scholarly journals Spatial working memory loads can reduce search efficiency but not the rates of rapid resumption in interrupted visual search tasks

2010 ◽  
Vol 7 (9) ◽  
pp. 685-685 ◽  
Author(s):  
J.-W. Ahn ◽  
A. Lleras
Keyword(s):  
Working Memory ◽  
Visual Search ◽  
Spatial Working Memory ◽  
Search Efficiency ◽  
Search Tasks

scholarly journals Spatial working memory in visual search for multiple targets

2017 ◽  
Vol 10 (1) ◽  
pp. 38-52 ◽  
Author(s):  
E.S. Gorbunova
Keyword(s):  
Working Memory ◽  
Visual Search ◽  
Alternative Explanation ◽  
Spatial Working Memory ◽  
Memory Load ◽  
Search Efficiency ◽  
Working Memory Load ◽  
Multiple Targets ◽  
Subsequent Search Misses

The article investigated the role of spatial working memory in visual search for multiple targets, in particular, in subsequent search misses effect. This phenomenon is the second target omission after the first target has been found in visual search task. One of the theoretical interpretations of subsequent search misses is the lack of resources (attention and/or working memory) after the first target is found. Experiment investigated dual-target visual search efficiency in standard conditions and with additional spatial working memory load. Additional working memory load did not have any significant impact in multiple target visual search efficiency. The results can due to the role of object, but not spatial working memory in this task. Alternative explanation assumes using special tools and strategies.

scholarly journals THE EFFECT OF DIFFERENT SPATIAL WORKING MEMORY LOADS ON VISUAL SEARCH

2021 ◽  
Author(s):  
Margit Höfler ◽  
◽  
Sebastian A. Bauch ◽  
Elisabeth Englmair ◽  
Julia Friedmann-Eibler ◽  
...  
Keyword(s):  
Working Memory ◽  
Visual Search ◽  
Spatial Working Memory ◽  
Memory Load ◽  
Search Time ◽  
Load Condition ◽  
High Load ◽  
Search Performance ◽  
Search Efficiency ◽  
Spatial Locations

"Working memory (WM) has been shown to be an important factor in visual search. For instance, there is evidence that both spatial and visual WM load lead to a decrease in search performance, resulting in a longer time to complete a search. However, the findings regarding search efficiency, i.e., search time as a function of display size, are less clear. This measure has been reported to be affected by spatial but not visual WM load. In three experiments, with approximately 20 participants each, we tested how two different types of spatial WM load affect visual search in terms of search performance and efficiency. In all experiments, participants were asked to memorize the spatial locations of two (low load) or four items (high load) presented either serially (Experiment 1) or simultaneously (Experiments 2 and 3). After that, they had to search for a target letter in a display of 5, 10 or 15 letters. In Experiment 3, participants additionally performed a verbal WM task. A control condition with no memory load (search only) was also included in each experiment. The results showed that, compared to the search-only condition, search times increased when spatial load was added. This was regardless of the type of spatial WM load. No search-time differences were found between the low and high-load condition. The additional verbal WM task had no effect on search performance. Furthermore, and in contrast to previous findings, search efficiency was not affected by either type of spatial WM load. These results suggest that visual search performance, but not search efficiency, is affected by spatial WM load."

scholarly journals Visual working memory representations are shifted toward irrelevant features of distractors in intervening visual search tasks

2019 ◽  
Vol 19 (10) ◽  
pp. 311b
Author(s):  
Zachary A Lively ◽  
Gavin JP Ng ◽  
Simona Buetti ◽  
Alejandro Lleras
Keyword(s):  
Working Memory ◽  
Visual Search ◽  
Visual Working Memory ◽  
Search Tasks ◽  
Memory Representations

Measuring search efficiency in complex visual search tasks: Global and local clutter.

