Selectively Showing Header Area
 

I read many threads re. header area placement on selective pages and id's. I have "%bar1 %logo %bar1 %page-center" configured for the header area, but would like to not display these when a 'single post'-page is called. So a multi-post page should still show the header, just when you navigate to the single post, the header configuration is omitted.

Is that possible ?
Thanks for any suggestion,

Peter