Receptor Physiology

How to test Two-Point Threshold?

Using Calipers to measure the distance and accuracy of 1 vs. 2 point tapping

Where is Two-Point Threshold testes?

Finger, Forearm, Palm, Neck/Back

What are the expected results of Two-Point Threshold?

In fingertip the distance will be super small, but in the neck/back the distance will be greater

Why do the results of Two-Point Threshold happen?

Fingertips have more mechnorecpetors then the back and are sensitive to stimuli

How to test Tactile Localization?

Taking a marker to point to section and patient must point to where touched and measure the distance

Where to test Tactile Localization?

Finger, Forearm, Plam, Neck/Back

What are the results for Tactile Localization?

Finger more accurate and neck less accurate

Where to test Touch Adaption?

Forearm

How to test Touch Adaption?

Putting a coin on forearm and record time patient can no longer sense coin, then add three more coins and repeat

What are the results from the Touch Adaption test?

1 coin= 40 seconds, 4 coins= 20 seconds

How to test Temperature Adaption?

3 buckets of water 1 room temp, 1 cold, 1 hot and place 1 hand each in hot and cold then place in room temp and describe sensation

Where to test Temp Adaption?

Hands

What are the results of Temp Adaption test?

Cold hand feels burning hats, and Hot hand feels freezing cold