In a different part of the cortex is a comparable hierarchy of pattern recognizers processing actual images of objects (as opposed to printed letters). If you are looking at an actual apple, low-level recognizers will detect curved edges and surface color patterns leading up to a pattern recognizer firing its axon and saying in effect, “Hey guys, I just saw an actual apple.” Yet other pattern recognizers will detect combinations of frequencies of sound leading up to a pattern recognizer in the auditory cortex that might fire its axon indicating, “I just heard the spoken word ‘apple.’”
