Direct brain recordings reveal occipital cortex involvement in memory development.

Autor: Yin Q; Life-Span Cognitive Neuroscience Program, Institute of Gerontology and Merrill Palmer Skillman Institute, Wayne State University, Detroit, MI, USA; Department of Psychology, Wayne State University, Detroit, MI, USA., Johnson EL; Life-Span Cognitive Neuroscience Program, Institute of Gerontology and Merrill Palmer Skillman Institute, Wayne State University, Detroit, MI, USA; Helen Wills Neuroscience Institute, University of California, Berkeley, CA, USA., Tang L; Life-Span Cognitive Neuroscience Program, Institute of Gerontology and Merrill Palmer Skillman Institute, Wayne State University, Detroit, MI, USA; Department of Psychology, Wayne State University, Detroit, MI, USA., Auguste KI; Department of Neurological Surgery, University of California, San Francisco, CA, USA; Department of Surgery, Division of Neurological Surgery, Children's Hospital and Research Center, Oakland, CA, USA., Knight RT; Helen Wills Neuroscience Institute, University of California, Berkeley, CA, USA; Department of Psychology, University of California, Berkeley, CA, USA., Asano E; Departments of Pediatrics and Neurology, Children's Hospital of Michigan, Wayne State University, Detroit, MI, USA., Ofen N; Life-Span Cognitive Neuroscience Program, Institute of Gerontology and Merrill Palmer Skillman Institute, Wayne State University, Detroit, MI, USA; Department of Psychology, Wayne State University, Detroit, MI, USA. Electronic address: noa.ofen@wayne.edu.
Jazyk: angličtina
Zdroj: Neuropsychologia [Neuropsychologia] 2020 Nov; Vol. 148, pp. 107625. Date of Electronic Publication: 2020 Sep 15.
DOI: 10.1016/j.neuropsychologia.2020.107625
Abstrakt: 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.
(Copyright © 2020 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
Externí odkaz: