Table 3.
Relationships between the structural and functional markers of maturation.
| a | |||||
|---|---|---|---|---|---|
| Left AR | Right AR | Left AF | Right AF | ACC | |
| average P2 contra |
r = 0.15, p = 0.991 |
r < 0.01, p = 0.991 |
r = 0.14, p = 0.991 |
r <0.01, p = 0.991 |
r = -0.05, p = 0.991 |
| Left P2 ipsi |
r = -0.08, p = 0.763 |
r = -0.25, p = 0.598 |
r = -0.16, p = 0.702 |
r = -0.36, p = 0.475 |
r = -0.52, p = 0.243 |
| Right P2 ipsi |
r = 0.26, p = 0.817 |
r = 0.06, p = 0.817 |
r = 0.10, p = 0.817 |
r = 0.36, p = 0.817 |
r = 0.14, p = 0.817 |
| b | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Left IFG | Right IFG | Left MTG | Right MTG | Left STG | Right STG | Left AG | Right AG | average PT | average HG | |
| average P2 contra |
r = 0.67, p = 0.043 |
r = 0.70, p = 0.043 |
r = 0.44, p = 0.478 |
r = 0.47, p = 0.219 |
r = 0.34, p = 0.393 |
r = 0.34, p = 0.393 |
r = 0.48, p = 0.219 |
r = 0.29, p = 0.397 |
r = 0.21, p = 0.478 |
r = 0.31, p = 0.354 |
| Left P2 ipsi |
r = 0.15, p = 0.782 |
r = 0.14, p = 0.782 |
r = 0.37, p = 0.540 |
r = 0.06, p = 0.876 |
r = 0.22, p = 0.782 |
r = 0.18, p = 0.782 |
r = 0.04, p = 0.876 |
r = 0.46, p = 0.480 |
r = 0.546, p = 0.430 |
r = 0.35, p = 0.540 |
| Right P2 ipsi |
r = 0.11, p = 0.994 |
r = -0.02, p = 0.994 |
r = -0.26, p = 0.994 |
r < 0.01, p = 0.994 |
r < 0.01, p = 0.994 |
r = -0.51, p = 0.530 |
r = 0.45, p = 0.530 |
r = -0.13, p = 0.994 |
r = -0.11, p = 0.994 |
r = -0.33, p = 0.825 |
a: Correlation analyses between P2 speeds (contralateral responses averaged over both hemispheres; left and right ipsilateral responses) and the microstructure of auditory tracts (transverse diffusivity for left and right AR, AF and ACC), based on partial correlations taking into account the age effects (n = 16). P-values were corrected for the number of comparisons made for each P2 response (c = 5) using FDR approach. The only observed effect was a trend for the speed of left ipsilateral response that correlated with the auditory callosal fibers (uncorrected p = 0.049, corrected p = 0.243 highlighted italic bold, Fig. 5a) but it did not survive the correction for multiple comparisons.
b: Correlation analyses between P2 latencies (contralateral responses averaged over both hemispheres, as well as left and right ipsilateral responses) and the microstructure of perisylvian regions (longitudinal diffusivity for left and right regions when an asymmetry was observed, or averaged over both hemispheres), based on partial correlations taking into account the age effects (n = 15). P-values were corrected for the number of comparisons made for each P2 latency (c = 10) using FDR approach. Significant (p < 0.05) comparisons after FDR correction are marked in bold, while those significant comparisons before correction that did not reach the significance threshold of p < 0.05 after correction, are highlighted in italic bold. The only significant relationships after correction were between the latency of averaged contralateral response and the left and right inferior frontal gyri (Fig. 5b,c). See Sup Table 3 for similar analyses with P2 speeds.