Reply to ‘Time-resolved sex differences in language lateralization’

Abstract
In response to our meta-analysis on sex differences in language lateralization (Sommer et al., 2004), Ortigue and colleagues point out the limited time resolution of functional MRI (fMRI), PET and echo Doppler as a possible cause for failing to find a significant sex difference in the meta-analysis. The activation pattern of fMRI and PET studies, they argue, is composed of language components, but also of non-specific cerebral activity, especially when the control task consists of passive rest.