain-activity?
I expect balancing on a tightrope and juggling apples while listening to Mozart would trigger more brain activity than say playing chess, and while there are many ways to measure/define brain activity,...
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79 views
Supplementary Motor Area or Juxtapositional Lobule Cortex
Harvard-Oxford Cortical Structural Atlas now calls the 'Supplementary Motor Area' the 'Juxtapositional Lobule Cortex (formerly Supplementary Motor Cortex)'. I've looked for papers that explain the ...
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1answer
115 views
Can the neurological damage done by alcohol be reversed?
I read online that heavy alcohol consumption can lead to neurological damage, specifically in areas that affect your cognitive performance and memory but what I couldn’t find is if the damage can be ...
3
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1answer
58 views
Publicly accessible database for the Autistic brain under MRI and/or fMRI
American neuroscientist James H. Fallon released many of the images of MRIs from diagnosed psychopaths and was able to identify a pattern when compared to the average individual. Is there a database ...
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44 views
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 ...
3
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1answer
64 views
Myelin and Myelin Sheath
https://medlineplus.gov/ency/article/002261.htm
Why is Myelin used as a term to mean the Myelin Sheath as opposed to the proper term?
It is apparent to me that Myelin is the substance itself ...
2
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1answer
79 views
Comorbidity of Neurodevelopmental Disorders between them and Obsessive Compulsive Disorder and Obsessive Compulsive Personality Disorder
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3416662/
OCD being an anxiety disorder and OCPD being a personality disorder it is entirely possible that these two can be present on the same patient.
...
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114 views
Neurodevelopmental Disorders, Cognitive Function and Causing someone to Learn
Children may elicit, either through active engagement or some feature of their personality or appearance, a response from their environment that might protect them from deprivation-related risk either ...
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19 views
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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153 views
Good neuroscience research blogs
In the field of AI research there are really good research blogs that regularly analyse methods and review papers. Examples that come to mind are:
BAIR blog: The Berkeley AI Research blog
Distill: an ...
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1answer
94 views
Understanding the 'Wiring Catastrophe'
Introduction:
In 'Wiring optimization in the brain'(2000), Dmitri Chklovskii and Charles Stevens
analyse the dependence of the complexity of cortical circuits on the number of synapses per neuron ...
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27 views
How neurons and mind can be related? [duplicate]
As we know neurons are matter . But mind is not matter .You can see a brain but can't see a mind . Why from outside brain is full neurons , but when it's inside you , it starts to create mind, visions,...
4
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59 views
The same neuron sometimes released different neurotransmitters, so how does this affect our interpretation of computational models?
Most studies I see compare firing rate with some observed variable (stimuli or behavior). However, they treat all spikes the same. But neurons sometimes release different neurotransmitters depending ...
0
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1answer
34 views
Why do solutions to problems feel simple (or obvious) once we are given them?
I was watching a video about one of the hardest maths problems even examined in the IMO (International Math Olympiad). And once I was walked through the solution, it seemed so obvious to me, as I'm ...
3
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2answers
72 views
William James “Principles of Psychology” and Brain Plasticity
I am reading William James' "Principles of Psychology". It is clear in his research that he was acutely aware of brain plasticity and the limited capacity for a precise "schema" (ie. static brain map)...
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1answer
33 views
Neurological explanation for differences in what motivates runners?
I have noticed differences between how my friends and I are motivated with regards to exercise, and would like to better understand what is influencing this difference psychologically.
Personally, ...
2
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0answers
18 views
Bipolar Disorder Patient data
Can someone provide me with an electrocardiogram signal of a bipolar patient? I'd like to have a trace obtained in an intermittent period, i.e., when the patient is not experiencing a depressed or ...
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10 views
What are the average dimensions of human Purkinje cells in the cerebellum?
I'm looking for the dimensions, specifically the dendritic tree of the human Purkinje cells. All classical papers such as Eccles, Andersen, Palay Chan-Palay mention dimensions of cat, mouse, rat or ...
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1answer
18 views
How can we know which types of brainwaves is dominated at particular state?
I am a freshman at Neuroscience.
As I learned there are 5 types of brainwaves: Gamma, Beta, Alpha, Theta and Delta, each types have a different frequency range.
So my question is when onserving a ...
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0answers
128 views
Is there a neurological reason why women do not occupy top positions in the chess ranking?
I want to turn arround this question posted on chess exchange where sociological arguments are given to explain why only two of the world's top 100 chess players are women.
Are there neurological ...
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1answer
46 views
Is the hippocampus responsible for storing or creating memories?
I've heard that severe damage to the hippocampus results in the inability to form new memories but still remember old ones. Am I mistaking something? Is the hippocampus responsible for storing ...
2
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1answer
76 views
How much we should trust our brain
Our brain is trained from culture and environment that we're raised in. So we don't control what we're learning until we get to teenage. But by that time our behaviour is already been shaped. This ...
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2answers
46 views
Are personality characteristics correlated with certain underlying features of the facial expressions of a person?
For instance is it possible to determine with some degree of accuracy if a person is ranks high in openness to new ideas by some photos of the person?
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How common is it to include unmedicated patients in first episode psychosis (or any type of psychosis) studies?
Is anyone familiar with this open access study?
Radua, J., Borgwardt, S., Crescini, A., Mataix-Cols, D., Meyer-Lindenberg, A., McGuire, P. K., & Fusar-Poli, P. (2012). Multimodal meta-analysis of ...
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What's the pathfinding algorithm the human brain uses?
I was trying to build a software simulation of people using different pathways in a city to get from point A to point B. I do know the Dijkstra's algorithm and the A* algorithm, but what they do is to ...
