scholarly journals Does apparent size capture attention in visual search? Evidence from the Muller-Lyer illusion

2011 ◽  
Vol 11 (13) ◽  
pp. 21-21 ◽  
Author(s):  
M. J. Proulx ◽  
M. Green
Keyword(s):  
Visual Search ◽  
Apparent Size ◽  
Lyer Illusion

scholarly journals Visual search for apparent-length targets is modulated by the Müller-Lyer illusion

2004 ◽  
Vol 17 (4) ◽  
pp. 417-441 ◽  
Author(s):  
Hermann Müller ◽  
Astrid Busch
Keyword(s):  
Visual Search ◽  
Lyer Illusion ◽  
Apparent Length

The Reversed Müller-Lyer Illusion and Figure—Ground Organization Theory

Perception ◽  
1992 ◽  
Vol 21 (5) ◽  
pp. 611-626 ◽  
Author(s):  
Raiten Taya ◽  
Yasuhiro Ohashi
Keyword(s):  
Organization Theory ◽  
Apparent Size ◽  
Space Condition ◽  
Object Condition ◽  
Lyer Illusion ◽  
Focal Area ◽  
Ground Organization

When the shaft is shortened and reaches neither of the vertices of the two pairs of wings, a reversed Müller-Lyer illusion is observed: a shaft between inward-pointing wings appears to be longer than a shaft between the outward-pointing wings. In this paper it is examined whether this illusion can be explained in terms of figure—ground organization. A circle was used as the focal area, instead of a shaft or a pair of dots, so that the figure—ground character could be seen more definitely in this focal area. The apparent size of the focal circle was measured under different conditions with three variables (enclosure, wings direction, and depth). The focal circle appeared to be largest in the condition where the circle should appear most readily as a hole, ie in the single, wings-in, space condition. The circle appeared to be smallest in the condition where the circle should appear most readily as a disc, ie in the separate, wings-out, object condition. This is consistent with an explanation of the usual, as well as the reversed, Müller-Lyer illusion in terms of figure—ground organization theory.

The Apparent Size of Three-Dimensional Objects and Their Silhouettes: A Solid-Superiority Effect

Perception ◽  
1988 ◽  
Vol 17 (1) ◽  
pp. 23-30 ◽  
Author(s):  
James T Walker ◽  
M Jill Walker
Keyword(s):  
Three Dimensional ◽  
Picture Plane ◽  
Apparent Size ◽  
Solid Object ◽  
Superiority Effect ◽  
Three Dimensional Objects ◽  
Lyer Illusion ◽  
Dimensional Object

A solid object looks larger than its outline or silhouette under many viewing conditions. This solid-superiority effect may result from the assimilation or confusion of visual contours within the projection of a three-dimensional object on the picture plane. An aspect of the Müller-Lyer illusion may also play a role.

scholarly journals Apparent size, apparent depth and the Müller-Lyer illusion

1970 ◽  
Vol 7 (2) ◽  
pp. 125-128 ◽  
Author(s):  
Barrie Stacye ◽  
Raymond Pike
Keyword(s):  
Apparent Size ◽  
Apparent Depth ◽  
Lyer Illusion

Visual Search for Size-Defined Target Objects is Modulated by the Ebbinghaus Apparent-Size Illusion: Facilitatory and Inhibitory Effects of the Context Objects

Perception ◽  
10.1068/p5139 ◽  
2006 ◽  
Vol 35 (5) ◽  
pp. 671-700 ◽  
Author(s):  
Hermann J Müller ◽  
Astrid Busch
Keyword(s):  
Visual Search ◽  
Strong Influence ◽  
Apparent Size ◽  
Interference Effects ◽  
Test Context ◽  
Inhibitory Effects ◽  
Ebbinghaus Illusion ◽  
Test Circle ◽  
Colour Contrast

