Significant individual differences in the trajectories of cognitive aging and in age-related changes of brain structure and function have been reported in the past half-century. In some individuals, significant pathological changes in the brain are observed in conjunction with relatively well-preserved cognitive performance. Multiple constructs have been invoked to explain this paradox of resilience, including brain reserve, cognitive reserve, brain maintenance, and compensation. The aim of this session of the Cognitive Aging Summit III was to examine the overlap and distinctions in definitions and measurement of these constructs, to discuss their neural and behavioral correlates and to propose plausible mechanisms of individual cognitive resilience in the face of typical age-related neural declines.
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http://dx.doi.org/10.1016/j.neurobiolaging.2019.03.022 | DOI Listing |
BMC Geriatr
January 2025
The School of Nursing, Fujian Medical University, Fuzhou City, 350122, Fujian Province, China.
Background: Dementia is a growing public health issue. Non-drug interventions targeting individuals before the onset of overt cognitive decline may be effective. Subjective cognitive decline (SCD) is present in > 50% of older adults and associated with progression to dementia.
View Article and Find Full Text PDFAging Clin Exp Res
January 2025
Dipartimento di Psicologia dello Sviluppo e della Socializzazione, Università di Padova, Padova, Italy.
In recent years, the increasing life expectancy has underscored the importance of cognitive health alongside physical well-being, particularly because healthy adults may report subjective cognitive complaints (SCC), often related to memory. These complaints may or may not align with objective cognitive impairments, fueling ongoing debates about whether SCC could serve as an early indicator of dementia. While some studies suggest SCC as a potential precursor to dementia, others propose that these complaints may merely co-occur with cognitive decline.
View Article and Find Full Text PDFEur J Neurosci
January 2025
Case Western Reserve University, Cleveland, Ohio, USA.
Movement disorders such as Parkinson's disease (PD) and cervical dystonia (CD) are associated with abnormal neuronal activity in the globus pallidus internus (GPi). Reduced firing rate and presence of spiking bursts are typical for CD, whereas PD is characterized by high frequency tonic activity. This research aims to identify the most important pallidal spiking parameters to classify these conditions.
View Article and Find Full Text PDFFront Cell Neurosci
January 2025
Department of Pathology, Case Western Reserve University, School of Medicine, Cleveland, OH, United States.
Creutzfeldt-Jakob disease (CJD) is a rare, fatal, rapidly progressive neurodegenerative disease resulting from an accumulation of misfolded prion proteins (PrP). CJD affects 1-2 new individuals per million each year, and the sporadic type accounts for 90% of those cases. Though the median age at onset and disease duration vary depending on the subtype of sporadic CJD (sCJD), the disease typically affects middle-aged to elderly individuals with a median survival of 4-6 months.
View Article and Find Full Text PDFNeurosci Biobehav Rev
January 2025
Department of Human Sciences, Guglielmo Marconi University, 00193 Rome, Italy; IRCCS Fondazione Santa Lucia, 00179 Rome, Italy. Electronic address:
The brain/cognitive/neural reserve concept suggests that lifelong experiences, from early life through adulthood, make the brain more resilient to neuronal damage. Modifiable lifestyle factors, such as sleep, can support the development and enhance such a reserve, helping to counteract age- or disease-related brain changes and their impact on cognition. Sleep plays a crucial role in cognitive functioning, and disruptions or disorders may increase neurodegenerative risks.
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