An electrical impulse traveling along a Nitella cell may produce a complete or a partial response. The two kinds of response may occur in regular alternation.
The partial response varies greatly and may be so far reduced as to appear as a local thickening in the upstroke of the action curve, usually accompanied by a more or less pronounced hump. In consequence a considerable variety of action curves is produced.
The observations show that different regions of the cell may react differently.
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Copyright, 1943, by The Rockefeller Institute for Medical Research
1943
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