Here attached a spectrogram showing that for the SIB1 injection the effect is visible in LSC_DARM up to 800 Hz, even if fleeble. This seems not the case for the later injection at SDB1 which is visible only up to 300 Hz.
Interestingly, between 960 and 1000 Hz there is a wandering line, best seen in the second attached spectrogram.
