scholarly journals Individual electromagnetic profiles for the prediction of episodic memory change in early stages of dementia

2020 ◽  
Vol 16 (S5) ◽  
Author(s):  
Alejandra García Colomo ◽  
David López Sanz ◽  
Alberto Nebreda ◽  
Jaisalmer de Frutos ◽  
Ricardo Bruña Fernández ◽  
...  
Keyword(s):  
Episodic Memory ◽  
Early Stages ◽  
Memory Change

Neural correlates of episodic memory change in increasing age: a longitudinal event-related potential study

Neuroreport ◽  
2021 ◽  
Vol 32 (3) ◽  
pp. 268-273
Author(s):  
Lina F. Guerrero ◽  
Badiâa Bouazzaoui ◽  
Michel Isingrini ◽  
Emilie Alibran ◽  
Lucie Angel
Keyword(s):  
Episodic Memory ◽  
Neural Correlates ◽  
Event Related Potential ◽  
Memory Change ◽  
Potential Study

Does reactivation trigger episodic memory change? A meta-analysis

2017 ◽  
Vol 142 ◽  
pp. 99-107 ◽  
Author(s):  
Iiona D. Scully ◽  
Lucy E. Napper ◽  
Almut Hupbach
Keyword(s):  
Episodic Memory ◽  
Meta Analysis ◽  
Memory Change

Interrelations between Subjective Health and Episodic Memory Change in Swedish and Canadian Samples of Older Adults

2003 ◽  
Vol 57 (1) ◽  
pp. 21-35 ◽  
Author(s):  
Å Wahlin ◽  
Scott B. Maitland ◽  
Lars Bäckman ◽  
Roger A. Dixon
Keyword(s):  
Older Adults ◽  
Episodic Memory ◽  
Memory Performance ◽  
Subjective Health ◽  
Longitudinal Change ◽  
Subjective Memory ◽  
Cross Sectional ◽  
Memory Change ◽  
Two Samples ◽  
Kungsholmen Project

Recent research has documented associations between subjective health ratings and objective indicators of disease and death. Less is known about relations between subjective health ratings and level of cognitive performance in older adults. In this study, we explored whether subjective health ratings are related to episodic memory performance, both concurrently and across a three-year longitudinal interval. Persons aged 75–84 years, and participating in the Swedish Kungsholmen Project ( n = 105) or the Canadian Victoria Longitudinal Study ( n = 71), were examined. Results showed that in both samples, while the cross-sectional relationship was non-significant, longitudinal change in perceptions of subjective health were related to change in episodic memory performance. Next, the two samples were combined in additional analyses. Here, results further revealed that the associations between longitudinal change in subjective health and memory performance generalized across samples independently of demographic, changing physical health status, and subjective memory decline differences. Thus, the present findings suggest that subjective health may be added to the growing number of individual-difference variables that are predictive of episodic memory change in very old age.

scholarly journals Episodic memory enhancement versus impairment is determined by contextual similarity across events

2021 ◽  
Author(s):  
Wouter Cox ◽  
Simone Dobbelaar ◽  
Martijn Meeter ◽  
Merel Kindt ◽  
Vanessa van Ast
Keyword(s):  
Episodic Memory ◽  
Environmental Context ◽  
Local Context ◽  
Integration Theory ◽  
Memory Interference ◽  
Memory Change ◽  
Memory Integration ◽  
Context Similarity ◽  
Mechanisms Of Memory ◽  
Underlying Mechanisms

For over a century, stability of environmental context across related episodes has been considered a source of memory interference. However, contemporary memory integration theory generates a diametrically opposite prediction. Here, we aimed to resolve this discrepancy by manipulating local context similarity across temporally disparate but related episodes, and testing the direction and underlying mechanisms of memory change. A series of experiments show that contextual stability produces memory integration and marked reciprocal strengthening, whereas variable context results in one memory to dominate at a related memory’s expense. Intriguingly, however, retrieval patterns reversed when the original encoding contexts were reintroduced during memory recall. These observations (i) identify environmental context during new learning and subsequent recall as opposing determinants in the volatility of memory, (ii) present a challenge to several classic and modern theories on episodic memory change, and (iii) reconcile paradoxical predictions of memory interference and integration.

