Observation #1. In the editorial Cappa and Pulvermuller write,
Whereas the dominant view in classical aphasiology had been that superior temporal cortex (“Wernicke’s area”) provides the unique engine for speech perception and comprehension (Benson, 1979), investigations with functional neuroimaging in normal subjects have shown that even during the most automatic speech perception processes inferior fronto-central areas are being sparked (Zatorre et al., 1992)I take it that they are referring to Zatorre's task in which subjects are listening to pairs of CVC syllables, some of which are words, some of which are not, and alternating a button press between two keys. Contrasted with noise, activation foci were reported for automatic-speech-perception-of-random-CVC-syllables-while-alternating-button-pressing in the superior temporal gyrus bilaterally, the left middle temporal gyrus, and the left IFG. Clearly the stronger activations in the temporal lobe (nearly double the z-scores) are doing little in the way of speech perception and it's the IFG activation that refutes the classical view.
I wonder why no mention was made of a rather nifty study published around the same time by Mazoyer et al. in which a larger sample of subjects listened to sentences of various sorts and which did not result in consistent activation in the IFG. This is a finding that has persisted into more recent research: listening to normal sentences does not result in robust IFG activation. Sometimes you see it, sometimes you don't (see Rogalsky & Hickok for a review). Superior temporal cortex, that area that people were writing about on their IBM selectrics (Google it, youngster) is not so fickle. Present speech and it lights up like a sparkler on Independence Day.
Hopes of a balanced (and therefore useful) volume already sinking. And I haven't even made it past the first paragraph of the editorial.
Mazoyer, B. M., Tzourio, N., Frak, V., Syrota, A., Murayama, N., Levrier, O., Salamon, G., Dehaene, S., Cohen, L., & Mehler, J. (1993). The cortical representation of speech. Journal of Cognitive Neuroscience, 5, 467-479.
Rogalsky, C., & Hickok, G. (2011). The role of Broca's area in sentence comprehension. Journal of Cognitive Neuroscience, 23, 1664-1680.