home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Illusion - Is Seeing Really Believing?
/
Illusion - Is Seeing Really Believing (1998)(Marshall Media)[Mac-PC].iso
/
pc
/
illusion
/
rock_txt.cxt
/
00322_Text_re42t.txt
< prev
next >
Wrap
Text File
|
1997-02-04
|
924b
|
33 lines
To test this theory,
investigators have used
variations of the Ponzo illusion
that eliminate a sense of
perspective. In one test, they
separated the two test lines,
each within its own inducing
background, since continuity
of the inducing lines is not
essential to the explanation.
All that remains are the
appropriate distances between
the ends of the test lines and
the contours of the inducing
pattern. By and large, these
experimental variations do
yield an illusion that is
analogous to the Ponzo
illusion. But the effect is
generally smaller. One possible
conclusion is that contrast and
assimilation are indeed
determining factors in the
Ponzo illusion but not the only
ones. Thus, it is possible that
this illusion is the joint result
of both contrast and
assimilation and depth
processing, a possibility to
which I return at the end of the
chapter.