Significantly above-chance decoding accuracies shortly after stimulus presentation (0100 ms), after training and testing only on magnetometer-derived single trials of random tones. Colored shades reflect the standard error of classification accuracy. The dashed black line marks the chance level at 25%, while the solid-colored horizontal lines mark significant time clusters using cluster-based permutation analysis. Note that in wakefulness, the tones could be decoded up to 550 ms after stimulus onset, replicating previous findings.