Patterns of brain-electrical activity during declarative memory performance in 10-month-old infants |
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| Institution: | 1. Institute of Life Sciences, Scuola Superiore Sant''Anna, Pisa, Italy;2. Cardiology Division, University of Pisa, Italy;3. Allergy and Immunology Division, University of Pisa, Pisa, Italy;4. Cardiology Division, Fondazione Toscana Gabriele Monasterio, Pisa, Italy;5. Clinical Pathology Unit, University of Pisa, Italy;6. University of California, San Diego, CA, USA;1. Charité University Medicine Berlin, Department of Neurology, Berlin, Germany;2. Max Planck Institute for Human Cognitive and Brain Sciences, Department of Neurology, Leipzig, Germany |
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| Abstract: | 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. |
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