PreRelease??

[Peter Quain]

Hi

I was looking at prerelease, and came across what 
seems to me to be an anomaly. Two snippets, 
below. One from Users Guide, the other from help. 
Key bits underlined. Prerelease is mentioned more 
in Guide chapter 3 example paradigms, used with 
event mode. Yet e-basic notes that it is ignored 
during event mode. So does anyone know what is 
the real story with prerelease? does it operate in Event mode, or not?

Secondly, Timing paradigm 2 details a masking 
paradigm with Probe duration 90ms, and waiting 
for a response for 2000 ms. The Probe has 100 ms 
prerelease  so the following mask can be 
prepared. Have a look at the bold line in e=prime 
help snippet below. Again, does anyone know the 
real story with this? Is e-prime example paradigm 
fantasy, or has the implementation of prerelease 
been modified early, and the woeful help has 
escaped notice and updating for 7(?) years?

 From p110 of e-prime users guide (from version 1):
----------------------------------------------------
Timing Paradigm 2: Critical sequence of events
... An example would be to present a sequence of
a fixation, probe, and mask, where the duration 
of each of the events is precise, the time of the
response is precise, and the response may occur 
during or after the stimulus event (e.g.,
response to the probe occurred while the mask 
display was presented). Subject input may alter
the timing (e.g., remove the stimulus when the 
subject responds). After the critical sequence of
events, the timing of the remaining events (e.g., 
feedback) and the time to choose the next
condition are not critical (e.g., delays of less 
than 100ms are not critical). This paradigm model
uses Event timing mode with PreRelease enabled on 
all objects except the last one of the
sequence. Durations for displays are set based on 
the refresh rate of the video mode.
-----------------------------------------------------

 From e-basic help (both versions 1, and 2)
----------------------------------------------
Syntax

RteRunnableInputObject.PreRelease

Description

Amount of time released during the processing of 
the current object to allow for setup of the next object.

Comments

¨       This property is used only with 
Cumulative Timing Mode.  It is ignored in Event timing.

¨       PreRelease is ignored by objects which 
have their Run method terminated by a response.

¨       If the object has a post-action (e.g., 
ClearAfter), the Pre-Release time will have 
little effect (e.g., the object must wait until 
its true offset time before clearing).
----------------------------------------- 
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