Journal
NEUROPSYCHOLOGIA
Volume 148, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.neuropsychologia.2020.107625
Keywords
Visual memory; Occipital cortex; Electrocorticography; Alpha oscillations; Memory development; Scene complexity
Funding
- National Institute of Mental Health [R01MH107512]
- National Institute of Neurological Disorders and Stroke [R01NS64033, K99NS115918, R37NS21135]
- Department of Psychology at Wayne State University
- Institute of Gerontology at Wayne State University
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Processing of low-level visual information shows robust developmental gains through childhood and adolescence. However, it is unknown whether low-level visual processing in the occipital cortex supports age-related gains in memory for complex visual stimuli. Here, we examined occipital alpha activity during visual scene encoding in 24 children and adolescents, aged 6.2-20.5 years, who performed a subsequent memory task while undergoing electrocorticographic recording. Scenes were classified as high- or low-complexity by the number of unique object categories depicted. We found that recognition of high-complexity, but not low-complexity, scenes increased with age. Age was associated with decreased alpha power and increased instantaneous alpha frequency during the encoding of subsequently recognized high- compared to low-complexity scenes. Critically, decreased alpha power predicted improved recognition of high-complexity scenes in adolescents. These findings demonstrate how the functional maturation of the occipital cortex supports the development of memory for complex visual scenes.
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