FRACTIONATING THE ARTICULATORY LOOP - DISSOCIATIONS AND ASSOCIATIONS IN PHONOLOGICAL RECODING IN APHASIA

This paper uses neuropsychological data to differentiate between three models of verbal short-term memory (Baddeley, 1983, 1986; Beaner, 198 7; Monsell, 1987). The focus is on three tasks: homophone judgments, r hyme judgments and pseudohomophone detection. When lesioned each model predicts characteristic patterns of impairment across these tasks. Th irteen span impaired aphasic subjects were assessed on all three tasks . The patterns of performance unequivocally supported the model propos ed by Monsell (1987) which distinguishes input and output phonological buffers. Implications for further research are discussed. (C) 1997 Ac ademic Press