A patient with an acquired dyslexia was asked to describe a scenario that included a particular word (presented in the visual modality). When they were presented with the word 'meat', they described a situation where two people met up at a cafe. The patient was then asked to read a word list aloud. When presented with the word 'prilt' they were able to pronounce the word correctly (according to grapheme phoneme correspondence rules for English). Which type of acquired dyslexia is most likely in this case and which language area is most likely to be affected? Question 40 options: Surface dyslexia; inferior frontal gyrus Phonological dyslexia; temporo-parietal area Phonological dyslexia; visual word form area Surface dyslexia; occipito-temporal area
Question
A patient with an acquired dyslexia was asked to describe a scenario that included a particular word (presented in the visual modality). When they were presented with the word 'meat', they described a situation where two people met up at a cafe. The patient was then asked to read a word list aloud. When presented with the word 'prilt' they were able to pronounce the word correctly (according to grapheme phoneme correspondence rules for English). Which type of acquired dyslexia is most likely in this case and which language area is most likely to be affected?
Question 40 options:
Surface dyslexia; inferior frontal gyrus
Phonological dyslexia; temporo-parietal area
Phonological dyslexia; visual word form area
Surface dyslexia; occipito-temporal area
Solution
The most likely type of acquired dyslexia in this case is Surface dyslexia; occipito-temporal area.
Here's why:
Surface dyslexia is a type of reading disorder where individuals have difficulty reading irregularly spelled words, relying instead on phonetic decoding. This is evident in the scenario where the patient read 'meat' as 'meet', a phonetically similar but semantically different word.
The occipito-temporal area, also known as the visual word form area, is involved in whole-word recognition, which is impaired in surface dyslexia. This area is responsible for recognizing words as complete units, rather than sequences of letters or sounds. When this area is damaged, individuals may struggle to read irregular words, like 'meat', correctly.
On the other hand, the patient was able to correctly pronounce 'prilt', a non-word that follows regular phonetic rules, indicating that their phonological processing (handled by the temporo-parietal area) is intact.
Therefore, the patient's symptoms align most closely with Surface dyslexia; occipito-temporal area.
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