Thus, one could argue that the recruitment of more closely-matched healthy controls may have accounted for the difference in SID findings between the current and prior studies. In any case, more research is warranted regarding specific aspects of olfactory processing and its electrophysiologic correlates in schizophrenia and how it relates to an early prodromal phase of the disease. The available preliminary data from three converters is extremely encouraging as this suggests that behavioral and neurophysiological deficits in olfactory processing may have predictive value for transition to psychosis.
