Dumay, N. and Gaskell, G. (2007) Sleep-associated changes in the mental representation of spoken words. Psychological Science, 18 (1). pp. 35-39. ISSN 0956-7976
The integration of a newly learned spoken word form with existing knowledge in the mental lexicon is characterized by the word form's ability to compete with similar-sounding entries during auditory word recognition. Here we show that although the mere acquisition of a spoken form is swift, its engagement in lexical competition requires an incubation-like period that is crucially associated with sleep. Words learned at 8 p.m. do not induce (inhibitory) competition effects immediately, but do so after a 12-hr interval including a night's sleep, and continue to induce such effects after 24 hr. In contrast, words learned at 8 a.m. do not show such effects immediately or after 12 hr of wakefulness, but show the effects only after 24 hr, after sleep has occurred. This time-course dissociation is best accommodated by connectionist and neural models of learning in which sleep provides an opportunity for hippocampal information to be fed into long-term neocortical memory.
|Institution:||The University of York|
|Academic Units:||The University of York > Psychology (York)|
|Depositing User:||York RAE Import|
|Date Deposited:||13 Feb 2009 12:32|
|Last Modified:||13 Feb 2009 12:32|
|Publisher:||Blackwell Publishing Ltd|