Brain Blogger sponsorsed two exceptional blog carnivals — special blog communities that link articles from a variety of publishers on a particular topic. The Blog Carnival network officially defines a “blog carnival” as:

… a particular kind of blog community. There are many kinds of blogs, and they contain articles on many kinds of topics. Blog Carnivals typically collect together links pointing to blog articles on a particular topic. A Blog Carnival is like a magazine. It has a title, a topic, editors, contributors, and an audience. Editions of the carnival typically come out on a regular basis (e.g. every monday, or on the first of the month). Each edition is a special blog article that consists of links to all the contributions that have been submitted, often with the editors opinions or remarks.

Brain Blogging Carnival

From January 2007 to Februrary 2010, the Brain Blogging Carnival covered blogs related to the mind and brain that go beyond the basic sciences and into a more human, multidimensional perspective.

Drugs & Pharmacology Blog Carnival

From November 2007 to January 2010, the Drugs & Pharmacology Blog Carnival covered all articles related to drugs, whether it medicinal or recreational. This included legal, political, economical, religious, pharmacological, personal, professional, or any other aspect related to drugs.