4 ms·

Is that really true? Anecdotally, I have no trouble keeping track of where my arm is when I have a coat and gloves on :) I wonder if there's a side effect of a

Is that really true? Anecdotally, I have no trouble keeping track of where my arm is when I have a coat and gloves on :) I wonder if there's a side effect of anesthesia that inhibits the body's kinesthetic sense. https://en.wikipedia.org/wiki/Proprioception#Proprioception_and_kinesthesia https://en.wikipedia.org/wiki/Proprioception#Proprioception_...

ad404b8a372f2b9 5y ago
A quick google search says muscles are the primary receptors in humans, before it was believed the joints played that role. From my experience with anesthesia I reckon it's a little bit of everything, with the sensation of different organs being weighed differently in the final estimation. Unless you're in a vacuum as suggested in another comment I don't think you could draw definitive conclusions on the role of the skin from wearing a coat, the air flow might be mostly prevented but the weight and friction of your coat over the top of your arm as you move would be essentially the same input.
- camtarn 5y ago
  I think that linking skin sensations to proprioception is pretty dubious. Think about walking in a high gale. The air will be pressing your outer layers to your body in a way that adds extra 'weight', but there's not even the slightest sensation of phantom movement in your limbs. Maybe it's a very low-weighted input, but I very much doubt proprioception is 'heavily based' on it as you said earlier.
  - ad404b8a372f2b9 5y ago
    You don't get phantom movements when you get a deep tissue massage yet the muscles are very much involved. There is also literature on the role of the skin in proprioception in humans. That being said, heavily might be overstated, I wasn't trying to claim an authoritative view on the matter, only reporting what I felt while anesthesia was wearing off.
    - camtarn 5y ago
      Hm, yeah, that's a fair point.
kayodelycaon 5y ago
My antipsychotic causes this problem severely enough I have difficulty placing my feet correctly the first few hours after I take it. (Meaning I fall really easily.) I take additional medication (Benadryl, surprisingly) to counteract a lot of neurological side effects like this.
- bloopernova 5y ago
  Do you know how Benadryl counteracts that effect? That's fascinating! (I hope you don't mind me asking, you're not a research subject and I respect that you may not want to discuss it)
  - kayodelycaon 5y ago
    Always happy to discuss it. From what my psychiatrist said, Seroquel messes with histamine channels in a way that Benadryl counteracts. From personal experience Allegra does not have this effect.
jml7c5 5y ago
It could be one input used to correct/fine-tune awareness, but I'd be surprised if it's a primary one. Incidentally, there's a good article (plus embedded videos) on impaired proprioception here: https://theconversation.com/proprioception-our-imperceptible-6th-sense-150775 https://theconversation.com/proprioception-our-imperceptible...
thaumasiotes 5y ago
>> Proprioception is heavily based on the flow of air against our skin and hair. > Is that really true? No, it isn't true and it cannot even theoretically be true. There's nothing about air currents that suggests a particular location in space. When the wind changes, nobody gets confused about where they are.

ad404b8a372f2b9 5y ago

A quick google search says muscles are the primary receptors in humans, before it was believed the joints played that role. From my experience with anesthesia I reckon it's a little bit of everything, with the sensation of different organs being weighed differently in the final estimation. Unless you're in a vacuum as suggested in another comment I don't think you could draw definitive conclusions on the role of the skin from wearing a coat, the air flow might be mostly prevented but the weight and friction of your coat over the top of your arm as you move would be essentially the same input.

camtarn 5y ago
I think that linking skin sensations to proprioception is pretty dubious. Think about walking in a high gale. The air will be pressing your outer layers to your body in a way that adds extra 'weight', but there's not even the slightest sensation of phantom movement in your limbs. Maybe it's a very low-weighted input, but I very much doubt proprioception is 'heavily based' on it as you said earlier.
- ad404b8a372f2b9 5y ago
  You don't get phantom movements when you get a deep tissue massage yet the muscles are very much involved. There is also literature on the role of the skin in proprioception in humans. That being said, heavily might be overstated, I wasn't trying to claim an authoritative view on the matter, only reporting what I felt while anesthesia was wearing off.
  - camtarn 5y ago
    Hm, yeah, that's a fair point.

kayodelycaon 5y ago

My antipsychotic causes this problem severely enough I have difficulty placing my feet correctly the first few hours after I take it. (Meaning I fall really easily.) I take additional medication (Benadryl, surprisingly) to counteract a lot of neurological side effects like this.

bloopernova 5y ago
Do you know how Benadryl counteracts that effect? That's fascinating! (I hope you don't mind me asking, you're not a research subject and I respect that you may not want to discuss it)
- kayodelycaon 5y ago
  Always happy to discuss it. From what my psychiatrist said, Seroquel messes with histamine channels in a way that Benadryl counteracts. From personal experience Allegra does not have this effect.

jml7c5 5y ago

It could be one input used to correct/fine-tune awareness, but I'd be surprised if it's a primary one. Incidentally, there's a good article (plus embedded videos) on impaired proprioception here: https://theconversation.com/proprioception-our-imperceptible-6th-sense-150775 https://theconversation.com/proprioception-our-imperceptible...

thaumasiotes 5y ago

>> Proprioception is heavily based on the flow of air against our skin and hair. > Is that really true? No, it isn't true and it cannot even theoretically be true. There's nothing about air currents that suggests a particular location in space. When the wind changes, nobody gets confused about where they are.