Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Is it impossible to inhibit isoluminant items, or does it simply take longer?
T2 - evidence from preview search
AU - Braithwaite, Jason J
AU - Hulleman, Johan
AU - Watson, D. G.
AU - Humphreys, Glyn
PY - 2006/2
Y1 - 2006/2
N2 - Visual search can be facilitated when participants receive a preview of half the distractors (the preview benefit in search; Watson & Humphreys, 1997). Donk and Theeuwes (2001) have argued that preview-based benefits are abolished if the display items are isoluminant to a background. This is consistent with the preview benefit being due to onset capture by the new stimuli. In contrast, the present experiments challenge this suggestion and show that preview benefits can occur under isoluminant conditions, providing that they are given enough time to occur. In Experiment 1, we showed that a preview benefit can occur even with isoluminant stimuli, provided that the old items are previewed for a sufficient time. In Experiment 2, we tested and rejected the idea that this advantage is due to low-level sensory fatigue for the preview stimuli. These findings indicate that the preview effect is not caused solely by onset capture. nt]mis|This rese was supported by a British Academy postdoctoral fellowship awarded to the first author and an MRC grant to the fourth author.
AB - Visual search can be facilitated when participants receive a preview of half the distractors (the preview benefit in search; Watson & Humphreys, 1997). Donk and Theeuwes (2001) have argued that preview-based benefits are abolished if the display items are isoluminant to a background. This is consistent with the preview benefit being due to onset capture by the new stimuli. In contrast, the present experiments challenge this suggestion and show that preview benefits can occur under isoluminant conditions, providing that they are given enough time to occur. In Experiment 1, we showed that a preview benefit can occur even with isoluminant stimuli, provided that the old items are previewed for a sufficient time. In Experiment 2, we tested and rejected the idea that this advantage is due to low-level sensory fatigue for the preview stimuli. These findings indicate that the preview effect is not caused solely by onset capture. nt]mis|This rese was supported by a British Academy postdoctoral fellowship awarded to the first author and an MRC grant to the fourth author.
U2 - 10.3758/BF03193676
DO - 10.3758/BF03193676
M3 - Journal article
VL - 68
SP - 290
EP - 300
JO - Perception and Psychophysics
JF - Perception and Psychophysics
SN - 0031-5117
IS - 2
ER -