The Primary Motor Projection Area Forms a "Map" of the Body

question 13

Multiple Choice

The primary motor projection area forms a "map" of the body, and the projections control movement to specific areas of the body. What is the variation in the amount of cortical tissue dedicated to different parts of the body based on?

• A) the size of the body part
• B) the distance of the body part from the brain
• C) the precision of movement for the body part
• D) The cortical area does not vary; it is the same for all body parts.

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Definitions:

Two-tail

A term used in statistical tests where the critical region is split between both ends of the distribution, testing for either significantly greater or lesser outcomes than the expected value.

Kruskal-Wallis Test

A non-parametric method for testing whether samples originate from the same distribution, often used as an alternative to one-way ANOVA when the assumptions of ANOVA are not met.

ANOVA F Test

A statistical test used to determine if there are any statistically significant differences between the means of three or more independent groups.

Completely Randomized Experiments

Experimental designs where all subjects are allocated to groups based only on chance, reducing systematic bias.