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The genius holds a " optic lexicon " of discussion we have read , let quick recognition without sounding out password each time we see them , a new bailiwick find .
The research , presented today ( Nov. 14 ) at the annual meeting of the Society for Neuroscience in Washington , D.C. , could be useful for understanding the suit of read disorderliness such asdyslexia , according to the research worker . The study reveals how the brain function with speech , which have both a visual , written component , and a phone - base phonemics component .
Our brain keeps a handy visual index of words we’ve seen before, speeding up the reading process, according to research presented Nov. 14 at the annual meeting of the Society for Neuroscience.
" One camp of neuroscientist believes that we access both the phonology and thevisual perceptionof a word as we read it , and that the area or areas of the psyche that do one , also do the other , " study leader Laurie Glezer , a postdoctoral researcher at Georgetown University Medical Center , say in a statement . " But our study proves this is n’t the case . "
Instead , Glezer say , the nous dispenses of strait - based processing when study and focus on what words look like on paper .
" What we found is that once we ’ve learned a word , it is placed in a strictly visual dictionary in the Einstein . Having a strictly ocular agency appropriate for the debauched and effective give-and-take acknowledgement we see in skilled readers , " Glezer said . " This subject area is the first demonstration of that concept . "
Dictionary in the mentality
To ravel out the brain ’s recital strategies , Glezer and her confrere had 12 volunteer read words while in a running magnetic resonance imaging ( fMRI ) machine . This machine assess blood flow tovarious brain areas , revealing which are most participating at any given second in time .
The volunteers study words that were different , but sound the same , such as " whisker " and " hare . " The fMRI results showed that these two homophone activate unlike neuron , much as if the two Word were store on different Page of a dictionary .
" If the sound of the word had influence in this part of the brain we would expect to see that they spark the same or standardised neuron , but this was not the lawsuit , ' hair ' and ' hare ' seem just as different as ' hair ' and ' soup , ' " Glezer said . " This suggests that all we use is the visual information of a Scripture and not the sounds . "
Visual reading and dyslexia
Glezer suspects that the determination may explain why people with the meter reading upset dyslexiastruggle over written words . If people with dyslexia have trouble with the initial phonological sounding out of words , then they may never transfer that laborious sounding - out process into a visual " cutoff " that allows for exigent word recognition without the need for sound .
" They ca n’t take advantage of the fast processing of Christian Bible using this dictionary , " Glezer say .
If Glezer ’s hypothesis about dyslexia turns out to be dead on target , it could open up new avenues of treatment for the upset , she say .
" If the great unwashed with dyslexia have a problem forming this optical dictionary , " Glezer enunciate , " it may be that there could be fashion of helping geartrain small fry with dyslexia to shape a more finely tune ocular lexicon . "
