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 …

The space where aging acts: Focus on the GABA ergic synapse

A Rozycka, M Liguz‐Lecznar - Aging cell, 2017 - Wiley Online Library
As it was established that aging is not associated with massive neuronal loss, as was
believed in the mid‐20th Century, scientific interest has addressed the influence of aging on …

The trajectory of cortical GABA across the lifespan, an individual participant data meta-analysis of edited MRS studies

EC Porges, G Jensen, B Foster, RAE Edden, NAJ Puts - Elife, 2021 - elifesciences.org
γ-Aminobutyric acid (GABA) is the principal inhibitory neurotransmitter in the human brain
and can be measured with magnetic resonance spectroscopy (MRS). Conflicting accounts …

Edited magnetic resonance spectroscopy detects an age-related decline in brain GABA levels

F Gao, RAE Edden, M Li, NAJ Puts, G Wang, C Liu… - Neuroimage, 2013 - Elsevier
Gamma-aminobutyric acid (GABA) is the primary inhibitory neurotransmitter in the brain.
Although measurements of GABA levels in vivo in the human brain using edited proton …

Age-related dysregulation of homeostatic control in neuronal microcircuits

CI Radulescu, N Doostdar, N Zabouri… - Nature …, 2023 - nature.com
Neuronal homeostasis prevents hyperactivity and hypoactivity. Age-related hyperactivity
suggests homeostasis may be dysregulated in later life. However, plasticity mechanisms …

Sensorimotor network segregation declines with age and is linked to GABA and to sensorimotor performance

K Cassady, H Gagnon, P Lalwani, M Simmonite… - Neuroimage, 2019 - Elsevier
Aging is typically associated with declines in sensorimotor performance. Previous studies
have linked some age-related behavioral declines to reductions in network segregation. For …

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 …

[HTML][HTML] A literature review on the neurophysiological underpinnings and cognitive effects of transcutaneous vagus nerve stimulation: challenges and future directions

L Colzato, C Beste - Journal of neurophysiology, 2020 - journals.physiology.org
Brain stimulation approaches are important to gain causal mechanistic insights into the
relevance of functional brain regions and/or neurophysiological systems for human cognitive …

Age-related changes in the central auditory system

L Ouda, O Profant, J Syka - Cell and tissue research, 2015 - Springer
Aging is accompanied by the deterioration of hearing that complicates our understanding of
speech, especially in noisy environments. This deficit is partially caused by the loss of hair …

Arousal increases neural gain via the locus coeruleus–noradrenaline system in younger adults but not in older adults

TH Lee, SG Greening, T Ueno, D Clewett… - Nature Human …, 2018 - nature.com
In younger adults, arousal amplifies attentional focus to the most salient or goal-relevant
information while suppressing other information. A computational model of how the locus …