scholarly journals Perceptual similarity and working memory load in visual search for multiple targets

2018 ◽  
Vol 18 (10) ◽  
pp. 1110
Author(s):  
Elena Gorbunova ◽  
Kirill Kozlov
2017 ◽  
Vol 10 (1) ◽  
pp. 38-52 ◽  
Author(s):  
E.S. Gorbunova

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.


2019 ◽  
Vol 12 (3) ◽  
pp. 119-134
Author(s):  
K.S. Kozlov ◽  
E.S. Gorbunova

Subsequent search misses can occur during visual search for several targets. SSM is a decrease in accuracy at finding a second target after successful detection of a first one. Two experiments investigated the effect of object working memory load, target stimuli similarity and the similarity of stimuli in visual search task and working memory tasks on the SSM. It was found that targets perceptual similarity is significant, as well as memory load in case of working memory task and visual search task stimuli similarity. In addition, we found a significant interaction between working memory load and number of shared features between two target stimuli, which may indicate a common mechanism underlying the role of working memory load and perceptual similarity factors.


Author(s):  
Angela A. Manginelli ◽  
Franziska Geringswald ◽  
Stefan Pollmann

When distractor configurations are repeated over time, visual search becomes more efficient, even if participants are unaware of the repetition. This contextual cueing is a form of incidental, implicit learning. One might therefore expect that contextual cueing does not (or only minimally) rely on working memory resources. This, however, is debated in the literature. We investigated contextual cueing under either a visuospatial or a nonspatial (color) visual working memory load. We found that contextual cueing was disrupted by the concurrent visuospatial, but not by the color working memory load. A control experiment ruled out that unspecific attentional factors of the dual-task situation disrupted contextual cueing. Visuospatial working memory may be needed to match current display items with long-term memory traces of previously learned displays.


2015 ◽  
Vol 8 (2) ◽  
pp. 21-35 ◽  
Author(s):  
B.B. Velichkovsky ◽  
A.I. Izmalkova

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.


2012 ◽  
Vol 12 (9) ◽  
pp. 1145-1145 ◽  
Author(s):  
M. Chirimuuta ◽  
K. Tsvetanov ◽  
G. Humphreys

1988 ◽  
Vol 40 (4) ◽  
pp. 737-756 ◽  
Author(s):  
Harvey Babkoff ◽  
Mario Mikulincer ◽  
Tamir Caspy ◽  
Daniel Kempinski ◽  
Helen Sing

Three levels of working memory load of a visual search (Memory and Search) task were tested in a 72-hour sleep deprivation paradigm. General performance and accuracy decrease over time with monotonic and rhythmic components. The signal detection discriminability index, d', decreases monotonically with rhythmic variations. The index of response bias, β, shows no monotonic trend, but significant circadian rhythmicity. The extent of the monotonic and rhythmic changes in accuracy and in d’ is directly related to the level of working memory load. The amplitude of the circadian component of accuracy and d’ is enhanced for the higher levels of working memory load. The implication of potentiated circadian rhythmicity as a function of cumulative sleep loss is discussed.


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