Bridging computational approaches to speech production: The semantic-lexical-auditory-motor model (SLAM).

ABSTRACT: Speech production is studied from both psycholinguistic and motor-control perspectives, with little interaction between the approaches. We assessed the explanatory value of integrating psycholinguistic and motor-control concepts for theories of speech production. By augmenting a popular psycholinguistic model of lexical retrieval with a motor-control-inspired architecture, we created a new computational model to explain speech errors in the context of aphasia. Comparing the model fits to picture-naming data from 255 aphasic patients, we found that our new model improves fits for a theoretically predictable subtype of aphasia: conduction. We discovered that the improved fits for this group were a result of strong auditory-lexical feedback activation, combined with weaker auditory-motor feed

SUBMITTER: Walker GM 

PROVIDER: S-EPMC5363858 | biostudies-literature | 2016 Apr

REPOSITORIES: biostudies-literature