Publications by authors named "L M Nyberg"

The cognitive neuroscience of human aging seeks to identify neural mechanisms behind the commonalities and individual differences in age-related behavioral changes. This goal has been pursued predominantly through structural or "task-free" resting-state functional neuroimaging. The former has elucidated the material foundations of behavioral decline, and the latter has provided key insight into how functional brain networks change with age.

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Where in the brain is human intelligence?.

Cereb Circ Cogn Behav

December 2024

We still know relatively little about how the human brain supports intelligence. I this personal view I argue that adopting the framework of neurocognitive component processes (NCP) might advance the current state of knowledge. Integration of information processing across distributed brain regions is proposed as a potential NCP, and some possible clinical implications of adopting the NCP framework are outlined.

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Article Synopsis
  • Recent studies showed only weak connections between age, dopamine receptor availability, and cognitive decline, suggesting more research is needed.
  • Longitudinal data over five years found that older adults who experienced declines in D2/3 dopamine receptors had worse working memory performance over time.
  • Specifically, the decline in dopamine receptor availability was significant in key brain regions linked to working memory, supporting the idea that dopamine changes contribute to cognitive aging.
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Throughout adulthood and ageing our brains undergo structural loss in an average pattern resembling faster atrophy in Alzheimer's disease (AD). Using a longitudinal adult lifespan sample (aged 30-89; 2-7 timepoints) and four polygenic scores for AD, we show that change in AD-sensitive brain features correlates with genetic AD-risk and memory decline in healthy adults. We first show genetic risk links with more brain loss than expected for age in early Braak regions, and find this extends beyond APOE genotype.

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