Abstract
We present three jargonaphasic patients who made phonological errors in naming, repetition and reading. We analyze target/response overlap using statistical models to answer three questions: 1) Is there a single phonological source for errors or two sources, one for target-related errors and a separate source for abstruse errors? 2) Can correct responses be predicted by the same distribution used to predict errors or do they show a completion boost? 3) Is non-lexical and lexical information summed during reading and repetition? The answers were clear. 1) Abstruse errors did not require a separate distribution created by failure to access word forms. Abstruse and target-related errors were the endpoints of a single overlap distribution. 2) Correct responses required a special factor, e.g. a completion boost or lexical/phonological feedback, to preserve their integrity. 3) Reading and repetition required separate lexical and non-lexical contributions that were combined at output.
Original language | English |
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Pages (from-to) | 158-179 |
Journal | Cortex |
Volume | 73 |
Early online date | 26 Jul 2015 |
DOIs | |
Publication status | Published - Dec 2015 |
Keywords
- jargonaphasia
- speech production
- computational models
- statistical models
- aphasia
- reading
- naming
- repetition