Then there is the problem that one action can arise out of many different brain states and the same event can trigger many different brain reactions. Furthermore, there appears to be no dispersed pattern of activation that we can look at and say, 'That person is experiencing hatred.' In his book Brain Imaging, Yale biophysicist Robert Shulman notes that we have this useful concept, 'working memory,' but the activity described by this concept is widely distributed across at least 30 regions of the brain.
Then there is the problem that one activity is usually distributed over many different places in the brain.