Article Figures & Data
Figures
- Figure 1.
Duration of exposure to broadcast speech (gray symbols) and postterm maturational age (black symbols) for each participant in function of the groups. In full-term infants, age from birth (corresponding to the duration of exposure) and postterm maturational age overlap within ±15 d of variability. In contrast, in preterm infants, the age from birth and thus the exposure to broadcast speech is nearly 3 months greater than the age after term.
- Figure 2.
Mismatch responses to a change of syllable. B, Scalp topography of the values of Student's t test obtained by comparing the mean of deviant and standard trials of all participants, regardless of the group and condition (p < 0.05, two-tailed t test after false discovery rate correction, q < 0.05). A, C, Grand averages of the deviant and standard trials (in cyan and magenta lines, respectively) computed across all participants over the anterior and posterior clusters of electrodes. The electrodes of the anterior and posterior clusters correspond to the red circles in the red and blue areas of the scalp map, respectively. The x-axes indicate the onset of each of the four syllables presented in each trial. Dashed rectangles indicate the time window when deviant and standard trials were significantly different.
- Figure 3.
Voltage value of the mismatch response at the anterior positive cluster for native (dark gray line) and nonnative (light gray line) phonetic contrasts for each group. Vertical lines indicate the standard error. Asterisks indicate significant differences between native and nonnative contrasts within a group.
