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Initiatives & Projectsproject 9 -- Neural basis of the development of reading in deaf signersVLAS 9: Neural basis of the development of reading in deaf signers: neural basis of word reading and single sign processing (Corina, Eden, Hauser, Bavelier, Emmorey & Singleton):
Using an implicit word processing paradigm that has been employed in child and adult studies of reading, we employ an "Implicit Reading Task,” which requires the detection of a visual feature within words and matched false font strings. Because the brain obligatorily processes visually presented words, this task elicits subconscious ("implicit") activation of the reading circuitry, even though subjects are not instructed to read the words. Furthermore, because performance of the task does not explicitly require reading, even novice readers can perform it accurately, and accuracy and reaction time can be matched across age. Using this paradigm, this study will provide the first step toward an understanding of the neural bases of reading in deaf children and compare these with data acquired in adults. To address reading at the sentence level, we are utilizing a paradigm in which short sentences are presented that are within the reading ability of participants. Following each sentence, subjects are asked to indicate whether the sentence was sensible or not (e.g. The girl closed the gate; The man fed the dress; etc). Accuracy and reaction time are collected during scanning. Participants in the imaging studies under this Initiative will complete the ASL-SRT proficiency measures (administered as part of the VL2 Toolkit) and will also be tested on the Woodcock-Johnson III Tests of Achievement, Passage Comprehension Subtest and Reading Fluency Subtest. We are also identifying further test as well as culturally sensitive measures of speech reading to be included in our battery. It is our plan to extend imaging studies to signers with varied language experience and auditory skills. Related Initiatives:
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