bls System Two POINT DISCRIMINATION The distance at which an individual can diff
ID: 3522217 • Letter: B
Question
bls System Two POINT DISCRIMINATION The distance at which an individual can differentiate one point from two on different areas of the skin due to the size of the receptive field and mumserm This procedure shows the relationship of receptor density and field size to points varies f receptors. Obtain a pair of dividers that can be adjusted to varying distances apart. Have the volunteer close both eyes or look away. Separate the dividers to about 20 millimeters and then lower both points so they " gently poke the palm. Have the volunteer indicate whether one point or two points were felt. Shorten the distance between the dividers if two points were felt. Continue until you discover the closest distance the volunteer can differentiate two points from one point. Mix up the distances and use one point to keep the volunteer honest. Record the distance in millimeters on Table 4-3. Repeat using the fingertip. forearm, and dorsal forearm. ventral Table 4-3 Two Point Discrimination Body Region Omm Dorsal forearm mmVentral forearm Which area has the greatest discrimination or accuracy? Distance (mm) Body Region Palm Fingertip Distance (mm) 11. 12. Which area contains a smaller receptor field size and a greater density of receptors? is th e tipaExplanation / Answer
15) Yes, because it depends only on the concentration of receptors in a particular area of the skin. When there is a more sensory receptors in a particular region of the skin, then it sends more information to the cortex and more neurons need to be present in the cortex in order receive the information. So, number of receptors in fingertips is high than other regions of the skin and more space or neurons are present in the cortex to respond to the signal which helps to differentiate two different points.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.