This is an excellent book but it lacks a detailed presentation and formulation of images of memory. Positron emission tomography (PET) findings sometimes raise more enigmatic questions than they answer, with differences between studies and differences with established lesion evidence. Perhaps the book could have been more critical in its analysis of these enigmas, covering more of the basic issues and assumptions underlying PET research.

Some of the assumptions underlying the arguments in Aggleton & Brown's target article are reviewed; discrepancies/predictions are pointed out in relation to human lesion studies. A&B's proposal is interesting, but it may require harder, confirmatory evidence before it can be considered to be all-encompassing.