Abstract
We present behavioral and anatomical evidence for a multi-component
reading system in which different components are differentially weighted
depending on culture-specific demands of orthography. Italian orthography
is consistent, enabling reliable conversion of graphemes to phonemes
to yield correct pronunciation of the word. English orthography is
inconsistent, complicating mapping of letters to word sounds. In
behavioral studies, Italian students showed faster word and non-word
reading than English students. In two PET studies, Italians showed
greater activation in left superior temporal regions associated with
phoneme processing. In contrast, English readers showed greater activations,
particularly for non-words, in left posterior inferior temporal gyrus
and anterior inferior frontal gyrus, areas associated with word retrieval
during both reading and naming tasks.
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