Question

Average Site Was the touch detected? (yes/no) % success et Fingertip 1: 2: 3: 4: 5: 6: 7: 8: 9: 10: % ty of the yes yes yes yes yes forearm sr sv c v a ✓ n ✓ Live Ventral 1 2 3 4 5 6 7 8 9 10 % forearm 100% "Lower 1 2 3 4 5 6 7 8 9 10 % og back u r 1 ure mechano receptore responsible he -P sense Table 1b: Volunteer TWO: touch detection back s 100% Average Site Was the touch detected? (yes/no) % success Fingertip 1 2 3 4 5 6 7 8 9 10 % Ventral 1 2 3 4 5 6 7 8 9 % X X 10 X forearm ton Lower 1 2 3 4 5 6 7 8 9 10 % 70% back
SAQ1. Touch Detection Assessment: A. What is the neurophysiological basis for why some regions of the body (or some volunteers) were better at detecting a single touch than others (0.5 marks)? B. What do you predict would happen if you used active movement (i.e., the volunteer moves their finger) versus passive movement (i.e., the examiner moving the divider) (0.5 marks)?

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Answer 1

Depend upon the morphology,density,depth of the skin, touch sensation may vary. Sensity is an function that is based on receptor signaling.so depends upon this criteria the sensation will vary region to region.

Active vs passive movements are the range of motion that are used to provide stimulation in sensory path.It predict the muscle tightness for shorter or prolonged period,tightening the tissue,altering the mechanical properties of collagen in ligamant and shortening of tendons.