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. Author manuscript; available in PMC: 2012 Apr 1.
Published in final edited form as: Exp Brain Res. 2011 Mar 4;210(1):45–55. doi: 10.1007/s00221-011-2604-4

Fig. 2.

Fig. 2

Filtered traces (0.05 Hz) of drops in BP (a) and HR (b) produced by stimulation at frequencies of 0.04–0.4 Hz and stimulus currents of 2 and 4 mA, as noted in box in a. There was an initial drop and recovery in both BP and HR in all recordings, but the time of recovery varied. c Modulations in BP (1st trace) and HR (2nd trace) of Rat #578, during 20 cycles of sGVS at 0.025 Hz. The black lines in the 1st and 2nd traces are the means of the responses. The red line is a sinusoidal fit at double frequency. The bottom trace is the stimulating sinusoid. d Increases in amplitude of sinusoids at 0.025 Hz when evoked by stimulus currents of 2–4 mA. e, f Amplitude of the modulations in BP and HR (ordinates) induced by different stimulation frequencies (abscissa)