Know how brain separates ability to talk, write

New York: Ever wondered why someone who cannot write a grammatically correct sentence may be able say it aloud flawlessly? This is because writing and talking are independent systems in the brain, says a new research. The researcher found it is possible to damage the speaking part of the brain but leave the writing part unaffected -- and vice versa -- even when dealing with morphemes, the tiniest meaningful components of the language system including suffixes like "er," "ing" and "ed." The human ability to write evolved from our ability to speak, writing and speaking are supported by different parts of the brain -- and not just in terms of motor control in the hand and mouth, but in the high-level aspects of word construction.