scholarly journals Comparative Study of Visual & Auditory Memory between Psychology & Non-Psychology Students: Testing a Stream Hypothesis

2017 ◽  
Vol 4 (2) ◽  
Author(s):  
Dr. Rajendra Kumar Sharma ◽  
Mr. Vikas Sharma
Keyword(s):  
Reaction Time ◽  
Undergraduate Students ◽  
Short Term Memory ◽  
Psychology Students ◽  
Auditory Memory ◽  
Short Term ◽  
Strong Difference ◽  
The Mean ◽  
And Storage ◽  
Mean Reaction Time

Background and Objectives: The process of retention and storage of any kind of information is known as Memory. Present study was conducted to compare the Visual & Auditory Short term memory (STM) in Psychology & Non psychology Students. Materials and Methods: After appropriate consent from students and department. The study comprised of 60 students (30 Psychology, 30 non-psychology/other stream students ) aged 16-20 years of Amity University Gwalior, M.P included ,students having infirmities (Visual or Auditory) were excluded. Reaction time for audiovisual exposures to recalling is noted in all ten subtests. Results: There is a strong difference between the retention and storing capacity of visual STM and auditory STM among both groups. Results: There is a strong difference between the retention and storing capacity of visual STM and auditory STM (p<0.001) between both groups. The mean reaction time is more for long words/sentences than short words. Short words are remembered more accurately than long words by both groups. Interpretation and Conclusion: The visual STM has a short mean reaction time and more accuracy than auditory STM. STM and working memory plays an important role in the learning processes of both groups of undergraduate students.

Nothing left in store . . . but how do we measure attentional capacity?

2001 ◽  
Vol 24 (1) ◽  
pp. 132-133
Author(s):  
Sergio Morra
Keyword(s):  
Working Memory ◽  
Procedural Knowledge ◽  
Short Term Memory ◽  
Memory Development ◽  
Compelling Evidence ◽  
Short Term ◽  
Term Memory ◽  
Focal Attention ◽  
And Storage

I compare the concepts of “activation” and “storage” as foundations of short-term memory, and suggest that an attention-based view of STM does not need to posit specialized short-term stores. In particular, no compelling evidence supports the hypothesis of time-limited stores. Identifying sources of activation, examining the role of activated procedural knowledge, and studying working memory development are central issues in modelling capacity-limited focal attention.

Effect of Physical Exhaustion on Cognitive Functioning

1997 ◽  
Vol 84 (1) ◽  
pp. 291-298 ◽  
Author(s):  
Y-A. Féry ◽  
A. Ferry ◽  
A. Vom Hofe ◽  
M. Rieu
Keyword(s):  
Reaction Time ◽  
Perceived Exertion ◽  
Short Term Memory ◽  
Strenuous Exercise ◽  
Decision Task ◽  
Short Term ◽  
Physical Effort ◽  
Difficult Decision ◽  
Central Processing ◽  
Processing Resources

Experiments utilizing reaction time to measure the effects of fatigue on cognition must discern sensitivity of peripheral and central processing to strenuous exercise. The additive factors method enables one to stipulate that if fatigue interacts with subjects' reaction time in a decision task, central processing is affected by fatigue. While pedaling at different intensities, 13 physically-fit men had to perform a series of short-term memory tests. The tests were executed during a constant workload session and a progressive workload session in which subjects pedaled until exhaustion. Subjects provided ratings on Borg's 1970 scale to measure the psychological effects of the physical effort such as perceived exertion. Allocation of processing resources was also measured to determine attentional constraints exerted by the dual-task situation. Analysis showed that decision reaction time was affected only during the exhausting bout of the progressive workload session and for the more difficult decision task. We discuss our results in the context of arousal and the allocation of processing resources.

