Doctors Lounge - Neurology Answers
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Forum Name: Neurology Topics
|anonperson - Thu Aug 12, 2010 11:39 pm||
I read an article tonight on Wikipedia about proprioreception. I have a question for you. When my friend urinates, she notices every motion and action that occurs. She's aware that she's urinating. She closes her eyes when she does this and notices everything she does-- she knows her abs constracted, she sees (meaning she pictures in her mind automatically) her external genitalia and senses urine moving through her urethra when she urinates, etc... When she wipes, she knows where her hand is and that she's doing this. She sees a picture of everything that she's doing, knows what muscles are moving, etc... when this happens. Is this normal and is this occurring because of proprioreception and kinesthesia?
|Dr.M.Aroon kamath - Fri Aug 13, 2010 11:19 pm||
It is not 'just' proprioception and kinesia, but a lot more is involved.
Let us see the sequence.
one 'feels' the bladder fullness(proprioceptors+visceral pain receptors),
'decides'(higher centers) to go to the toilet, and
feels 'hot'(temperature receptors) urine flowing in the urethra, and after voiding, 'decides' to pick up a toilet tissue,
'knows' where to locate it,
'touches' it(touch receptors),
comes to 'know' that it is indeed a toilet paper(higher centers),its 3-D shape, size, 'temperature' (temperature receptors/free nerve endings), dryness,
'decides' how much 'pressure' is needed to 'pick up' the toilet paper(pressure receptors), its required length(higher centers),and then 'decides' to wipe or not to (higher centers) and finally 'decides' to throw it into the toilet and 'to flush', and finally 'decides' it is time to come out of the toilet.
As you can see, it is obvious that a lot of other sensations and higher centers are involved. And by the way, without a healthy cerebellum watching over every one of these moves, the aforementioned 'simple' acts will cease to be 'simple' any more. Proprioception is only a part of the act.
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