1). Lower ERO energy in the parietal delta and theta bands (50–350 ms and 350–800 ms time window) was observed in response to rare tones, compared to standard tones (Table 1). Pairwise analyses indicated lower ERO mean energy in the frontal and parietal alpha/beta frequency band in response to standard and rare tones (vs. noise) during the 0–50 ms time window (Table 1). Lower ERO energy in the frontal and parietal alpha/beta bands (0–50 ms time windows) were also observed in response to standard tones, compared to rare tones (Table 1). In contrast, lower ERO energy in the frontal and parietal alpha/beta band (350–800 ms) was observed in response to noise tones, compared to standard tones (Table 1).
