Fig. 8.

Person product moment correlations between 6-month amount of spectral power in the left auditory cortex source during frequency (DEVF) and duration (DEVD) changes and 20-month expressive language (percentile score in the Language Development Survey). The above panel shows the emerging significant clusters associated with expressive vocabulary, including (a) Temporal Spectral Evolution (TSE) in LAC during frequency changes (DEVF-STD condition; 300–500 ms; 2–5 Hz) and (b) Inter-trial Phase Locking (ITPL) in LAC during duration change (DEVD-STD condition; 300–500 ms; 2–5 Hz).The below panel shows the relative scatterplots for FH− (black dots) and FH+ (white dots) infants. Bold regression lines represent the combined group, whereas thin continuous lines represent the FH− group and thin dashed lines represent the FH+ group.