In 1990 I set up a neuropsychology research unit, initially to study disorders of attention following stroke (unilateral neglect or hemi-inattention) and disorders of movement in the neurodegenerative disorders Parkinson's and Huntington's diseases.

To that end I developed a range of novel devices and paradigms, including a programmable serial choice-reaction-time device (now adopted for a major international multi-site study into the preclinical development of Huntington's disease), and a vibrotactile choice reaction time device to extend the classic Posner paradigm into the tactual modality. I have also developed a wide range of cognitive tasks, perhaps the most important being the staged "arrows" task which assesses levels of inhbitory (frontostriatal) dyscontrol and is now being widely used in brain imaging.

Experimental neuropsychology with special reference to the frontostriatal system and disorders of control, attention and movemement, i.e. the neurodegenerative disorders Parkinson's, Huntington's and Alzheimer's diseases, and the neurodevelopmental disorders Tourette's syndrome, obsessive-compulsive and attention-deficit-hyperactivity disorders, schizophrenia, autism and depression.

Friedreich's attaxia, Williams syndrome. Impulsivity and violent aggression, addiction and problem gambling. The evolution of language, praxis and tool use.

Synaesthesia, spatial representations, embodiment, mirror-neuron and phantom limb phenomena.

Regular ABC Science Unit broadcasts: Ockham's Razor (27 talks), Science Show, Health Report, Café Scientifique;

Frequent contributions to Australasian Science and Tirra Lirra (literary journal);

Reviewing Grant and Journal Submissions