Neural Correlates of Processing Syntax in Music and ... - PubMan

Experiment II 113
amplitude in the earlier (0 to 100 ms, anterior ROIs, TLD: M =2.93μV,
SEM =0.34μV vs. SLI: M =2.96μV, SEM = 0.39 μV) and the later time window (100
to 200 ms, TLD: M =3.92μV, SEM =0.87μV vs. SLI: M =4.54μV, SEM =1.00μV).
An ANOVA revealed neither a significant main effect nor any interaction with subgroup.
Thus, ERP response that reflect music-syntactic processing could be evaluated because
differences that are found for these processes were most presumably not due to deficiencies
in earlier processing stages. ERPs elicited by irregular (supertonic) compared to
regular (tonic) chord sequence endings are shown in Figure 10-3, the scalp distributions
of the amplitude differences in Figure 10-4.
Figure 10-3 ERP responses to the irregular (black dotted lines) compared to the regular chords (black
solid lines) and the difference between these conditions (red and blue solid lines). In the upper
panel the ERP responses were shown for both subgroups: children with TLD (left), and
children with SLI (right). In the left bottom panel the difference waves for both groups can
be directly compared between children with TLD (red solid lines) and children with SLI
(blue solid lines). Head positions of the electrodes from which data were acquired are shown
in the right bottom panel (electrodes with labels written in black were contained in the ROIs
used for statistical evaluation). Grey shaded and grey dotted rectangles in the diagrams represent
the investigated time windows.
ERAN: The ERP data showed that an ERAN was elicited in the TLD group in response
to the irregular supertonics compared to the regular tonics (M = -2.17 μV,
SEM = 0.33 μV; anterior ROIs). The ERAN peaked around 240 ms and was most
prominent over frontal leads (see Figure 10-3). In contrast, in the SLI group the response
in the ERAN time window had an inverted polarity and its amplitude was very