29/07/2015
When We Read, We Recognize Words as Pictures and Hear Them Spoken Aloud
As your eyes scan these words, your brain seems to derive their meaning
instantaneously. How are we able to recognize and interpret marks on a page
so rapidly? A small new study confirms that a specialized brain area
recognizes printed words as pictures rather than by their meaning.
Researchers led by neuroscientist Maximilian Riesenhuber of Georgetown
University Medical Center scanned the brains of 12 subjects with functional
MRI. They focused on a tiny area of the brain known to be involved in
recognizing words, the visual word form area (VWFA), found on the surface
of the brain, behind the left ear. The VWFA's right hemisphere analogue is
the fusiform face area, which allows us to recognize faces. In young
children and people who are illiterate, the VWFA region and the fusiform
face area both respond to faces. As people learn to read, the VWFA region
is co-opted for word recognition.