Load induced blindness.
- 1 October 2008
- journal article
- research article
- Published by American Psychological Association (APA) in Journal of Experimental Psychology: Human Perception and Performance
- Vol. 34 (5), 1078-1091
- https://doi.org/10.1037/0096-1523.34.5.1078
Abstract
Although the perceptual load theory of attention has stimulated a great deal of research, evidence for the role of perceptual load in determining perception has typically relied on indirect measures that infer perception from distractor effects on reaction times or neural activity (see N. Lavie, 2005, for a review). Here we varied the level of perceptual load in a letter-search task and assessed its effect on the conscious perception of a search-irrelevant shape stimulus appearing in the periphery, using a direct measure of awareness (present/absent reports). Detection sensitivity (d') was consistently reduced with high, compared to low, perceptual load but was unaffected by the level of working memory load. Because alternative accounts in terms of expectation, memory, response bias, and goal-neglect due to the more strenuous high load task were ruled out, these experiments clearly demonstrate that high perceptual load determines conscious perception, impairing the ability to merely detect the presence of a stimulus--a phenomenon of load induced blindness.Keywords
Funding Information
- Wellcome Trust (WT080568MA)
This publication has 51 references indexed in Scilit:
- Attentional Load Modulates Responses of Human Primary Visual Cortex to Invisible StimuliCurrent Biology, 2007
- Distracted and confused?: Selective attention under loadTrends in Cognitive Sciences, 2005
- Look Here but Ignore What You See: Effects of Distractors at Fixation.Journal of Experimental Psychology: Human Perception and Performance, 2005
- The role of perceptual load in negative priming.Journal of Experimental Psychology: Human Perception and Performance, 2000
- Perceptual load as a necessary condition for selective attention.Journal of Experimental Psychology: Human Perception and Performance, 1995
- Texture-Based Tasks are Little Affected by Second Tasks Requiring Peripheral or Central Attentive FixationPerception, 1991
- Vision outside the focus of attentionPerception & Psychophysics, 1990
- On the locus of visual selection: Evidence from focused attention tasks.Journal of Experimental Psychology: Human Perception and Performance, 1990
- Uncertainty about spatial frequency, spatial position, or contrast of visual patternsPerception & Psychophysics, 1983
- Decay of Visual Information from a Single LetterScience, 1967