Questions tagged [neuroscience]

The study of the structure and function of the nervous system and its components.

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45 views

Abrupt movements of birds and reptiles vs. smooth movements of mammals

How can it be explained (in evolutionary and/or neuronal terms), that the spontaneous movements of birds and reptiles are seemingly "abrupt" and not so "smooth": Their spontaneous movements seem to ...
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1answer
4k views

Pathophysiology of babinski sign in spinal cord injury? [closed]

How can we differentiate between upper motor and lower motor neuron lesions on the basis of babinski's sign ?
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1answer
45 views

Neuroscience - A neuron with two types of synapses (electrical and chemical) at the same time

I learn that the nerves from the Peripheral Nervous System can carry signals from and to other organs of the body. I'm wondering if A Single Nerve carries 1) Only chemical signals 2) Only physical ...
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1answer
53 views

How outside signals creates different chemical composition in the brain? [closed]

Scenario A: I am walking down the street and my phone rings. I answer and I am told that my ticket that I registered last week was lucky and I won million EUR. Scenario B: I am walking down the ...
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1answer
88 views

Reference request - Neuroscience of Free Will [closed]

I am a computer science student taking a course on philosophy. My topic of research is on freedom of will and whether it is possible to create a machine capable (or closely) of doing so. I felt that ...
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0answers
38 views

I'm suddenly left handed at 38 [closed]

My daughter is left handed. And I found out in my 20s my grandmother on my father's side was left handed. I have vague memories of someone holding my hand to teach me to write. I am also having a lot ...
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1answer
18 views

Do astrocytes connect and chemically communicate with other astrocytes?

I am building a novel model of neural tissue for the purposes of Machine Learning and am currently trying to unpick the functions of the astroglia. The literature suggests that astrocytes ensheath ...
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1answer
1k views

What's the lowest possible reaction time for the human brain?

I could not find an answer for this question out there so I thought it would be proper to ask it here. Since our reaction time can be increased or decreased by ingesting certain drugs, I could not ...
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1answer
66 views

Charge distribution to neuron connections

How is charge generated by the action potential is distributed to all of the neuron connections? From what I understand the total charge transmitted by a neuron once it fires is same for every neuron. ...
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1answer
33 views

Can we send signals to nerve?

I want to know two things. Can we send a signal to a nerve using external source like electricity? Can we differentiate signals sent from receptors like pain receptors, pressure receptors etc.
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1answer
30 views

A speculative question about sensation

I know this is rather speculative and I am not a biologist, but I have womdered about this for a long time. I have always been able to pinpoint the central line of any part of my body exactly as if ...
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2answers
921 views

Do all nerves in the body end at the tongue? [closed]

I saw this someone but have searched on google to affirm or deny it, but didnt find anything on all nerves ending in the tongue. Please help