Five experiments were carried out to investigate under which conditions the apparent size of objects is computed and exploited optimally in visual search for size-defined targets. Observers searched for a target test circle that was retinally larger than the distractor test circles, with both types of circles surrounded by context circles modulating the apparent size of the test circles (Ebbinghaus illusion). RTs were the faster the better test circles could be differentiated from the context circles, ie with smaller numbers of context circles, larger distances, and higher lightness (or colour) contrast between test and context circles. Apparent-size modulation had a strong influence on search RTs, resulting in faster RTs with smaller, and slower RTs with larger, context circles. A model assuming overall facilitatory effects of the apparent-size modulation and interference effects arising from decreasing test-context circle discriminability can explain the present results.

The Influences of Goal and Laterality of a Prepared Hand Response on a Co-Occurring Visual Search

2015 ◽  
Vol 74 (1) ◽  
pp. 55-60 ◽  
Author(s):  
Alexandre Coutté ◽  
Gérard Olivier ◽  
Sylvane Faure
Keyword(s):  
Visual Search ◽  
Visual Target ◽  
Motor Planning ◽  
Search Performance ◽  
Response Preparation ◽  
Manual Response ◽  
Response Hand ◽  
Computer Screen ◽  
Left Hand ◽  
Manual Interaction

Computer use generally requires manual interaction with human-computer interfaces. In this experiment, we studied the influence of manual response preparation on co-occurring shifts of attention to information on a computer screen. The participants were to carry out a visual search task on a computer screen while simultaneously preparing to reach for either a proximal or distal switch on a horizontal device, with either their right or left hand. The response properties were not predictive of the target’s spatial position. The results mainly showed that the preparation of a manual response influenced visual search: (1) The visual target whose location was congruent with the goal of the prepared response was found faster; (2) the visual target whose location was congruent with the laterality of the response hand was found faster; (3) these effects have a cumulative influence on visual search performance; (4) the magnitude of the influence of the response goal on visual search is marginally negatively correlated with the rapidity of response execution. These results are discussed in the general framework of structural coupling between perception and motor planning.

Scientific Problem Solving in a Virtual Laboratory: A Comparison Between Individuals and Pairs

2008 ◽  
Vol 67 (2) ◽  
pp. 71-83 ◽  
Author(s):  
Yolanda A. Métrailler ◽  
Ester Reijnen ◽  
Cornelia Kneser ◽  
Klaus Opwis
Keyword(s):  
Visual Search ◽  
Problem Solving ◽  
Process Data ◽  
Scientific Problem ◽  
Domain Specific ◽  
Scientific Problem Solving ◽  
Before And After ◽  
Verbal Data ◽  
Psychological Knowledge ◽  
Problem Solving Task

This study compared individuals with pairs in a scientific problem-solving task. Participants interacted with a virtual psychological laboratory called Virtue to reason about a visual search theory. To this end, they created hypotheses, designed experiments, and analyzed and interpreted the results of their experiments in order to discover which of five possible factors affected the visual search process. Before and after their interaction with Virtue, participants took a test measuring theoretical and methodological knowledge. In addition, process data reflecting participants’ experimental activities and verbal data were collected. The results showed a significant but equal increase in knowledge for both groups. We found differences between individuals and pairs in the evaluation of hypotheses in the process data, and in descriptive and explanatory statements in the verbal data. Interacting with Virtue helped all students improve their domain-specific and domain-general psychological knowledge.

Visual Search Facilitation in Repeated Displays Depends on Visuospatial Working Memory

2012 ◽  
Vol 59 (1) ◽  
pp. 47-54 ◽  
Author(s):  
Angela A. Manginelli ◽  
Franziska Geringswald ◽  
Stefan Pollmann
Keyword(s):  
Working Memory ◽  
Visual Search ◽  
Control Experiment ◽  
Memory Load ◽  
Contextual Cueing ◽  
Long Term Memory ◽  
Visuospatial Working Memory ◽  
Working Memory Load ◽  
Memory Resources

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.

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