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. 2010 Nov 12;300(2):H652–H663. doi: 10.1152/ajpheart.00859.2010

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Fig. 8. — Effects of TTX (100 nM and 1 μM) and lidocaine (2%) applied to the pool surrounding the dorsal roots on the compound action potential evoked by single-pulse electrical stimulation of the tibial nerve in 5 rats whose femoral artery was ligated 72 h before the start of the experiment. A: recording of the compound action potential recorded from a filament of the L₄ dorsal root. Note that both TTX (1 μM) and lidocaine abolished the compound action potential arising from the stimulation of group III and IV afferents in this particular instance. B: summary data from 5 rats in which the effects of TTX and lidocaine on the compound action potential (CAP) are expressed as a percentage of the control area. †A significant decrease (P < 0.05) in area of the CAP from control values.