The Amount of Cortical Space in the Primary Motor Cortex

question 26

True/False

The amount of cortical space in the primary motor cortex devoted to a given body part is proportional to the size of the part.

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Definitions:

Debris Flows

Rapid, downhill flow of soil and rock fragments containing a large amount of water, which makes the mixture thick and fluid-like.

River Terrace

A flat, bench-like structure along the sides of a valley, formed by the erosion of a river and representing a previous level of the river bed.

Rock Falls

A geological occurrence where rocks or debris fall freely from a cliff or hillside, often due to erosion or weathering.

River Terraces

Stepped platforms along a river valley, formed by the river cutting into its own floodplain or valley floor at different times, reflecting changes in water level or flow.