Visual change and visual marking

DG Watson, Glyn Humphreys

Research output: Contribution to journalArticle


Five experiments investigated the types of changes that disrupt the preview effect-die benefit gained in difficult search tasks from presenting some distractors earlier in time. A shape change with or without an overall luminance change at the location of an old item was found to disrupt the preview effect, whereas an equivalent luminance change alone or an isoluminant color change was not disruptive. Results suggest that (a) relatively low-level visual changes may not be sufficient to abolish the benefit, (b) the benefit most likely occurs through inhibition applied to locations within a location master map, and (c) inhibition need not be applied to surface features of objects.
Original languageEnglish
Pages (from-to)379-395.
Number of pages17
JournalJournal of Experimental Psychology: Human Perception and Performance
Publication statusPublished - 1 Jan 2002


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