magic wrote:
I can touch my nose with eyes closed (people with proprioception impairments often have problem with this test).
I have no problem with that test, either. Maybe the test is useless? I find a better indication of the problem is to close my eyes, bend both elbows and then try to touch my fingers together a foot or so in front of my face. I usually miss by an inch or two.
I experience all of the other factors you mentioned, and usually sleep with my hands between my knees. I think proprioception may also be a driving force behind the leg-movement stims I do when I'm sitting at a desk for a long time, as the movement helps to reintegrate my body sense. When riding my motorcycle for any sort of distance on the highway I lose awareness of my arms. I can still steer and throttle because I can apply a differential force to the handles just using my wrists, but it feels like my hands are floating in space and not really connected to me. The proprioception returns when I get off the highway as I have to use my arms to support my upper body weight (it's a racing bike).
Something that really helps with limb proprioception is to wear something tight. I have a long-sleeve rash-guard (lycra shirt intended for surfing) that really works well for this.
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