Electrophysiological indexes of encoding and behavioral indexes of recall: examining relations and developmental change late in the first year of life.
Long-term memory undergoes pronounced development in the latter part of the 1st year. This research combines electrophysiological (event-related potential [ERP]) and behavioral (deferred imitation) measures of encoding and recall, respectively, in an examination of age-related changes in and relations between encoding and recall during this time. In a short-term longitudinal study, infants were exposed to different multistep sequences at 9 and at 10 months. In both phases, they were tested for immediate recognition of the events via ERPs (as an index of encoding), and for recall of them 1 month later. At both ages, infants encoded the events; encoding was more robust at 10 months than at 9 months. After the 1-month delay, infants failed to recall the events experienced at 9 months, but evidenced recall of the events experienced at 10 months. In spite of developmental differences in encoding and recall over this period, indexes of encoding at 9 months were correlated with measures of recall of events experienced at 10 months and tested 1 month later.
Bauer
Patricia J
PJ
Institute of Child Development, University of Minnesota, USA. patricia.bauer@duke.edu
Wiebe
Sandra A
SA
Carver
Leslie J
LJ
Lukowski
Angela F
AF
Haight
Jennifer C
JC
Waters
Jennie M
JM
Nelson
Charles A
CA
D000367:Age Factors; D001245:Association Learning / Q000502:physiology; D001931:Brain Mapping; D002657:Child Development; D004569:Electroencephalography / Q000379:methods; D005071:Evoked Potentials / Q000502:physiology*; D005260:Female; D006801:Humans; D007100:Imitative Behavior / Q000502:physiology*; D007223:Infant; D008137:Longitudinal Studies; D008297:Male; D011939:Mental Recall / Q000502:physiology*; D009483:Neuropsychological Tests / Q000706:statistics & numerical data; D011597:Psychomotor Performance / Q000502:physiology; D021641:Recognition, Psychology / Q000502:physiology; D013997:Time Factors