The relationship between age, neural differentiation, and memory performance

JD Koen, N Hauck, MD Rugg - Journal of Neuroscience, 2019 - Soc Neuroscience
Healthy aging is associated with decreased neural selectivity (dedifferentiation) in category-
selective cortical regions. This finding has prompted the suggestion that dedifferentiation …

Dedifferentiation in the visual cortex: an fMRI investigation of individual differences in older adults

MW Voss, KI Erickson, L Chaddock, RS Prakash… - Brain research, 2008 - Elsevier
Dedifferentiation, or decreased processing specificity, has been suggested to represent a
ubiquitous characteristic of cognitive aging. In this study, we examined both age-related …

Age-related neural dedifferentiation and cognition

JD Koen, S Srokova, MD Rugg - Current Opinion in Behavioral Sciences, 2020 - Elsevier
This review focuses on possible contributions of neural dedifferentiation to age-related
cognitive decline. Neural dedifferentiation is held to reflect a breakdown in the functional …

Pattern separation deficits associated with increased hippocampal CA3 and dentate gyrus activity in nondemented older adults

MA Yassa, JW Lacy, SM Stark, MS Albert… - …, 2011 - Wiley Online Library
There is widespread evidence that memory deteriorates with aging, however the exact
mechanisms that underlie these changes are not well understood. Given the growing size of …

Age differences in neural distinctiveness revealed by multi-voxel pattern analysis

J Carp, J Park, TA Polk, DC Park - Neuroimage, 2011 - Elsevier
Current theories of cognitive aging argue that neural representations become less distinctive
in old age, a phenomenon known as dedifferentiation. The present study used multi-voxel …

Age-related individual variability in memory performance is associated with amygdala-hippocampal circuit function and emotional pattern separation

SL Leal, JA Noche, EA Murray, MA Yassa - Neurobiology of aging, 2017 - Elsevier
While aging is generally associated with episodic memory decline, not all older adults
exhibit memory loss. Furthermore, emotional memories are not subject to the same extent of …

[HTML][HTML] Age differences in the neural representation of working memory revealed by multi-voxel pattern analysis

J Carp, L Gmeindl, PA Reuter-Lorenz - Frontiers in Human …, 2010 - frontiersin.org
Working memory function declines across the lifespan. Computational models of aging
attribute such memory impairments to reduced distinctiveness between neural …

GABA levels in ventral visual cortex decline with age and are associated with neural distinctiveness

JD Chamberlain, H Gagnon, P Lalwani… - Neurobiology of …, 2021 - Elsevier
Age-related neural dedifferentiation—a decline in the distinctiveness of neural
representations in the aging brain—has been associated with age-related declines in …

Neural dedifferentiation in the aging brain

JD Koen, MD Rugg - Trends in cognitive sciences, 2019 - cell.com
Many cognitive abilities decline with age even in the absence of detectable pathology.
Recent evidence indicates that age-related neural dedifferentiation, operationalized in terms …

[HTML][HTML] Age differentiation within gray matter, white matter, and between memory and white matter in an adult life span cohort

SMM de Mooij, RNA Henson, LJ Waldorp… - Journal of …, 2018 - Soc Neuroscience
It is well established that brain structures and cognitive functions change across the life
span. A long-standing hypothesis called “age differentiation” additionally posits that the …