低階因素對視覺搜尋的影響(I)
Date Issued
1998
Date
1998
Author(s)
DOI
862413H002010
Abstract
The present research replicates and
generalizes Geisler and Chou’s (1995) ideal
observer model to investigate the influence
of low-level factors in a variety of visual
search tasks. The results showed the follows:
(1) their approach is generalizable to many
conditions and yet is limited in predicting the
order involved conditions where color
homogeneity among background stimuli was
manipulated. Heterogeneous colors cannot
be used to enhance discrimination
performance but reduce effective display setsize
in visual search. Consequently, the
rank order of discrimination performance
cannot be mapped unto the rank order of
search performance – violating the prediction
of the model. (2) at the same similarity level,
perceptual grouping among background
stimuli or emergent features combined from
the target and nearby stimuli enhances
performance at both low and high levels. (3)
signal-noise ratio may be more important in
determining performance than whether
search is in the category of feature or
conjunctive search.
Subjects
visual search
discrimination
perceptual grouping
Publisher
臺北市：國立臺灣大學心理學系暨研究所
Type
report
File(s)![Thumbnail Image]()
Loading...
Name
862413H002010.pdf
Size
33.83 KB
Format
Adobe PDF
Checksum
(MD5):ca67b1ff6e5122462a804bc1a4b363db