As per JIRA documentation http://www.atlassian.com/software/jira/docs/latest
The following filter will show the issues opned by me (Current User).
repor
You could also follow the approach presented by Matt Doar:
Use a participants field from the JIRA Toolkit plugin and query that
http://confluence.atlassian.com/display/JIRA/Advanced+Searching?focusedCommentId=229838922#comment-229838922
It's not a a complete answer but maybe a step in the right direction... Francis