Apple banana blue walk tree happy sing. Surely you were able to read each of the words in that sentence and understand what they meant independently. An apple is a fruit that is usually round and red, green or yellow.
One of the most complex mental activities we can engage in is reading. When you look at brain scans taken while the subjects are reading you see many of the areas of the brain lit up with activity. As we read we are simultaneously using our knowledge of sound segments (phonemes)
