Activity 4: • What was the peak voltage at R1 and R2 when youfirst stimulated the neuron using 30mV? • What does TTX do tovoltage-gated Na+ channels? • What does lidocaine do tovoltage-gated Na+ channels? How does the effect of lidocaine differfrom the effect of TTX? • Can someone affected by TTX be treated? •Pain-sensitive neurons (called nociceptors) conduct actionpotentials from the skin or teeth to sites in the brain involved inpain perception. Where should a dentist inject the lidocaine toblock pain perception?
