Authors
Jessica Heeman, Jan Theeuwes, Stefan Van der Stigchel
Publication date
2014/7/1
Journal
Vision research
Volume
100
Pages
29-37
Publisher
Pergamon
Description
When objects in a visual scene are positioned in close proximity, eye movements to these objects tend to land at an intermediate location between the objects (i.e. the global effect). This effect is most pronounced for short latency saccades and is therefore believed to be reflexive and dominantly controlled by bottom-up information. At longer latencies this effect can be modulated by top-down factors. The current study established the time course at which top-down information starts to have an influence on bottom-up averaging. In a standard global effect task two peripheral stimuli (a red and a green abrupt onset) were positioned within an angular distance of 20°. In the condition in which observers received no specific target instruction, the eyes landed in between the red and green element establishing the classic global effect. However, when observers were instructed to make a saccade to the red element during a …
Total citations
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Scholar articles
J Heeman, J Theeuwes, S Van der Stigchel - Vision research, 2014