10. A language processing function measuring device, comprising: a word presenting unit to present words to a subject; a biological activity measuring unit to measure the biological activity of the subject; and a calculation unit to calculate information measured by the biological activity measuring unit; and the calculation unit is equipped with word databases where word data indicating words to be presented to the subject, category of the words and attribute data of the words are related and then stored, respectively, and a word extractor to search the word databases and to extract the word data belonging to or relating to a predetermined category, and, satisfying predetermined word attribute, based upon the search conditions; and the word presenting unit presents a portion of or entire words indicated in the word data extracted by the word extractor; in addition, the biological activity measuring unit is equipped with a brain activity measuring unit to measure brain activity in the subject; and the calculation unit is equipped with a brain activity data calculator to calculate at least either brain activity time data indicating the time variation of the brain activity in the subject or brain activity position data indicating the position of the brain activity in the subject based upon the brain activity measurement data from the brain activity measuring unit.
10. A language processing function measuring device, comprising: a word presenting unit to present words to a subject; a biological activity measuring unit to measure the biological activity of the subject; and a calculation unit to calculate information measured by the biological activity measuring unit; and the calculation unit is equipped with word databases where word data indicating words to be presented to the subject, category of the words and attribute data of the words are related and then stored, respectively, and a word extractor to search the word databases and to extract the word data belonging to or relating to a predetermined category, and, satisfying predetermined word attribute, based upon the search conditions; and the word presenting unit presents a portion of or entire words indicated in the word data extracted by the word extractor; in addition, the biological activity measuring unit is equipped with a brain activity measuring unit to measure brain activity in the subject; and the calculation unit is equipped with a brain activity data calculator to calculate at least either brain activity time data indicating the time variation of the brain activity in the subject or brain activity position data indicating the position of the brain activity in the subject based upon the brain activity measurement data from the brain activity measuring unit. 12. The language processing function measuring device according to claim 10 wherein the word presenting unit presents at least a first word and a second word established from the word data extracted by the word extractor at a predetermined time interval.