This application requests support for a program of basic and clinical research on speech perception and spoken word recognition. The primary objective of this project is to understand how spoken words are recognized and how acoustic-phonetic and indexical information in the speech signal interact with other knowledge sources to support robust spoken language understanding. The proposed research will involve behavioral studies of speech perception and spoken word recognition as well as computational analyses of the sound patterns of word-forms in the mental lexicon to study global organization and connectivity patterns of spoken words.
Four specific aims will be studied: (1) lexical knowledge and organization, (2) perceptual learning and adaptation, (3) speech perception under adverse listening conditions, and (4) individual differences in working memory dynamics (capacity and speed) in hearing-impaired listeners with cochlear implants (CIs). The research findings will provide a much stronger conceptual and theoretical basis for explaining the core underlying factors that are responsible for the variability and individual differences observed in speech and language processing in normal-hearing typical-developing listeners. The results from this project will also have important direct clinical implications for understanding individual differences in speech and language outcomes in hearing-impaired children and adults who use CIs.

Public Health Relevance

The objective of this research project is to understand how spoken words are recognized and how acoustic- phonetic and indexical information encoded in the speech signal interact with other knowledge sources to support robust spoken language processing. The proposed research will involve behavioral studies of speech perception and spoken word recognition as well as computational analyses of the sound patterns of word- forms in the mental lexicon. The results will have direct clinical implications for understanding and explaining the enormous individual differences in speech and language outcomes in hearing-impaired children and adults who use CIs, especially deaf children who may be at high risk for poor outcomes following implantation.

Agency
National Institute of Health (NIH)
Institute
National Institute on Deafness and Other Communication Disorders (NIDCD)
Type
Research Project (R01)
Project #
5R01DC000111-35
Application #
8286929
Study Section
Language and Communication Study Section (LCOM)
Program Officer
Shekim, Lana O
Project Start
1975-06-01
Project End
2016-06-30
Budget Start
2012-07-01
Budget End
2013-06-30
Support Year
35
Fiscal Year
2012
Total Cost
$635,199
Indirect Cost
$222,732
Name
Indiana University Bloomington
Department
Psychology
Type
Schools of Arts and Sciences
DUNS #
006046700
City
Bloomington
State
IN
Country
United States
Zip Code
47401
Moberly, Aaron C; Bates, Chelsea; Harris, Michael S et al. (2016) The Enigma of Poor Performance by Adults With Cochlear Implants. Otol Neurotol 37:1522-1528
Smith, Gretchen N L; Conway, Christopher M; Bauernschmidt, Althea et al. (2015) Can we improve structured sequence processing? Exploring the direct and indirect effects of computerized training using a mediational model. PLoS One 10:e0127148
Casserly, Elizabeth D; Pisoni, David B (2015) Auditory Learning Using a Portable Real-Time Vocoder: Preliminary Findings. J Speech Lang Hear Res 58:1001-16
AuBuchon, Angela M; Pisoni, David B; Kronenberger, William G (2015) Verbal processing speed and executive functioning in long-term cochlear implant users. J Speech Lang Hear Res 58:151-62
AuBuchon, Angela M; Pisoni, David B; Kronenberger, William G (2015) Short-Term and Working Memory Impairments in Early-Implanted, Long-Term Cochlear Implant Users Are Independent of Audibility and Speech Production. Ear Hear 36:733-7
Montag, Jessica L; AuBuchon, Angela M; Pisoni, David B et al. (2014) Speech intelligibility in deaf children after long-term cochlear implant use. J Speech Lang Hear Res 57:2332-43
Tamati, Terrin N; Pisoni, David B (2014) Non-native listeners' recognition of high-variability speech using PRESTO. J Am Acad Audiol 25:869-92
Roman, Adrienne S; Pisoni, David B; Kronenberger, William G (2014) Assessment of Working Memory Capacity in Preschool Children Using the Missing Scan Task. Infant Child Dev 23:575-587
Tamati, Terrin N; Gilbert, Jaimie L; Pisoni, David B (2014) Influence of early linguistic experience on regional dialect categorization by an adult cochlear implant user: a case study. Ear Hear 35:383-6
Hay-McCutcheon, Marcia J; Peterson, Nathaniel R; Rosado, Christian A et al. (2014) Identification of Acoustically Similar and Dissimilar Vowels in Profoundly Deaf Adults Who Use Hearing Aids and/or Cochlear Implants: Some Preliminary Findings. Am J Audiol 23:57-70

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