home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Illusion - Is Seeing Really Believing?
/
Illusion - Is Seeing Really Believing (1998)(Marshall Media)[Mac-PC].iso
/
mac
/
ILLUSION
/
SROCK_TX.CXT
/
00123_Text_re05t.txt
< prev
next >
Wrap
Text File
|
1996-12-31
|
889b
|
33 lines
When the eyes converge,
the directions of gaze of the two
eyes form a particular angle
with respect to one another, a
kind of triangulation. If the
object is near, this angle will
be relatively large; if the object
is far, the angle will be more
acute. At infinity, the
directions of gaze would be
parallel and the angle would be
zero, as can be seen in the
illustration to the left.
Angle of convergence of the
eyes at infinite, far, and near
distances.
Thus, the convergence (or,
more generally, just vergence)
angle of the eyes could be a cue
to distance if the perceptual
system receives information
about the degree of
convergence of the eyes and
can interpret it appropriately.
This kind of information
concerns the absolute distance
of a single object from us. I will
refer to this aspect of
perception as distance.