Questions tagged [neuroscience]

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

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12 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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24 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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54 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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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 ...
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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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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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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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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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109 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 ...
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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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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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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 ...
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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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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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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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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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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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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,...
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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 ...
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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 ...
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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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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, ...
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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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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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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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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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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 ...
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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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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 ...
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Do psychiatrists and researchers themselves don't have an idea how antidepressants work?

This question may be seen as an extension of my previous question, here. I was talking to a person online where s/he mentioned that psychiatrists themselves don't have an idea as to how SSRIs work. ...
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Has there been any neuroscientific study of polydactyly?

I have been reading about polydactyly and found that surgery is only necessary in certain cases. It depends on way the extra digit on the hand or foot is attached. For example, central polydactyly (...
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What is a sensorimotor connection in plain English?

I have googled, but haven't found any definition simple enough that I understand. I would appreciate it if you could give me an example as well! Thanks, Jack
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Supposed 'brain training' [duplicate]

The term brain training is nothing new, however how effective is the 'N-back' method, does this work scientifically speaking? There are mixed reviews on this: one claiming it works https://www....
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Anomalous activation of temporal lobes

The result of wakeful EEG shows persistent activation of temporal lobes - high level of delta and theta waves in the left temporal lobe (3 on the scale from -3 to 3) and slightly lower in the right ...
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Are the images in our heads physical?

I can think of a banana in my mind, and I can see it, it's there, but it's not really there at the same time. It doesn't feel physical, but for me to be able to see it, it must be physical, right? Are ...
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How to analyze EDA data collected from mindware?

How to pair event and skin conductance response of data from mindware? Does it need to downsampling? Thanks.
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What information does the connectome actually contain?

I am not a brain scientist but the following question seems reasonable to me. Prof. Sebastian Seung has given a TED talk named "I Am My Connectome". If I understand correctly, connectome is ...
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What sources of randomness does the brain use for sampling?

As an applied mathematician, I have a growing interest in the mechanisms for uncertainty representation and computation in the human brain. In fact, I recently compiled a list of papers on this ...