scholarly journals Effects of N-Methyl-D-aspartate (NMDA) antagonists ketamine, methoxetamine, and phencyclidine on the odor span test of working memory in rats.

2018 ◽  
Vol 26 (1) ◽  
pp. 6-17 ◽  
Author(s):  
Michael J. Mathews ◽  
Ralph N. Mead ◽  
Mark Galizio
Keyword(s):  
Working Memory ◽  
Nmda Antagonists ◽  
Span Test ◽  
Odor Span

Neurocognitive Constructs Underlying Executive Control in Statistically-Determined Mild Cognitive Impairment

2021 ◽  
Vol 82 (1) ◽  
pp. 5-16 ◽  
Author(s):  
Sheina Emrani ◽  
Melissa Lamar ◽  
Catherine Price ◽  
Satya Baliga ◽  
Victor Wasserman ◽  
...  
Keyword(s):  
Working Memory ◽  
Cognitive Impairment ◽  
Mild Cognitive Impairment ◽  
Inhibitory Control ◽  
Executive Control ◽  
Serial Order ◽  
Temporal Organization ◽  
Executive Attention ◽  
Span Test ◽  
Preparatory Set

Background: The model of executive attention proposes that temporal organization, i.e., the time necessary to bring novel tasks to fruition is an important construct that modulates executive control. Subordinate to temporal organization are the constructs of working memory, preparatory set, and inhibitory control. Objective: The current research operationally-defined the constructs underlying the theory of executive attention using intra-component latencies (i.e., reaction times) from a 5-span backward digit test from patients with suspected mild cognitive impairment (MCI). Methods: An iPad-version of the Backward Digit Span Test (BDT) was administered to memory clinic patients. Patients with (n = 22) and without (n = 36) MCI were classified. Outcome variables included intra-component latencies for all correct 5-span serial order responses. Results: Average total time did not differ. A significant 2-group by 5-serial order latency interaction revealed the existence of distinct time epochs. Non-MCI patients produced slower latencies on initial (position 2-working memory/preparatory set) and latter (position 4-inhibitory control) correct serial order responses. By contrast, patients with MCI produced a slower latency for middle serial order responses (i.e., position 3-preparatory set). No group differences were obtained for incorrect 5-span test trials. Conclusion: The analysis of 5-span BDT serial order latencies found distinct epochs regarding how time was allocated in the context of successful test performance. Intra-component latencies obtained from tests assessing mental re-ordering may constitute useful neurocognitive biomarkers for emergent neurodegenerative illness.

scholarly journals Working Memory Impairment in Euthymic State of Bipolar Disorder

2019 ◽  
Vol 8 (1) ◽  
pp. 50-54
Author(s):  
A Jha ◽  
D Joshi ◽  
P Kattel ◽  
P Koirala
Keyword(s):  
Bipolar Disorder ◽  
Working Memory ◽  
Memory Impairment ◽  
Digit Span ◽  
Case Group ◽  
Clinical Variables ◽  
Digit Span Test ◽  
Span Test ◽  
The Mean ◽  
Bipolar Patients

Introduction: Cognitive deficits in bipolar disorders persist after the subsidence of active symptoms. This study was carried out to assess the working memory of patients with bipolar disorder in euthymic state. Material And Method: Forty euthymic bipolar patients attending a tertiary care mental hospital with equal number of matched controls in terms of age, sex and education were included in the study. Working memory assessments was done using WAIS-III digit span subtest. Results: The mean of total digit span test for case group was 8.48±2.04 similarly it was 10.33±2.32 for the controls. The result showed that the mean digit span of cases and control groups are significantly different (p value of < 0.01). The Pearsons correlation between the clinical variables and working memory test in euthymic bipolar patients (case group) was found that the total score for digit span test was negatively correlated with all other clinical variables However, this correlation was found to be non-significant. Conclusion: The working memory impairment persists in remitted bipolar disorder patients and this may represent underlying trait abnormality not the state abnormality.

