Should the temporal cortex be chopped in two?

The single-cell recording technique has long been used in attempts to dissociate two regions of the temporal cortex involved in face recognition and facial expression processing. As a classical example, the results obtained by Hasselmo et al. (1989) are frequently quoted in support of this functional dissociation. However a critical analysis of these data and a review of behavioral, neurophysiological, and neuropsychological findings on this topic show that we cannot purely and simply accept the conclusion that the superior temporal sulcus is associated with expression processing, and the inferior temporal cortex, with face recognition.