scholarly journals Multi‐Level Memory: Multi‐Level Long‐Term Memory Resembling Human Memory Based on Photosensitive Field‐Effect Transistors with Stable Interfacial Deep Traps (Adv. Electron. Mater. 4/2020)

2020 ◽  
Vol 6 (4) ◽  
pp. 2070018
Author(s):  
Taeyoon Kim ◽  
Jung Wook Lim ◽  
Sun Jin Yun ◽  
Seong Hyun Lee ◽  
Kwang Hoon Jung
Keyword(s):  
Field Effect ◽  
Field Effect Transistors ◽  
Human Memory ◽  
Long Term Memory ◽  
Term Memory ◽  
Deep Traps ◽  
Multi Level

scholarly journals Human sensory Long-Term Potentiation (LTP) predicts visual memory performance and is modulated by the brain-derived neurotrophic factor (BDNF) Val66Met polymorphism

2018 ◽  
Author(s):  
M.J. Spriggs ◽  
C.S. Thompson ◽  
D Moreau ◽  
N.A. McNair ◽  
C.C. Wu ◽  
...  
Keyword(s):  
Visual Memory ◽  
Memory Performance ◽  
Memory Function ◽  
Human Memory ◽  
Long Term Potentiation ◽  
Long Term Memory ◽  
Term Memory ◽  
Term Potentiation ◽  
The Relationship

BackgroundLong-Term Potentiation (LTP) is recognised as a core neuronal process underlying long-term memory. However, a direct relationship between LTP and human memory performance is yet to be demonstrated. The first aim of the current study was thus to assess the relationship between LTP and human long-term memory performance. With this also comes an opportunity to explore factors thought to mediate the relationship between LTP and long-term memory, and to gain additional insight into variations in memory function and memory decline. The second aim of the current study was to explore the relationship between LTP and memory in groups differing with respect to BDNF Val66Met; a single nucleotide polymorphism implicated in memory function.Methods28 participants (15 female) were split into three genotype groups (Val/Val, Val/Met, Met/Met) and were presented with both an EEG paradigm for inducing LTP-like enhancements of the visually-evoked response, and a test of visual memory.ResultsThe magnitude of LTP 40 minutes after induction was predictive of long-term memory performance. Additionally, the BDNF Met allele was associated with both reduced LTP and reduced memory performance.ConclusionsThe current study not only presents the first evidence for a relationship between sensory LTP and human memory performance, but also demonstrates how targeting this relationship can provide insight into factors implicated in variation in human memory performance. It is anticipated that this will be of utility to future clinical studies of disrupted memory function.

scholarly journals Long-Term Memory of Past Events in Great Apes

2019 ◽  
Vol 28 (2) ◽  
pp. 117-123 ◽  
Author(s):  
Amy Lewis ◽  
Dorthe Berntsen ◽  
Josep Call
Keyword(s):  
Great Apes ◽  
Human Memory ◽  
Long Term Memory ◽  
Term Memory ◽  
Nonhuman Animals ◽  
Cue Overload ◽  
Encoding Specificity ◽  
The Way

It has been claimed that the ability to recall personal past events is uniquely human. We review recent evidence that great apes can remember specific events for long periods of time, spanning months and even years, and that such memories can be enhanced by distinctiveness (irrespective of reinforcement) and follow a forgetting curve similar to that in humans. Moreover, recall is enhanced when apes are presented with features that are diagnostic of the event, consistent with notions of encoding specificity and cue overload in human memory. These findings are also consistent with the involuntary retrieval of past events in humans, a mode of remembering that is thought to be less cognitively demanding than voluntary retrieval. Taken together, these findings reveal further similarities between the way humans and animals remember past events and open new avenues of research on long-term memory in nonhuman animals.

