Parameter invariance in short-term associative memory.

1974 ◽  
Vol 103 (3) ◽  
pp. 475-488 ◽  
Author(s):  
Bennet B. Murdock ◽  
J. Elisabeth Wells
Keyword(s):  
Associative Memory ◽  
Short Term ◽  
Parameter Invariance

scholarly journals Optimizing Subjective Cognitive Decline to Detect Early Cognitive Dysfunction

2021 ◽  
Vol 80 (3) ◽  
pp. 1185-1196
Author(s):  
Silvia Chapman ◽  
Preeti Sunderaraman ◽  
Jillian L. Joyce ◽  
Martina Azar ◽  
Leigh E. Colvin ◽  
...  
Keyword(s):  
Cognitive Decline ◽  
Cognitive Dysfunction ◽  
Associative Memory ◽  
Short Term Memory ◽  
Subjective Cognitive Decline ◽  
Short Term ◽  
Term Memory ◽  
Memory Binding ◽  
Preclinical Ad ◽  
List Learning

Background: The utility of subjective cognitive decline (SCD) as an indicator of preclinical AD is overshadowed by its inconsistent association with objective cognition. Objective: This study examines if manipulations of SCD measurement affect its association with early cognitive dysfunction characteristic of preclinical AD. Methods: Cognitively healthy older adults (n = 110) completed SCD questionnaires that elicited complaints in general, compared to 5 years ago (retrospective SCD) and compared to their peers (age-anchored SCD) in binary and Likert scales. Outcome cognitive tasks included an associative memory task (Face-Name Test), a visual short-term memory binding task (STMB test), and a clinical neuropsychological list learning test (Selective Reminder Test). Results: SCD complaints, when compared to age-matched peers (age-anchored SCD) were endorsed less frequently than complaints compared to 5 years ago (retrospective SCD) (p < 0.01). In demographically adjusted regressions, age-anchored ordinal-rated SCD was associated with short term memory binding (β= –0.22, p = 0.040, CI = –0.45, –0.01), associative memory (β= –0.26, p = 0.018, CI = –0.45, –0.06), and list learning (β= –0.31, p = 0.002, CI = –0.51, –0.12). Retrospective and general ordinal-rated SCD was associated with associative memory (β= –0.25, p = 0.012, CI = –0.44, –0.06; β= –0.29, p = 0.003, CI = –0.47, –0.10) and list learning only (β= –0.25, p = 0.014, CI = –0.45, –0.05; β= –0.28, p = 0.004, CI = –0.48, –0.09). Conclusion: Ordinal age-anchored SCD appears better suited than other SCD measurements to detect early cognitive dysfunction characteristic of preclinical AD.

scholarly journals C. elegans Positive Butanone Learning, Short-term, and Long-term Associative Memory Assays

10.3791/2490 ◽  
2011 ◽  
Author(s):  
Amanda Kauffman ◽  
Lance Parsons ◽  
Geneva Stein ◽  
Airon Wills ◽  
Rachel Kaletsky ◽  
...  
Keyword(s):  
Associative Memory ◽  
Short Term ◽  
C Elegans

Altered hippocampal short-term plasticity and associative memory in synaptotagmin IV (?/?) mice

Hippocampus ◽  
2004 ◽  
Vol 14 (8) ◽  
pp. 964-974 ◽  
Author(s):  
Gregory D. Ferguson ◽  
Hongbing Wang ◽  
Harvey R. Herschman ◽  
Daniel R. Storm
Keyword(s):  
Associative Memory ◽  
Short Term ◽  
Short Term Plasticity ◽  
Synaptotagmin Iv

Input and output interference in short-term associative memory.

1966 ◽  
Vol 72 (1) ◽  
pp. 145-150 ◽  
Author(s):  
Endel Tulving ◽  
Tannis Y. Arbuckle
Keyword(s):  
Associative Memory ◽  
Output Interference ◽  
Short Term ◽  
Input And Output

Stability Analysis on Sparsely Encoded Associative Memory with Short-Term Synaptic Dynamics

2017 ◽  
Vol 27 (10) ◽  
pp. 1730034
Author(s):  
Muyuan Xu ◽  
Yuichi Katori ◽  
Kazuyuki Aihara
Keyword(s):  
Stability Analysis ◽  
Associative Memory ◽  
Memory Retrieval ◽  
Field Model ◽  
Mean Field ◽  
Detailed Structure ◽  
Short Term ◽  
Mean Field Model ◽  
Synaptic Dynamics ◽  
The Stability

This study investigates the stability of sparsely encoded associative memory in a network composed of stochastic neurons. The incorporation of short-term synaptic dynamics significantly changes the stability with respect to synaptic properties. Various states including static and oscillatory states are found in the network dynamics. Specifically, the sparseness of memory patterns raises the problem of spurious states. A mean field model is used to analyze the detailed structure in the stability and show that the performance of memory retrieval is recovered by appropriate feedback.

scholarly journals Individual differences in memory predict changes in breakdown and repair fluency but not speed fluency: A short-term fluency training intervention study

2021 ◽  
pp. 1-27
Author(s):  
Yuichi Suzuki
Keyword(s):  
Associative Memory ◽  
Intervention Study ◽  
Short Term Memory ◽  
Attention Control ◽  
Oral Narrative ◽  
Repetition Condition ◽  
Task Repetition ◽  
Fluency Training ◽  
Short Term ◽  
Oral Fluency

Abstract The purpose of this intervention study is to reveal the extent to which memory-related aptitudes are implicated in the second language (L2) fluency development fostered by task repetition. English L2 learners are engaged in oral narrative tasks three times per day under two different 3-day task repetition schedules: blocked (Day 1: A-A-A, Day 2: B-B-B, Day 3: C-C-C) versus interleaved (Day 1: A-B-C, Day 2: A-B-C, Day 3: A-B-C). Their phonological short-term memory (PSTM), attention control, and associative memory were used as predictors of fluency changes measured through speed, breakdown, and repair fluency behaviors. Results showed that while the articulation rate change was not explained by any of the examined predictors, breakdown and repair fluency were predicted by different memory components. Specifically, PSTM was associated with mid-clause pause decrease during the training phase, while associative memory was linked to the increase in clause-final pauses in the posttest. Attention control, as well as PSTM, was related to greater repair frequency in the posttest, indicating increased learners’ attention to speech monitoring. Furthermore, PSTM and associative memory contributed to reducing breakdown fluency in the blocked repetition condition only, suggesting that learners can capitalize on their memory for improving oral fluency by engaging in blocked practice.

Short-Term Recognition Memory for Single Letters and Phonemic Similarity of Retroactive Interference

1966 ◽  
Vol 18 (1) ◽  
pp. 55-62 ◽  
Author(s):  
Wayne A. Wickelgren
Keyword(s):  
Recognition Memory ◽  
Associative Memory ◽  
False Recognition ◽  
Retroactive Interference ◽  
Memory System ◽  
Single Letter ◽  
The Other ◽  
Vowel Sound ◽  
Short Term ◽  
Phonemic Similarity

Copying 12 letters produces more retroactive interference in recognition memory for a single letter when the interference letters possess a vowel sound in common with the letter to be remembered than when they do not. Compared to interference lists that do not include the presented letter, inclusion in the interference list of the letter to be remembered improves recognition memory when the other interference letters have no vowel sound in common with the letter to be remembered, but not otherwise. False recognition rates are greater when the test letter contains a vowel sound in common with the presented letter than when the vowel sounds of these two letters are different. The findings are in complete accord with analogous findings for short-term recall and indicate that short-term recognition memory uses the same phonemic-associative memory system as short-term recall.

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