So it really prevents you from going low, and that's its main function."

VOA: standard.2010.04.15

The first function deals with recognizing a word, the second with understanding the word's context in a sentence, and the third lets us articulate the word by speaking.

VOA: standard.2010.01.15

they may even have an impact on the heart's electrical function.

VOA: standard.2010.03.25