Fig 2. Phase coherence separates phrases and sentences at theta band. (IMAGE)
Caption
Statistical analysis on the phase coherence (ITPC) was conducted using a non-parametric cluster-based permutation test (1000 times) on a 1200-ms time window, which started at the audio onset and over the frequencies from 2 Hz to 8 Hz. The results indicated that the phase coherence was higher for the sentences than the phrases (p < 1e-4 ***, two-tailed). (a) The temporal evolution of the cluster that corresponds to the separation effect. The activity was drawn using the ITPC of the phrases minus the ITPC of the sentences. The topographies were plotted in steps of 50 ms. (b) ITPC averaged over all the sensors in the cluster. The upper panel and the lower panel show the ITPC of the phrases and the sentences, respectively. The underlying data can be found in https://doi.org/10.5281/zenodo.6595789.
Credit
Fan Bai, Antje S. Meyer and Andrea E. Martin
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