Problem detecting key releases

[Andrews, A S]

Hi

I have a paradigm where I use an extended keyboard input to allow me to
cycle around a couple of alternating images (a change blindness experiment)
until a key is pressed.

This works very well, but now we would like to change it thus:

Text object: "Press and hold response button to start, relase when you spot
the change", infinite display duratiom, terminates on keypress

Text object: "+" display duration 1000ms, input mask infinite duration, Jump
to EndLabel

Flag: StartofLoop

[objects here to loop around 2 images etc]

Flag: Endlabel

[rest of paradigm]


I have the keyboard device set to record Presses and Releases, but I cannot
get the release to be noted/recorded. Is this because the initial press is
on one object, and the release is on another? How can I get the program to
work as desired,i.e. pressing a key starts the looping, releasing it stops
the looping.

I actually want to do this with a serial response box, but the problem
appears to be common to both.

Thanks,

Tony Andrews
Principal Computer Officer
School of Psychology
University of Leicester.

-----Original Message-----
From: eprime at mail.talkbank.org [mailto:eprime at mail.talkbank.org] On Behalf
Of Paul Gr
Sent: 30 June 2006 16:56
To: Anna_Abramson at brown.edu; eprime at mail.talkbank.org
Subject: RE: Clicks on a visual analog scale

hello,

Perhaps the following eprime script is useful for all of you who would like 
to implement interactive mouse click region in eprime: 
http://www.psy.vu.nl/download/paul/memory.zip
This script implements the well known 'memory' game where one has to select 
pairs of matching cards from an array of non-facing cards.
Note that the inline scripting of this test is not very trivial though!
A small readme is provided along with the script.

best,

Paul Groot
Vrije Universiteit van Asmterdam


>From: "Abramson, Anna" <Anna_Abramson at brown.edu>
>To: <eprime at mail.talkbank.org>
>Subject: Clicks on a visual analog scale
>Date: Thu, 29 Jun 2006 18:28:29 -0400
>
>
>Hello,
>A couple of quick questions that maybe someone can offer some help on..
>1. Does anyone know how to modify the visual analog mouse click setup so 
>that a subject can click and unclick until he settles on one final choice??
>
>2. Is there a way to have a selected box on a visual analog scale change so

>the subject can see his/her choice---ie, box is highlighted, Xed, changes 
>color? I know how to do this on the Grid, but I cant seem to apply it to 
>the visual mouse click.
>
>3. Is it possible to have multiple rows where the subject must choose one 
>box per row--so the program allows multiple clicks, one per row?
>
>THANK YOU.
>
>