He stood as candidate for the Australian Cyclists Party for the 2015 state elections in New South Wales.

He was the first to derive reliable stereotaxic coordinates for the brain of rats, mice, birds and primates — a factor fueling the explosion in neuroscience research since the 1980s.

Further, Paxinos constructed the most frequently cited atlases of the brain and spinal cord of rats, mice, monkeys, birds and humans.

In the field of neuroscience, he is the author of the most cited publication internationally (The Rat Brain in Stereotaxic Coordinates (Paxinos and Watson, 1986.).

[1][2] For three decades, this was the third most cited book in science after Molecular Cloning and the Diagnostic and Statistical Manual of Mental Disorders (73,174 citations over its 7 editions).

Paxinos holds two National Health and Medical Research Council (NHMRC) project grants.

[11] The Nina Kondelos Prize[33] has been awarded annually since 2007 to a female neuroscientist for making significant contributions to neuroscience research.