Wemmie's studies have shown that these acid-sensing proteins are required for normal fear responses and for learning and memory in mice. However, while you can buy a kit to measure the acidity of your garden soil, there currently is no easy way to measure pH changes in the brain.
For the normal version of the english typing test we have calculated an average of 41 WPM, this value is based on over 73 million typing results. Considering that these words are relatively easy to type, the avg WPM is probably around 20-25 WPM for normal text with punctutations etc.
Answer: People talk at an average rate of 100-120 words per minute. Meanwhile, a typical double spaced, typed written page is 250 words. So one double spaced, typed page equals two minutes when read aloud as a speech. You can use this ratio to determine approximately how long your speech will take when spoken aloud. Bonus tip: This web site article explains three attention grabbing ways to start your next speech.