Figure 1. Roving paradigm used in the current study, with the
calculation methods of the amplitude and latency of initial adaptation,
subsequent adaptation, and MMN.
Figure 2. The adaptation curves based on the P1 (a and b), N1 (c and d),
and P2 (e and f) peak amplitudes (left) and latencies (right) in each
position of the first ten tones (error bars indicate standard
deviations). *p < .006 based on
paired-sample t-tests of each consecutive tone pair.
Figure 3. (a) Waveform and (b) Topography of MMN (N = 37). (a)
The average MMN waveform (black) calculated by subtracting the
amplitudes in the final position of each train of stimuli
(4th position or after) from that in the deviants.
Data were pooled from 25 fronto-central electrodes (black dots at the
top-left corner). Waveforms of deviants and the final tones are shown in
red and blue respectively. The highlighted part indicates the MMN time
window (76–196 ms). (b) From left to right, the topographic maps of
deviants, final tones in 4th to 30thpositions, and the corresponding MMN.
Figure 4. Scatter plots of significant correlations or regressions
between MMN and the adaptation variables, including (a) N1 initial
adaptation amplitude, (b) P1 initial adaptation amplitude, (c) P2
subsequent adaptation amplitude, and (d) P2 subsequent adaptation
latency. Each dot indicates a datum from each participant (N =
29).
Figure 5. Scalp topographies based on the average individual peak
amplitude (N = 37). (a) From left to right, the topographic maps
of deviants, 2nd tones, and the ensuing initial
adaptation in the N1. (b) From left to right, the topographic maps of
2nd tones, final tones (4th to 30th positions), and
the ensuing subsequent adaptation in the P2.
Figures
Figure 1