# Question about WaitBlanking function **URL:** \ **Category:** Uncategorized\ **Created:** [November 22, 2005, 2:07pm UTC](https://psychtoolbox.discourse.group/t/question-about-waitblanking-function/995 "2005-11-22T14:07:18Z")\ **Posts on this page:** 2\ **Page:** 1
**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 22, 2005, 2:07pm UTC](https://psychtoolbox.discourse.group/t/question-about-waitblanking-function/995/1 "2005-11-22T14:07:18Z")
 Hello Dear Psychtoolbox Reseurchers, I have one question I hope so that you will answer. I am trying to make flickering screen on the monitor. Flicker must be at the specific frequency, with I can change. Flicker effect I am making when I am using for cycle and Mathlab function pause(sek). When I simulate the code screen is flickering not with specific frequency but with another. Because interval between the image is pause(sek)+WaitBlanking. My question is. How to avoid that kind of situation? Maybe  you  have some examles with flickering screen at the specific frequency? Thank you, and I am waiting the letter from you. Respectfully Vidas Raudonis   * * * [Yahoo! FareChase - Search multiple travel sites in one click.](http://us.lrd.yahoo.com/_ylc=X3oDMTFqODRtdXQ4BF9TAzMyOTc1MDIEX3MDOTY2ODgxNjkEcG9zAzEEc2VjA21haWwtZm9vdGVyBHNsawNmYw--/SIG=110oav78o/**http%3a//farechase.yahoo.com/) ---
**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 23, 2005, 2:41am UTC](https://psychtoolbox.discourse.group/t/question-about-waitblanking-function/995/2 "2005-11-23T02:41:58Z")
I'm not sure whether I'd understood your question. If you want to make flicker with accurate frequency,you'd better control the number of frames in "WaitBlanking" instead of "pause".   > On 11/22/05, **Vidas Raudonis** \<[vidasraudonis@...](mailto:vidasraudonis@...)\> wrote: > > >  Hello Dear Psychtoolbox Reseurchers, > > > > I have one question I hope so that you will answer. > > I am trying to make flickering screen on the monitor. > > Flicker must be at the specific frequency, with I can change. > > Flicker effect I am making when I am using for cycle and Mathlab > > function pause(sek). > > When I simulate the code screen is flickering not with specific > > frequency but with another. > > Because interval between the image is pause(sek)+WaitBlanking. > > My question is. > > How to avoid that kind of situation? > > Maybe  you  have some examles with flickering screen at the specific > > frequency? > > > > Thank you, and I am waiting the letter from you. > > > > Respectfully > > Vidas Raudonis > >   > > > > * * * > > [Yahoo! FareChase - Search multiple travel sites in one click.](http://us.lrd.yahoo.com/_ylc=X3oDMTFqODRtdXQ4BF9TAzMyOTc1MDIEX3MDOTY2ODgxNjkEcG9zAzEEc2VjA21haWwtZm9vdGVyBHNsawNmYw--/SIG=110oav78o/**http%3a//farechase.yahoo.com/) > > > > Post your message to: [psychtoolbox@yahoogroups.com](mailto:psychtoolbox@yahoogroups.com) > > Please indicate OS9, OSX, or WIN version, and include your full name. > > Denis Pelli, David Brainard, and Allen Ingling. > > [http://psychtoolbox.org](http://psychtoolbox.org/) > > > > > > > > > > > > SPONSORED LINKS > > > > | [Truck toolboxes](http://groups.yahoo.com/gads?t=ms&k=Truck+toolboxes&w1=Truck+toolboxes&w2=Pickup+truck+toolboxes&w3=Toolbox&w4=Uws+toolboxes&w5=Craftsman+toolboxes&c=5&s=106&.sig=38wskw1QvO5vNFbDpylDhg) | [Pickup truck toolboxes](http://groups.yahoo.com/gads?t=ms&k=Pickup+truck+toolboxes&w1=Truck+toolboxes&w2=Pickup+truck+toolboxes&w3=Toolbox&w4=Uws+toolboxes&w5=Craftsman+toolboxes&c=5&s=106&.sig=Uo8QGlL28vXOl4wY8DzHhQ) | [Toolbox](http://groups.yahoo.com/gads?t=ms&k=Toolbox&w1=Truck+toolboxes&w2=Pickup+truck+toolboxes&w3=Toolbox&w4=Uws+toolboxes&w5=Craftsman+toolboxes&c=5&s=106&.sig=xsknyX96ZD5gxYuYhZhTEA) | > > | [Uws toolboxes](http://groups.yahoo.com/gads?t=ms&k=Uws+toolboxes&w1=Truck+toolboxes&w2=Pickup+truck+toolboxes&w3=Toolbox&w4=Uws+toolboxes&w5=Craftsman+toolboxes&c=5&s=106&.sig=vu6i0bw4YBZwU-UlokJcRQ) | [Craftsman toolboxes](http://groups.yahoo.com/gads?t=ms&k=Craftsman+toolboxes&w1=Truck+toolboxes&w2=Pickup+truck+toolboxes&w3=Toolbox&w4=Uws+toolboxes&w5=Craftsman+toolboxes&c=5&s=106&.sig=oBKiGXPG6n_8uHLrT3ofmQ) | > > > > > > > > * * * > > YAHOO! GROUPS LINKS > > > > > > -  Visit your group "[psychtoolbox](http://groups.yahoo.com/group/psychtoolbox)" on the web. > >   > > -  To unsubscribe from this group, send an email to: > >  [psychtoolbox-unsubscribe@yahoogroups.com](mailto:psychtoolbox-unsubscribe@yahoogroups.com?subject=Unsubscribe) > >   > > -  Your use of Yahoo! Groups is subject to the [Yahoo! Terms of Service](http://docs.yahoo.com/info/terms/). > > > > > > > > * * *