Distinction between Visuo-Spatial Short-Term-Memory and Working Memory Span Tasks

2006 ◽  
Vol 65 (1) ◽  
pp. 37-55 ◽  
Author(s):  
Thierry Lecerf ◽  
Jean-Luc Roulin
Keyword(s):  
Working Memory ◽  
Fluid Intelligence ◽  
Short Term Memory ◽  
Memory Span ◽  
Item Difficulty ◽  
Short Term ◽  
Term Memory ◽  
Spatial Span ◽  
Span Test ◽  
Span Tasks

Six experiments are presented that examined the constraints underlying performance in two visuo-spatial span tasks. In the Location Span Test (LST), participants have to memorize the cells of a 5×5 matrix containing arrows, while in the Direction Span Test (DST) they have to memorize the cells pointed at by arrows. The main objective was to assess whether both tasks were similarly influenced by experimental factors. Results showed that performance improved with longer encoding time (1-s. vs. 3-s) only for the DST. Maintenance interval (0-s vs. 5-s) and order of item difficulty (ascending vs. descending) have no effect either on the LST or on the DST. Another experiment indicated that the DST is a better predictor of fluid intelligence. These results seem to provide evidence that the LST and the DST relate to different constructs. Implications of these findings for the distinction between short-term and working memory span tasks are discussed.

Phonological short-term memory, working memory and foreign language performance in intensive language learning

2008 ◽  
Vol 11 (2) ◽  
pp. 261-271 ◽  
Author(s):  
JUDIT KORMOS ◽  
ANNA SÁFÁR
Keyword(s):  
Working Memory ◽  
Language Learning ◽  
Short Term Memory ◽  
Digit Span ◽  
Working Memory Capacity ◽  
Memory Capacity ◽  
Short Term ◽  
Term Memory ◽  
Digit Span Test ◽  
Span Test

In our research we addressed the question what the relationship is between phonological short-term and working memory capacity and performance in an end-of-year reading, writing, listening, speaking and use of English test. The participants of our study were 121 secondary school students aged 15–16 in the first intensive language training year of a bilingual education program in Hungary. The participants performed a non-word repetition test and took a Cambridge First Certificate Exam. Fifty students were also tested with a backward digit span test, measuring their working memory capacity. Our study indicates that phonological short-term memory capacity plays a different role in the case of beginners and pre-intermediate students in intensive language learning. The backward digit span test correlated very highly with the overall English language competence, as well as with reading, listening, speaking and use of English (vocabulary and grammar) test scores.

scholarly journals Effect of memory load on eye movement control: A study using the reading span test

2014 ◽  
Vol 7 (5) ◽  
Author(s):  
Miyuki Azuma ◽  
Takehiro Minamoto ◽  
Ken Yaoi ◽  
Mariko Osaka ◽  
Naoyuki Osaka
Keyword(s):  
Working Memory ◽  
Eye Movement ◽  
Memory Load ◽  
Movement Control ◽  
Fixation Time ◽  
Reading Span ◽  
Load Effect ◽  
Eye Movement Control ◽  
Span Test ◽  
Memory Resources

We investigated the effect of memory load on attentional control using the Reading Span Test (RST), a task that requires working memory capacity. Previous studies have shown that a shortage of working memory resources leads to a deficit of inhibition of taskirrelevant information and that memory load affects eye movement control. Here, we recorded eye movement and integrated it with RST performance. Total fixation time and the number of regressions showed a memory load effect with the to-be-remembered word, and RST performance was also affected under high memory load. We concluded that a shortage of working memory resources caused by memory load prevents flexible eye movement control and may cause a deficit in inhibitory control based on intrusion errors.

scholarly journals Working memory and reading comprehension: Measurement through reading span test and cloze type test for high school and university levels

Apertura ◽  
2016 ◽  
Vol 8 (2) ◽  
pp. 38-53
Author(s):  
Ismael Esquivel Gámez ◽  
Waltraud Martínez Olvera ◽  
Rafael Córdoba del Valle ◽  
Carlos Reyes Gutiérrez
Keyword(s):  
High School ◽  
Working Memory ◽  
Reading Comprehension ◽  
Reading Span ◽  
Span Test ◽  
Type Test

scholarly journals Working memory and inhibitory control across the life span: Intrusion errors in the Reading Span Test

2009 ◽  
Vol 37 (3) ◽  
pp. 336-345 ◽  
Author(s):  
Christelle Robert ◽  
Erika Borella ◽  
Delphine Fagot ◽  
Thierry Lecerf ◽  
Anik de Ribaupierre
Keyword(s):  
Working Memory ◽  
Life Span ◽  
Inhibitory Control ◽  
Reading Span ◽  
Span Test ◽  
Intrusion Errors
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