Production Forecasting with the Interwell Interference by Integrating Graph Convolutional and Long Short-Term Memory Neural Network

2021 ◽  
pp. 1-17
Author(s):  
Enda Du ◽  
Yuetian Liu ◽  
Ziyan Cheng ◽  
Liang Xue ◽  
Jing Ma ◽  
...  
Keyword(s):  
Neural Network ◽  
Short Term Memory ◽  
Short Term ◽  
Term Memory ◽  
Production Forecasting ◽  
Temporal Correlations ◽  
Proposed Model ◽  
The Mean ◽  
Long Short Term Memory ◽  
The Impact

Summary Accurate production forecasting is an essential task and accompanies the entire process of reservoir development. With the limitation of prediction principles and processes, the traditional approaches are difficult to make rapid predictions. With the development of artificial intelligence, the data-driven model provides an alternative approach for production forecasting. To fully take the impact of interwell interference on production into account, this paper proposes a deep learning-based hybrid model (GCN-LSTM), where graph convolutional network (GCN) is used to capture complicated spatial patterns between each well, and long short-term memory (LSTM) neural network is adopted to extract intricate temporal correlations from historical production data. To implement the proposed model more efficiently, two data preprocessing procedures are performed: Outliers in the data set are removed by using a box plot visualization, and measurement noise is reduced by a wavelet transform. The robustness and applicability of the proposed model are evaluated in two scenarios of different data types with the root mean square error (RMSE), the mean absolute error (MAE), and the mean absolute percentage error (MAPE). The results show that the proposed model can effectively capture spatial and temporal correlations to make a rapid and accurate oil production forecast.

Reaction time as an index of rehearsal in short-term memory.

1969 ◽  
Vol 82 (3) ◽  
pp. 566-570 ◽  
Author(s):  
Robert F. Stanners ◽  
Gary F. Meunier ◽  
Donald B. Headley
Keyword(s):  
Reaction Time ◽  
Short Term Memory ◽  
Short Term ◽  
Term Memory

Improvement of Visual Short-Term Memory Characteristics in Monkeys: Effect of an Antioxidant

Perception ◽  
1997 ◽  
Vol 26 (1_suppl) ◽  
pp. 115-115
Author(s):  
I V Chueva ◽  
K N Dudkin
Keyword(s):  
Reaction Time ◽  
Spatial Information ◽  
Short Term Memory ◽  
Information Storage ◽  
Motor Reaction ◽  
Short Term ◽  
Systemic Injection ◽  
Term Memory ◽  
Motor Reaction Time ◽  
Visual Short Term Memory

Visual short-term memory was tested in a delayed-discrimination task on rhesus monkeys before and after a systemic injection of the antioxidant oxymetacil (4 – 7 mg kg−1). Monkeys had to discriminate stimuli with different visual attributes (colour, orientation, spatial frequency, size, contrast, spatial relationships between visual objects) by a delayed (0 – 32 s) instrumental reflex. Oxymetacil had no influence upon visual discrimination without delay, but after injection of this drug the delayed discrimination (associated with mechanisms of short-term memory) of different stimuli was significantly improved. Oxymetacil increased the duration of short-term storage of spatial information by a factor of 2 – 4 and decreased motor reaction time. Application of oxymetacil in the same doses produced similar results for delayed discrimination of black-and-white gratings, or geometrical figures of different orientations and size. The duration of short-term information storage was doubled or trebled and the motor reaction time was decreased. If monkeys were required to discriminate colour figures, the duration of short-term information storage was also doubled, being longer than for any of the other tasks. The results are discussed in terms of effects on cortical interregional synchronisation mechanisms responsible for control processes such as attention.

Reaction Time and Time Course of Neuronal Responses in MT and MST at Different Stimulus Contrasts

Perception ◽  
1996 ◽  
Vol 25 (1_suppl) ◽  
pp. 157-157 ◽  
Author(s):  
A Thiele ◽  
K-P Hoffmann
Keyword(s):  
Reaction Time ◽  
Single Cell ◽  
Single Cells ◽  
Direction Selectivity ◽  
Contrast Level ◽  
Population Activity ◽  
Temporal Area ◽  
Population Mean ◽  
The Mean ◽  
Mean Reaction Time