The functional approach to memory

1983 ◽  
Vol 302 (1110) ◽  
pp. 239-249 ◽  
Keyword(s):  
Human Memory ◽  
Homogeneous System ◽  
Functional Approach ◽  
Long Term Memory ◽  
Short Term ◽  
Term Memory ◽  
System A ◽  
Temporary Memory

One approach to human memory is simply to test its efficiency by using different kinds of material that can be presented, retained and tested in different ways. From the pattern of results, we can draw conclusions about the kinds of mechanism involved. This approach has in recent years made a number of important advances. A decade ago the dominant view was of a single short-term or temporary memory, with a secondary or long-term memory receiving information from it. It is now clear that there are several forms of temporary memory, with different properties. Equally, longer-term memory is no longer seen as a homogeneous system. A particularly fruitful issue is the manner in which the various methods of storage interact.

Working Memory Maintenance Contributes to Long-term Memory Formation: Neural and Behavioral Evidence

2005 ◽  
Vol 17 (7) ◽  
pp. 994-1010 ◽  
Author(s):  
Charan Ranganath ◽  
Michael X. Cohen ◽  
Craig J. Brozinsky
Keyword(s):  
Working Memory ◽  
Prefrontal Cortex ◽  
Dorsolateral Prefrontal Cortex ◽  
Human Memory ◽  
Behavioral Experiment ◽  
Long Term Memory ◽  
Term Memory ◽  
Initial Stage ◽  
Dorsolateral Prefrontal

Theories of human memory have led to conflicting views regarding the relationship between working memory (WM) maintenance and episodic long-term memory (LTM) formation. Here, we tested the prediction that WM maintenance operates in two stages, and that processing during the initial stage of WM maintenance promotes successful LTM formation. Results from a functional magnetic resonance imaging study showed that activity in the dorsolateral prefrontal cortex and hippocampus during the initial stage of WM maintenance was predictive of subsequent LTM performance. In a behavioral experiment, we demonstrated that interfering with processing during the initial stage of WM maintenance impaired LTM formation. These results demonstrate that processing during the initial stage of WM maintenance directly contributes to successful LTM formation, and that this effect is mediated by a network that includes the dorsolateral prefrontal cortex and the hippocampus.

scholarly journals The capacity of human memory: Is there any limit to human memory?

2020 ◽  
Vol 1 (2) ◽  
pp. 69
Author(s):  
Ehsan Namaziandost ◽  
Meisam Ziafar
Keyword(s):  
Human Memory ◽  
Long Term Memory ◽  
Term Memory ◽  
Number Game

There exist some estimates of the capacity of human memory. Recent studies have proven the fact that Long Term Memory is subject to constant reconfigurations mostly at lower levels of neural clusters. There is no consensus on one definition for the capacity of memory. As far as retrieval of items present in memory is not the concern, it is reasonable to refrain from putting limits on capacity of human memory; otherwise, one must accept a number game which renders no fixed definite final estimation. Recently such capacity is defined as the amount of interference created by the item which must remain active in the memory.

scholarly journals Visual working memory buffers information retrieved from visual long-term memory

2017 ◽  
Vol 114 (20) ◽  
pp. 5306-5311 ◽  
Author(s):  
Keisuke Fukuda ◽  
Geoffrey F. Woodman
Keyword(s):  
Working Memory ◽  
Human Memory ◽  
Long Term Memory ◽  
High Temporal Resolution ◽  
Term Memory ◽  
Long Term Storage ◽  
New Information ◽  
Neurophysiological Activity ◽  
Term Storage

Human memory is thought to consist of long-term storage and short-term storage mechanisms, the latter known as working memory. Although it has long been assumed that information retrieved from long-term memory is represented in working memory, we lack neural evidence for this and need neural measures that allow us to watch this retrieval into working memory unfold with high temporal resolution. Here, we show that human electrophysiology can be used to track information as it is brought back into working memory during retrieval from long-term memory. Specifically, we found that the retrieval of information from long-term memory was limited to just a few simple objects’ worth of information at once, and elicited a pattern of neurophysiological activity similar to that observed when people encode new information into working memory. Our findings suggest that working memory is where information is buffered when being retrieved from long-term memory and reconcile current theories of memory retrieval with classic notions about the memory mechanisms involved.

Sign in / Sign up

Export Citation Format

Share Document