Why does compression of a nerve cause any kind of feeling at all?

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Discussion Overview

The discussion centers around the question of why the compression of a nerve results in any sensation, exploring the underlying mechanisms and effects of nerve compression. The scope includes biological and physiological aspects, with references to electrical signals and nerve function.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant suggests that the sensation may arise because charges in the nerve are pushed away from the compressed area, leading to electrical signals being sent along the nerve.
  • Another participant questions the classification of the topic as either physics or biology, indicating a belief that it encompasses both fields due to the involvement of charges.
  • A request for mainstream references is made regarding the relationship between nerve compression and pain, with a note that compression typically causes numbness or tingling.
  • It is noted that many neurons have mechanosensitive ion channels that may open in response to physical deformation of the cell membrane.
  • One participant mentions that compression may restrict blood flow, potentially impairing nerve function, and expresses uncertainty about whether compression inhibits ionic flow at nerve junctions.

Areas of Agreement / Disagreement

Participants express differing views on the effects of nerve compression, with some focusing on electrical signaling and others on blood flow and nerve function. The discussion remains unresolved regarding the exact mechanisms and effects of nerve compression.

Contextual Notes

There are limitations in the discussion regarding assumptions about the relationship between nerve compression and sensation, as well as the need for references to support claims about pain versus numbness.

k9b4
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Is it because the charges in the nerve are being pushed away from the compressed area, thus sending electrical signal along the nerve?

Why was my post moved from physics forum to biology forum? This question could be classified as both physics and biology as I am asking about charges.

What's the difference between physics and biology?
 
Last edited:
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k9b4 said:
Is it because the charges in the nerve are being pushed away from the compressed area, thus sending electrical signal along the nerve?

Why was my post moved from physics forum to biology forum? This question could be classified as both physics and biology as I am asking about charges.

What's the difference between physics and biology?

Do you have a mainstream reference that suggests the compression of different kinds of nerves can cause pain? Normally that would cause numbness and maybe tingling...
 
berkeman said:
Do you have a mainstream reference that suggests the compression of different kinds of nerves can cause pain? Normally that would cause numbness and maybe tingling...
Yes sorry, that was my incorrect use of the word. I have edited the title*.

My question is: Why does compression of a nerve cause any kind of feeling at all?

*The title was originally: Why does compression of a nerve cause pain?
 
Last edited:
Well, compression of an area will restrict blood flow, which will impair nerve function. I'm not sure if compression will inhibit ionic flow at nerve junctions...

EDIT -- Ygggdrasil beat me to it.. :-)
 
Thanks both
 

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