Background: Context memory, or the ability to remember the context in which an episodic event has occurred (e.g., where and when an event took place), has been found to be compromised in Korsakoff's syndrome. This study examined whether a similar deficit would be observed for destination memory, that is, the ability to remember to whom an information was previously transmitted.
Methods: Patients with Korsakoff's syndrome and healthy controls were instructed to tell proverbs to pictures of celebrities. In a subsequent recognition test, they had to indicate to which celebrity they had previously told the proverbs. Participants also completed a neuropsychological battery including a binding task in which they were required to associate letters with their correspondent locations to assess context memory.
Results: Results showed worse binding and destination memory in patients with Korsakoff's syndrome than in controls. In the Korsakoff group, destination memory was significantly correlated with and predicted by performances on the binding task.
Conclusions: The binding process seems to be impaired in Korsakoff's syndrome, a deficit that may account for the destination memory compromise in the syndrome, and probably, for the difficulty to retrieve the "where and when" of an encountered event.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1111/acer.13070 | DOI Listing |
BMC Med
January 2025
Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, USA.
Background: Since older adults spend significant time in their neighborhood environment, environmental factors such as neighborhood socioeconomic disadvantage, high racial segregation, low healthy food availability, low access to recreation, and minimal social engagement may have adverse effects on cognitive function and increase susceptibility to dementia. DNA methylation, which is associated with neighborhood characteristics as well as cognitive function and white matter hyperintensity (WMH), may act as a mediator between neighborhood characteristics and neurocognitive outcomes.
Methods: In this study, we examined whether DNA methylation in peripheral blood leukocytes mediates the relationship between neighborhood characteristics and cognitive function (N = 542) or WMH (N = 466) in older African American (AA) participants without preliminary evidence of dementia from the Genetic Epidemiology Network of Arteriopathy (GENOA).
Cell Rep
January 2025
Institute of Microbiology, ETH Zürich, Vladimir-Prelog-Weg 4, 8093 Zürich, Switzerland. Electronic address:
How a single, naive T cell can give rise to diverse progenies of effector and memory cells is not completely understood. One way to achieve this is by asymmetric cell division (ACD), characterized by an unequal distribution of cellular cargo, resulting in divergent daughter cells already after the first division-one being more destined to an effector and the other more to a memory fate. Here, we established two methods to analyze the relative distribution of the older "mother" centrosome and the younger "daughter" centrosome during the first cell division of activated CD8 T cells.
View Article and Find Full Text PDFNat Commun
December 2024
Energy & Memory, Brain Plasticity (UMR 8249), CNRS, ESPCI Paris, PSL Research University, Paris, France.
An essential role of glial cells is to comply with the large and fluctuating energy needs of neurons. Metabolic adaptation is integral to the acute stress response, suggesting that glial cells could be major, yet overlooked, targets of stress hormones. Here we show that Dh44 neuropeptide, Drosophila homologue of mammalian corticotropin-releasing hormone (CRH), acts as an experience-dependent metabolic switch for glycolytic output in glia.
View Article and Find Full Text PDFAdv Neurobiol
November 2024
Graduate School of Brain Science, Doshisha University, Kyoto, Japan.
J Alzheimers Dis
January 2025
IRCCS Ospedale Policlinico San Martino, Genoa, Italy.
Background: Magnetic resonance imaging (MRI) has recently enabled to identify four distinct Alzheimer's disease (AD) subtypes: hippocampal sparing (HpSp), typical AD (tAD), limbic predominant (Lp), and minimal atrophy (MinAtr). To date, however, the natural history of these subtypes, especially regarding the presence of subjects switching to other MRI patterns and their clinical and biological differences, remains poorly understood.
Objective: To investigate the clinical and biological underpinnings of longitudinal atrophy pattern progression in AD.
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!