A quantitative reduction in speech tracking as observed in the fMRI data could be a consequence of the failure of slow speech modulations to engage theta - range activity in auditory cortex during speech stimulation (Ghitza, 2012; Peelle et al., 2013). (frontiersin.org)
In addition to the asymmetry of auditory cortex activation for the processing of the original music, we showed that BOLD signals were modulated by alterations of the musical stimuli. (pnas.org)
The group interaction was not significant in the right temporal cortex [F (1,22) = 0.872; p = 0.361] where controls showed no theta - gamma dependency (Figure 2C, right), in line with the specificity of left auditory cortex for speech processing (Gross et al., 2013). (frontiersin.org)