Friday, April 15, 2011

Psychophysics: Dual-point Touch Distinction, Results

Results:
The results of our experiment were interesting in that different parts of our subjects’ bodies reacted significantly differently to the dermatome test. Our team noticed that parts of the test subjects’ bodies that had fattier tissue reacted required for the dermatome to be spread out more before dual-point touch recognition was achieved. For example, as this graph shows, the cheek and back of lower leg, parts of the body that contain more fat, required a wider dermatome distanced (on average 8.5 mm) in order for the subjects to distinguish dual-point feeling. Parts of our subjects’ bodies with less fat content, such as the tip of index finger and tip of thumb recognized dual-point touch almost immediately.

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