Document Detail

Development of Pre-Word-Learning Skills in Infants with Cochlear Implants.
MedLine Citation:
PMID:  21643556     Owner:  NLM     Status:  Publisher    
Families of infants who are congenitally deaf now have the option of cochlear implantation at a very young age. In order to assess the effectiveness of early cochlear implantation, however, new behavioral procedures are needed to measure speech perception and language skills during infancy. One important component of language development is word learning-a complex skill that involves learning arbitrary relations between words and their referents. A precursor to word learning is the ability to perceive and encode intersensory relations between co-occurring auditory and visual events. Recent studies in infants with normal hearing have shown that intersensory redundancies, such as temporal synchrony, can facilitate the ability to learn arbitrary pairings between speech sounds and objects (Gogate & Bahrick, 1998). To investigate the early stages of learning arbitrary pairings of sounds and objects after cochlear implantation, we used the Preferential Looking Paradigm (PLP) to assess infants' ability to associate speech sounds to objects that moved in temporal synchrony with the onset and offsets of the signals. Children with normal hearing ranging in age from 6, 9, 18, and 30 months served as controls and demonstrated the ability to learn arbitrary pairings between temporally synchronous speech sounds and dynamic visual events. Infants who received their cochlear implants (CIs) at earlier ages (7-15 months of age) performed similarly to the infants with normal hearing after about 2-6 months of CI experience. In contrast, infants who received their implants at later ages (16-25 months of age) did not demonstrate learning of the associations within the context of this experiment. Possible implications of these findings are discussed.
Derek M Houston; Elizabeth A Ying; David B Pisoni; Karen Iler Kirk
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Publication Detail:
Journal Detail:
Title:  The Volta review     Volume:  103     ISSN:  0042-8639     ISO Abbreviation:  -     Publication Date:  2001  
Date Detail:
Created Date:  2011-7-6     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0417476     Medline TA:  Volta Rev     Country:  -    
Other Details:
Languages:  ENG     Pagination:  303-326     Citation Subset:  -    
assistant professor of otolaryngology-head and neck surgery and is the Philip F. Holton Scholar at the Indiana University School of Medicine in Indianapolis, IN.
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Grant Support
T32 DC000012-25//NIDCD NIH HHS; T32 DC000012-26//NIDCD NIH HHS; T32 DC000012-25//NIDCD NIH HHS; T32 DC000012-26//NIDCD NIH HHS

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