Patterns of brain-electrical activity during declarative memory performance in 10-month-old infants.
This study of infant declarative memory concurrently examined brain-electrical activity and deferred imitation performance in 10-month-old infants. Continuous electroencephalogram (EEG) measures were collected throughout the activity-matched baseline, encoding (modeling) and retrieval (delayed test) phases of a within-subjects deferred imitation task. Infants were divided into two memory performance groups based on the exhibition of ordered-recall after a 24-h delay. Whereas no group differences were found in EEG collected during encoding, performance-group differences in EEG were present during retrieval. Infants who successfully displayed ordered-recall showed a pattern of increasing EEG from baseline to task at anterior temporal scalp locations, whereas infants showing no ordered-recall displayed no changes in EEG from baseline to task. These findings are discussed with respect to the biobehavioral developments underlying declarative memory abilities.
Department of Psychology, 109 Williams Hall, Mail Code 0436, Blacksburg, VA 24061, USA. kacolo@vt.edu
Katherine C
KC
Morasch
Martha Ann
MA
Bell
D001288:Attention / Q000502:physiology; D001921:Brain / Q000502:physiology*; D002657:Child Development / Q000502:physiology; D003210:Concept Formation / Q000502:physiology; D004569:Electroencephalography; D005260:Female; D006801:Humans; D007100:Imitative Behavior / Q000502:physiology*; D007223:Infant; D008297:Male; D008568:Memory / Q000502:physiology*; D009483:Neuropsychological Tests; D011597:Psychomotor Performance / Q000502:physiology*; D012815:Signal Processing, Computer-Assisted; D014741:Video Recording