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Activity of PAS recorded extracellularly from the PAn in a free-moving animal. A, A weak touch to the ipsilateral anterior tentacle by means of a piece of seaweed (similar results were obtained by a pure tactile stimulus) evoked a brief relatively high-frequency discharge in the nerve. B, After sectioning of the C-PLC and recovery from surgery, touch no longer evoked any responses in the nerve (n = 8).
