Fig. 3.

Sensory inputs from the tentacles to CC5.A, B, Intracellular recordings from the left and right CC5 in the same preparation were obtained in isolated head preparations. A, Contact with a fine von Frey hair applied to one tentacle (the right tentacle) evoked excitatory synaptic input and firing of the ipsilateral CC5 and little input in the contralateral CC5. B, When stronger stimulus was pressed strongly to the tentacle, there was excitatory input in both the ipsilateral and contralateral CC5, with the ipsilateral response stronger.C, D, In the presence of a solution containing high-divalent cations, synaptic input was seen only in the ipsilateral cell for both weak (C) and strong (D) stimuli (n = 8).