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.
Morasch
Katherine C
KC
Department of Psychology, 109 Williams Hall, Mail Code 0436, Blacksburg, VA 24061, USA. kacolo@vt.edu
Bell
Martha Ann
MA
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