Attention and luminance detection: Effects of cues, masks, and pedestals

Authors
Citation
Pl. Smith, Attention and luminance detection: Effects of cues, masks, and pedestals, J EXP PSY P, 26(4), 2000, pp. 1401-1420
Citations number
64
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Psycology
Journal title
JOURNAL OF EXPERIMENTAL PSYCHOLOGY-HUMAN PERCEPTION AND PERFORMANCE
ISSN journal
0096-1523 → ACNP
Volume
26
Issue
4
Year of publication
2000
Pages
1401 - 1420
Database
ISI
SICI code
0096-1523(200008)26:4<1401:AALDEO>2.0.ZU;2-M
Abstract
Three experiments investigated the effects of attention on the detection of luminance targets in a spatial-cuing paradigm. Gabor patch stimuli of 30, 60, or 90 ms duration, equated for detectability, were presented (a) agains t a uniform field with a checkerboard backward mask, (b) atop a 15% luminan ce pedestal with a backward mask, or (c) atop a luminance pedestal with no backward mask. Signal detection analysis showed that detection sensitivity was significantly enhanced at attended locations for all observers when bac kward masks were used, both when targets were presented against a uniform f ield and when a pedestal was used. However, when no masks were used there w as no cuing advantage of any kind. The results show that the cuing effect i n simple detection depends on the use of backward masks, a finding that res olves the inconsistencies previously associated with studies of this type.