Direction-selective neurons from the middle temporal area (MT) and the middle superior temporal area (MST) were recorded while a monkey performed a direction discrimination task. Stimuli consisted of evenly spaced bars moving in one of the four cardinal directions. Monkey's reaction time, single-cell latency, and direction selectivity were calculated when stimuli of 53%, 24%, and 4% contrast were presented, and the monkey indicated a correct decision. Mean reaction time was 359±77 ms at 53% contrast, 391±107 ms at 24% contrast, and 582±374 ms at 4% contrast. Most neurons exhibiting direction selective responses at 53% contrast was also active at 24% contrast (MT, 99%; MST, 88%). The number of neurons still exhibiting stimulus-related activity at 4% contrast dramatically decreased (MT to 28%; MST to 41%). Shortest latencies were found at high contrast level (53% contrast; MT, 29 ms; population mean, 76±40 ms; MST, 35 ms; population mean, 77±27 ms). Single cell and population latency increased at lower contrast (4% contrast: MT minimum, 86 ms; population mean, 180±76 ms; MST minimum, 97 ms; population mean, 205±56 ms). This indicates that the mean increase in latency at the single-cell level only partially reflects the increase in reaction time (mean reaction time increased by 223 ms, while mean single-cell latency increased by ∼100 ms in MT and MST). We therefore calculated the normalised population response at different contrast levels. The maximal population activity was always found at the highest contrast level and this was set to 1. In MT it took 75 – 80 ms from stimulus onset until half maximal activity (0.5) was reached at 53% contrast. To reach 0.5 took 85 – 90 ms at 24% contrast and 205 – 210 ms at 4% contrast. For MST the respective values were 85 ms (53% contrast), 90 ms (24% contrast) and 255 ms (4%) contrast. Thus the time to reach half the maximal population activity much better reflects the reaction time than the mean of the latencies calculated from single cells.

Effect of Visual Complexity in Identification of Tachistoscopic Images

1994 ◽  
Vol 78 (3) ◽  
pp. 971-978 ◽  
Author(s):  
Robert Geheb ◽  
Keith E. Whitfield ◽  
Linda Brannon
Keyword(s):  
Reaction Time ◽  
Left Hemisphere ◽  
Right Hemisphere ◽  
Visual Complexity ◽  
Reaction Times ◽  
Right Cerebral Hemisphere ◽  
The Mean ◽  
The Times ◽  
The Right ◽  
Mean Reaction Time

The present study of gender differences in hemispheric processing involved identification of tachistoscopically presented images of varying complexity. A computerized tachistoscopic program was administered to 24 men and 34 women. Time to identify contour and detailed pictures presented to the left or right cerebral hemisphere was recorded. Mean reaction time for contour pictures was significantly faster than for detailed pictures, and mean reaction time to the right hemisphere was significantly faster than that to the left hemisphere. The mean reaction time for men to identify pictures exposed to the left hemisphere was significantly slower than that for exposure to the right hemisphere for women. The mean reaction time for both men and women to identify contour pictures exposed to the right hemisphere was significantly faster than the mean time to identify detailed pictures presented to the left hemisphere. The interaction of gender, hemisphere, and complexity was also significant in that mean reaction times for men to identify detailed pictures presented to the left hemisphere were slower than the times for women to identify contour pictures presented to the right hemisphere. The results are discussed in relation to theories about hemispheres, gender, and differences in picture features.

Non temporal determinants of bilingual memory capacity: The role of long-term representations and fluency

1998 ◽  
Vol 1 (2) ◽  
pp. 117-130 ◽  
Author(s):  
DINO CHINCOTTA ◽  
GEOFFREY UNDERWOOD
Keyword(s):  
Short Term Memory ◽  
Memory Span ◽  
Memory Capacity ◽  
Auditory Memory ◽  
Language Fluency ◽  
Short Term ◽  
Term Memory ◽  
Language Dominance ◽  
Lexical Representations ◽  
Subvocal Rehearsal

Two experiments examine the view that the variation in bilingual short-term memory capacity is determined by differential rates of subvocal rehearsal between the languages. Auditory memory span and articulation time were measured for three bilingual groups who spoke Finnish at home and Swedish at school (FS), and either Finnish (FF) or Swedish (SS) in both the home and the school. The results of Experiment 1 indicate that memory span for words varied in a lawful manner as a function of both articulation time and language dominance for SS and FF. For FS, however, an equivalent memory span between the languages was noted despite a shorter articulation time in Finnish than Swedish. Experiment 2 found that for items with no pre-existing lexical representations (nonwords), articulation time was a more reliable predictor of memory span than language dominance for all three groups. The finding that within-language memory span was greater for short items than long items shows that, ceteris paribus, bilingual short-term memory capacity is sensitive to the effects of word length in both the dominant and non-dominant language. Taken together, these findings moderate the view that bilingual short-term memory capacity is mediated exclusively by subvocal rehearsal and indicate an influential contribution from factors related to language fluency and the strength of lexico-semantic representations.

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