A quick check on the use of WaitBlanking

1
I have a program that is designed to diplay a three frame animation at
varying speeds. The following is the code for the display of each
animation:

%%%%%
for frame=1:3
screen('CopyWindow', part(framematrix(frame)), MainWindow,
letterRect, letterpos);

screen (MainWindow, 'WaitBlanking', (delaytime));
end
%%%%


I'm using Delaytime to vary the length of each frame. The monitor I'm
using is set at 100Hz - i.e. 1 refresh every 10ms. Am I correct in
thinking that Delaytime==1 (and NOT delaytime==0) will show the first
two frames for 10ms EACH?

Sorry if this seems an obvious and simple point - I just want to
check! Thanks for any help!


Jim Parkinson, University of Sussex, UK