# a little help

**URL:** <https://psychtoolbox.discourse.group/t/a-little-help/1376>\
**Category:** Uncategorized\
**Created:** [July 26, 2000, 1:19pm UTC](https://psychtoolbox.discourse.group/t/a-little-help/1376 "2000-07-26T13:19:23Z")\
**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:** [July 26, 2000, 1:19pm UTC](https://psychtoolbox.discourse.group/t/a-little-help/1376/1 "2000-07-26T13:19:23Z")

</div>

Is it possible to generate a moving vertical two-colored grating and to  
change spacial and time frequency, color and color-contrast and  
luminances?  
I´m new in psychophysics, new in Matlab and of course new in  
PsychToolbox.  
Has anyone a demo or m-file or just a little help?  
  
Thnx  
S.F.