Dyslexia affects 1 in 10 people and, until now, researchers have believed that dyslexic individuals have difficulty in processing phonemes, or the smallest units of sound, the Los Angeles Times reports. A new study in Science, however, has shown that the issue dyslexic people have is not in their ability to form and store phonemes, but rather lays in the connection between phoneme-storing centers and the processing center of the brain. Using fMRI, researchers showed that both dyslexic and non-dyslexic individuals had normal connections and neuronal firing in the centers of the brain associated with phoneme recognition. Where they differed was in the connections between phoneme centers and Broca’s area, which is responsible for the conversion of language to speech: dyslexic people showed weakened connections between these two centers. The findings are the first to show a connectivity problem in the brain’s white matter in dyslexia.