Effectively navigating and understanding primary literature is an important step in your journey as a scientist. Primary literature is where scientists share their work with other scientists and contribute new findings to their field. What makes primary literature different from other sources, like magazines or news web sites, is that it is peer reviewed, which means that other scientists review the paper before it is published.

a motor homunculus represents a map of brain areas dedicated to motor processing for different anatomical divisions of the body.

homunculus represents the importance of various parts of your body as seen by your brain. as a result, they take up a lot of brain space. although the cortical homunculus is a curiosity, penfield's work in mapping the brain's relationship to the body was invaluable.

the water is warmed up by the sun and then it evaporates into the atmosphere. the sunlight warms the water by its heat. water is then cooled down and condensation takes place. the water then finally returns back to the earth by the process of precipitation in the form of rain or ice.

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