Estimation of weights and tensions and apparent involvement of a "sense of effort".
D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008465:Mechanoreceptors; D009132:Muscles / Q000294:innervation* / Q000502:physiology; D005082:Physical Exertion; D012018:Reflex; D013997:Time Factors; D014732:Vibration; D014892:Weight Perception