Sleep confers a benefit for retention of statistical language learning in 6.5 month old infants

Katharine N S Simon, Denise Werchan, Michael R. Goldstein, Lucia Sweeney, Richard R Bootzin, Lynn Nadel, Rebecca L Gomez

Research output: Contribution to journalArticle

15 Scopus citations

Abstract

Infants show robust ability to track transitional probabilities within language and can use this information to extract words from continuous speech. The degree to which infants remember these words across a delay is unknown. Given well-established benefits of sleep on long-term memory retention in adults, we examine whether sleep similarly facilitates memory in 6.5 month olds. Infants listened to an artificial language for 7 minutes, followed by a period of sleep or wakefulness. After a time-matched delay for sleep and wakefulness dyads, we measured retention using the head-turn-preference procedure. Infants who slept retained memory for the extracted words that was prone to interference during the test. Infants who remained awake showed no retention. Within the nap group, retention correlated with three electrophysiological measures (1) absolute theta across the brain, (2) absolute alpha across the brain, and (3) greater fronto-central slow wave activity (SWA).

Original languageEnglish (US)
Pages (from-to)3-12
Number of pages10
JournalBrain and Language
Volume167
DOIs
StatePublished - Apr 1 2017

Keywords

  • Infants
  • Language acquisition
  • Memory retention
  • Sleep
  • Statistical learning

ASJC Scopus subject areas

  • Language and Linguistics
  • Experimental and Cognitive Psychology
  • Linguistics and Language
  • Cognitive Neuroscience
  • Speech and Hearing

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