To: CVNetList@lawton.ewind.com
From: Mike Levine <mikel@uic.edu>
Subject: CD for Fundamentals of Sensation & Perception
Cc: grandidj@oup.co.uk, brownine@oup.co.uk
Since the printing of the Third Edition of Fundamentals of Sensation &
Perception, I have discovered some glitches in the SensPerc program on the
CD packaged with the book. The program runs despite these, but several of
the simulated responses (of ganglion cells and cortical cells) are
inappropriate for the stimuli selected. For some stimuli, the response
depends upon the order in which stimuli are presented.
I have corrected the bugs that I have found (no doubt, more will surface as
people exercise the program), and compiled a new application (execute)
file, which is available for download at the Oxford University Press site:
http://www.oup.co.uk/best.textbooks/psychology/levine/ [Click on "errata"
at the bottom of the list].
The errata link is to
http://www.oup.co.uk/best.textbooks/psychology/levine/errata/ which has a
link for downloading [in Netscape, clicking it brings up a box labelled
"unknown file type"; just click the "save file" button at the bottom. This
brings up a "save as" box, in which you can specify where to save the file,
and its name, sensperc.exe].
Save sensperc.exe into the directory where you installed the CD,
overwriting the existing SensPerc.exe. (You must have first installed the
CD for this patch to run).
The latest version is 1.01.003. If other glitches are found and repaired, a
newer version will be posted.
One other point that some people have enquired about: The way different
computers handle timer functions is somewhat different. In order for the
action potential simulations to time out correctly, the timer function must
be set appropriately for the individual system. This is done by running a
timer test at the startup of the program. The optimized value is then used
in those modules that depend on synchronized timing of image and sound. The
test takes a few seconds; until it is complete, the modules that need the
determined value are disabled -- "greyed out" so they cannot be selected.
Wait a few seconds, and they will become available.
MikeL
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