Which phrase best defines “summary”?
a brief statement of the main ideas of a text
a source excerpt in your own words
a word-for-word excerpt from a text
a sentence written on an index card

The answer is: a brief statement of the main ideas of a text.

A summary is, indeed, a brief account that covers all main points of a given text. It is written in one´s own words in order to assure that these points have been comprehended (if one can paraphrase an idea, one has understood it) and to avoid plagiarism. A good summary is able to capture the sense of the main points in the text, which means that it can work as a guide for future revisions of the text, without it being a replacement of the text.  

in the thematic approach, an interpreter relies on a central theme (i.e., a major point or message) to guide development of a communication activity or device. in presenting the activity or device, the thematic interpreter develops the theme in such a way that it will be highly relevant to an audience.

explanation:

some attention getter quotes to support your thesis regarding brain work could be the following: :

a. storage capacity of your brain is virtually unlimited.

b. your brain produces sufficient electricity to light-up a small bulb.

c. different brain circuits are involved with reading aloud or silently.

d. your brain by itself does not feel pain.

e. reading allows your brain to download info directly.

f. brains of two musicians performing together can synchronize.