# Reaction time measure

**URL:** <https://psychtoolbox.discourse.group/t/reaction-time-measure/1733>\
**Category:** Uncategorized\
**Created:** [November 21, 2006, 11:16pm UTC](https://psychtoolbox.discourse.group/t/reaction-time-measure/1733 "2006-11-21T23:16:09Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Allen\_Ingling](https://avatars.discourse-cdn.com/v4/letter/a/a183cd/32.png) [@Allen\_Ingling](https://psychtoolbox.discourse.group/u/Allen_Ingling)\
**Post date:** [November 21, 2006, 11:16pm UTC](https://psychtoolbox.discourse.group/t/reaction-time-measure/1733/1 "2006-11-21T23:16:09Z")

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Dear Friends   
I am doing an binocular rivalry experiment in which i  
ask the observer to hold down a key when one image is  
dominant , when the obsever holds down the particular  
key a probe is superimposed on that image and the  
observer has to respond to the probe with a second  
key. I want to measure the response for the second key  
while the first key was still held down   
i have tried using Kbcheck but i get response of the  
first button press and not the second one if anyone  
has a code which does what i want and do not mind  
sharing it with me, i would really be greatfull to  
them or if anyone has any suggestion for me then it is  
most welcomed   
Thanks in advance  
Rishi   
  
  
  
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