How can I find open access journals for cognitive science research? What open access journals that publish research in cognitive science/psychology exist?

Apart from PLOS ONE, are there any other open access journals that publish research in cognitive science/psychology?

Where should I start looking for them?
The Directory of Open Access Journals is a great place to start when searching for Open Access Journals in any field.

You can browse through journals for the specific subject areas like Psychology or Neurology, or you can search for journals or articles containing certain keywords.

The DOAJ lists articles in multiple languages as well, not just English journals.