Association of KIBRA rs17070145 polymorphism with episodic memory in the early stages of a human neurodevelopmental disorder

2014 ◽  
Vol 220 (1-2) ◽  
pp. 37-43 ◽  
Author(s):  
Nora S. Vyas ◽  
Kwangmi Ahn ◽  
Daniel R. Stahl ◽  
Paul Caviston ◽  
Mima Simic ◽  
...  
Keyword(s):  
Episodic Memory ◽  
Neurodevelopmental Disorder ◽  
Early Stages

scholarly journals Episodic memory enhancement versus impairment is determined by contextual similarity across events

2021 ◽  
Vol 118 (48) ◽  
pp. e2101509118
Author(s):  
Wouter R. Cox ◽  
Simone Dobbelaar ◽  
Martijn Meeter ◽  
Merel Kindt ◽  
Vanessa A. van Ast
Keyword(s):  
Episodic Memory ◽  
Local Context ◽  
Integration Theory ◽  
Memory Interference ◽  
Memory Change ◽  
Memory Integration ◽  
Context Similarity ◽  
Series Of Experiments ◽  
Mechanisms Of Memory ◽  
Underlying Mechanisms

For over a century, stability of spatial context across related episodes has been considered a source of memory interference, impairing memory retrieval. However, contemporary memory integration theory generates a diametrically opposite prediction. Here, we aimed to resolve this discrepancy by manipulating local context similarity across temporally disparate but related episodes and testing the direction and underlying mechanisms of memory change. A series of experiments show that contextual stability produces memory integration and marked reciprocal strengthening. Variable context, conversely, seemed to result in competition such that new memories become enhanced at the expense of original memories. Interestingly, these patterns were virtually inverted in an additional experiment where context was reinstated during recall. These observations 1) identify contextual similarity across original and new memories as an important determinant in the volatility of memory, 2) present a challenge to classic and modern theories on episodic memory change, and 3) indicate that the sensitivity of context-induced memory changes to retrieval conditions may reconcile paradoxical predictions of interference and integration theory.

scholarly journals Episodic memory change in late adulthood: Generalizability across samples and performance indices

2004 ◽  
Vol 32 (5) ◽  
pp. 768-778 ◽  
Author(s):  
Roger A. Dixon ◽  
Åke Wahlin ◽  
Scott B. Maitland ◽  
David F. Hultsch ◽  
Christopher Hertzog ◽  
...  
Keyword(s):  
Episodic Memory ◽  
Performance Indices ◽  
Late Adulthood ◽  
Memory Change ◽  
And Performance

Sociocultural memory development research drives new directions in gadgetry science

2019 ◽  
Vol 42 ◽  
Author(s):  
Penny Van Bergen ◽  
John Sutton
Keyword(s):  
Episodic Memory ◽  
Autobiographical Memory ◽  
Developmental Psychology ◽  
Cross Cultural ◽  
Memory Development ◽  
Development Research ◽  
Cultural Research ◽  
New Directions ◽  
Cross Cultural Research

Abstract Sociocultural developmental psychology can drive new directions in gadgetry science. We use autobiographical memory, a compound capacity incorporating episodic memory, as a case study. Autobiographical memory emerges late in development, supported by interactions with parents. Intervention research highlights the causal influence of these interactions, whereas cross-cultural research demonstrates culturally determined diversity. Different patterns of inheritance are discussed.

Let's call a memory a memory, but what kind?

2019 ◽  
Vol 42 ◽  
Author(s):  
Nazim Keven
Keyword(s):  
Episodic Memory ◽  
Animal Cognition ◽  
The World

Abstract Hoerl & McCormack argue that animals cannot represent past situations and subsume animals’ memory-like representations within a model of the world. I suggest calling these memory-like representations as what they are without beating around the bush. I refer to them as event memories and explain how they are different from episodic memory and how they can guide action in animal cognition.

Spherulitic crystal growth in the prodissoconch larval of Crassostrea virginica

1983 ◽  
Vol 41 ◽  
pp. 518-519
Author(s):  
George G. Cocks ◽  
Louis Leibovitz ◽  
DoSuk D. Lee
Keyword(s):  
Crystal Structure ◽  
Crassostrea Virginica ◽  
Crystal Orientation ◽  
Developmental Changes ◽  
Gastrula Stage ◽  
Orthorhombic Crystal ◽  
Orthorhombic Crystal Structure ◽  
Stages Of Growth ◽  
Early Stages ◽  
Initial Deposition

Our understanding of the structure and the formation of inorganic minerals in the bivalve shells has been considerably advanced by the use of electron microscope. However, very little is known about the ultrastructure of valves in the larval stage of the oysters. The present study examines the developmental changes which occur between the time of conception to the early stages of Dissoconch in the Crassostrea virginica(Gmelin), focusing on the initial deposition of inorganic crystals by the oysters.The spawning was induced by elevating the temperature of the seawater where the adult oysters were conditioned. The eggs and sperm were collected separately, then immediately mixed for the fertilizations to occur. Fertilized animals were kept in the incubator where various stages of development were stopped and observed. The detailed analysis of the early stages of growth showed that CaCO3 crystals(aragonite), with orthorhombic crystal structure, are deposited as early as gastrula stage(Figuresla-b). The next stage in development, the prodissoconch, revealed that the crystal orientation is in the form of spherulites.

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