Questions tagged [neuroscience]

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

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What is an “Alternative Sensation”?

As far as I know, alternative sensation it's a sensation to distract people from the original stimuli, for example when you have to get an injection, the nurse will pinch you in the other arms so your ...
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35 views

Distribution of dendritic spike generating ion channels on the dendritic tree

Is there evidence that dendritic spike generating ion channels are distributed unevenly on the dendritic tree, with higher density near the branching points of the tree than along the unbranched ...
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423 views

What is the energy cost of an action potential?

As I understand it, ions flow down their electrochemical potentials through ion channels during a neuron's action potential. Otherwise, ion pumps work to restore and maintain the resting membrane ...
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47 views

Can action potential generating ion channels only be understood as assemblies of membrane proteins (and not as single proteins)?

I always believed to have roughly understood how voltage-gated ion channels and the creation of action potentials work: as and by single (or non-interacting groups of) membrane proteins, that behave ...
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1k views

Least painful way to die

There is a lot of talk about inhumane treatment of animals and how we don't kill them in the proper way. I wonder how much research is done on this subject. What is the overall least painful way for ...
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175 views

Are there axon branches that go up to cortex layer 1 and spread there?

I found the following pictures of axon trees: source source (axons are red) but didn't find a concise answer to the following question: Are there axon branches that go up to cortex layer 1 and ...
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34 views

Distribution of synapses of CA1 neurons

In the Wikipedia article on dendritic spikes I read: In the hippocampus, the CA1 neurons contain two distinctive regions that receive excitatory synaptic inputs: the perforant path (PP) through ...
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272 views

How do neurons receive the ions needed for creating electrical pulses?

I really wonder how ions are transported into the brain and the neurons for creating electrical potentials - how do ions get from our digestive system to the neurons? Or are the ions just freely ...
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46 views

Distribution of sodium–potassium pumps

How are sodium–potassium pumps distributed over the membrane of a neuron? Where are the most, where are the fewest? Or does this dependent on the type of neuron? Are there known and understandable ...
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53 views

Why is there no solid evidence (histological, fMRI) that the vestibular hair cells of the inner ear contribute to 53% of the respiratory drive?

There are these papers which strongly imply that the inner ear hair cells, and not the medulla, is primarily the driving factor in the CO2 drive reflex https://www.ncbi.nlm.nih.gov/pubmed/21130842 ...
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190 views

Evolutionary advantages of gyri

Sulci and gyri are complementary views on the very same brain-anatomical phenomenon (Note that there is the named concept of gyrification, but not of sulcification, but it's the very same process.) ...
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Parts of the brain pivotal for maintaining consciousness

From an answer to another question (on conscious experiences by coma patients) I have learned that no conscious experiences, complex thoughts, or complex emotions can occur when one is in coma (...
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204 views

How many synapses are there in the different target regions of a typical cortical pyramidal cell?

I found the following pictures of axon trees: source source (axons are red) but didn't find a concise answer to the following question: How many (in relative terms) branches terminate and how ...

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