2010 ◽  
Vol 16 (3) ◽  
pp. 238-250 ◽  
Author(s):  
Melissa R. Beck ◽  
Maura C. Lohrenz ◽  
J. Gregory Trafton
Keyword(s):  
Visual Search ◽  
Search Efficiency ◽  
Search Tasks ◽  
Global And Local

scholarly journals Working-memory capacity predicts the executive control of visual search among distractors: The influences of sustained and selective attention

2009 ◽  
Vol 62 (7) ◽  
pp. 1430-1454 ◽  
Author(s):  
Bradley J. Poole ◽  
Michael J. Kane
Keyword(s):  
Working Memory ◽  
Visual Search ◽  
Target Location ◽  
Memory Span ◽  
Working Memory Capacity ◽  
Memory Capacity ◽  
Attentional Focus ◽  
Search Tasks ◽  
Span Tasks ◽  
Target Locations

Variation in working-memory capacity (WMC) predicts individual differences in only some attention-control capabilities. Whereas higher WMC subjects outperform lower WMC subjects in tasks requiring the restraint of prepotent but inappropriate responses, and the constraint of attentional focus to target stimuli against distractors, they do not differ in prototypical visual-search tasks, even those that yield steep search slopes and engender top-down control. The present three experiments tested whether WMC, as measured by complex memory span tasks, would predict search latencies when the 1–8 target locations to be searched appeared alone, versus appearing among distractor locations to be ignored, with the latter requiring selective attentional focus. Subjects viewed target-location cues and then fixated on those locations over either long (1,500–1,550 ms) or short (300 ms) delays. Higher WMC subjects identified targets faster than did lower WMC subjects only in the presence of distractors and only over long fixation delays. WMC thus appears to affect subjects’ ability to maintain a constrained attentional focus over time.

scholarly journals Effect of verbal working memory load during the oculomotor activity in visual search

2015 ◽  
Vol 8 (2) ◽  
pp. 21-35 ◽  
Author(s):  
B.B. Velichkovsky ◽  
A.I. Izmalkova
Keyword(s):  
Working Memory ◽  
Visual Search ◽  
Spatial Working Memory ◽  
Memory Load ◽  
Mutual Influence ◽  
Verbal Working Memory ◽  
Working Memory Load ◽  
Visual Spatial ◽  
Visual Spatial Working Memory ◽  
Oculomotor Activity

The structure of working memory has components responsible for the storage of verbal and visualspatial information; despite the fairly detailed study of the functions and mechanisms of their work, the question of their mutual influence is still open. Studies on the verbal working memory load influence on visual search performance (a task requiring the use of visual-spatial working memory resources) it was found that the load on the verbal working memory leads to increased efficiency of target detection. The results of the analysis of oculomotor activity during visual search also point out that the implementation of such tasks under verbal working memory load is accompanied by an increase in cognitive tension and of the degree of search automaticity. The results may indicate the interaction of verbal and visual-spatial working memory components that share non-specific cognitive resources.

scholarly journals Spatial working memory impedes search efficiency in interrupted but not continuous scene search

2018 ◽  
Vol 18 (10) ◽  
pp. 241
Author(s):  
Mark Mills ◽  
Matthew Hilchey ◽  
Jay Pratt
Keyword(s):  
Working Memory ◽  
Spatial Working Memory ◽  
Search Efficiency

scholarly journals Current and future goals are represented in opposite patterns in object-selective cortex

2018 ◽  
Author(s):  
Anouk M. van Loon ◽  
Katya Olmos Solis ◽  
Johannes J. Fahrenfort ◽  
Christian N. L. Olivers
Keyword(s):  
Working Memory ◽  
Visual Search ◽  
Adaptive Behavior ◽  
Target Object ◽  
Neuronal Ensembles ◽  
Search Tasks ◽  
Future Goals ◽  
Memory Representations ◽  
The Brain

AbstractAdaptive behavior requires the separation of current from future goals in working memory. We used fMRI of object-selective cortex to determine the representational (dis)similarities of memory representations serving current and prospective perceptual tasks. Participants remembered an object drawn from three possible categories as the target for one of two consecutive visual search tasks. A cue indicated whether the target object should be looked for first (currently relevant), second (prospectively relevant), or if it could be forgotten (irrelevant). Prior to the first search, representations of current, prospective and irrelevant objects were similar, with strongest decoding for current representations compared to prospective (Experiment 1) and irrelevant (Experiment 2). Remarkably, during the first search, prospective representations could also be decoded, but revealed anti-correlated voxel patterns compared to currently relevant representations of the same category. We propose that the brain separates current from prospective memories within the same neuronal ensembles through opposite representational patterns.

Deficits of visual search and spatial working memory after cerebellar infarction

2005 ◽  
Vol 32 (S 4) ◽  
Author(s):  
B Machner ◽  
A Sprenger ◽  
D Kömpf ◽  
W Heide
Keyword(s):  
Working Memory ◽  
Visual Search ◽  
Spatial Working Memory ◽  
Cerebellar Infarction
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