# Chromatic spatial contrast sensitivity

**URL:** <https://psychtoolbox.discourse.group/t/chromatic-spatial-contrast-sensitivity/1916>\
**Category:** Uncategorized\
**Created:** [November 16, 2007, 3:36am UTC](https://psychtoolbox.discourse.group/t/chromatic-spatial-contrast-sensitivity/1916 "2007-11-16T03:36:52Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**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 16, 2007, 3:36am UTC](https://psychtoolbox.discourse.group/t/chromatic-spatial-contrast-sensitivity/1916/1 "2007-11-16T03:36:52Z")

</div>

Hi Everyone,  
I am kind of new to this game. So if any of my statements seem  
slightly ignorant I apologize. The programming stuff is fairly new to me.   
  
I am trying to put together a constrast sensitivity measure to assess  
parvo- (red-green) and koniocellular chromatic contrast properties  
(e.g. similiar to: Ventura, Quiros, Carelli, Sakinai, Gualtieri,  
Oliveira, et al., 2005; Hardy, Delahunt, Okajima, & Werner, 2005;  
Hardy, Delahunt, Okajima, & Werner, 2005).   
  
So, I am trying to create spatially modulated isoluminant chromatic  
gabors for this purpose and create CSFs based on these. I was curious  
if anyone has tried this using psychoolbox before. I will be running  
the experiment on a ViSage system from Cambridge, and also have access  
to their toolbox as well. Any advice or suggestions?   
  
Also, has anyone tried to develop a mangno- parvo- paradigm similiar  
to the steady- and pulsed- pedestal method described by Pokorny &  
Smith (1997). I may also use this method in my experiments, just  
curious if anything is out there.  
Thank you,  
James Brazeau