1
Cognitive Neuroscience Sector, SISSA, Trieste, Italy
2
Institute of Cognitive Neuroscience, University College, London, UK
3
Rotman Research Institute, Baycrest, Toronto, ON, Canada
4
Departments of Psychology and Medicine, University of Toronto, Toronto, ON, Canada
5
Behavioral Neurology Unit, KS 253, Beth Israel Deaconess Medical Center, Boston, MA, USA
6
Harvard Medical School, Boston, MA, USA
This paper considers evidence provided by large neuropsychological group studies and meta-analyses of functional imaging experiments on the location in frontal cortex of the subprocesses involved in the carrying out of task-switching paradigms. The function of the individual subprocesses is also considered in the light of analyses of the performance of normal subjects.