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“In addition, injection experiments provide evidence that TEA+ and 4-AP applied internally to normal fibres effectively block potassium outward current, whereas in exhausted fibres the block seems to be smaller.”
“Exposure of the mechanically sensitive receptive fields to 4-aminopyridine (100 microM-1 mM) caused pronounced action potential discharge in all fibres studied.”
“Application of 4-AP to immature myelinated fibres leads to a delayed membrane depolarization with action potential burst activity in response to a single stimulus5.”