The development of newer imaging techniques that allow direct
investigation of the function of the human brain under normal and
pathological conditions has affected the way in which we conceive of the
mind/brain relation. In this report the authors use examples from findings
obtained with positron emission tomography (PET) to illustrate the highly
interactive organization of the brain. Because operations in the brain
require the participation of various brain areas, a model that does not
require a one-to-one relationship between the physical and mental, but
rather allows an association between clusters of physical processes and one
or more mental phenomena, may reflect better the relation between physical
brain phenomena and mental activities.Abstract Teaser