Fertilization potential in golden hamster eggs consists of recurring hyperpolarizations

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Abstract
The fertilization potential, or activation potential, was demonstrated in the eggs of various species; it blocked polyspermy in echinoderm, echiuran and frog eggs, but no studies were reported of electrical phenomena occurring when mammalian eggs are fertilized. The fertilization potential of golden hamster eggs in vitro is reported. To correlate the change of potential with the interaction between sperm and egg, only 1 sperm was attached to each egg. A sperm induced recurring hyperpolarizations, constituting a fertilization potential which differed from that in the eggs of other species.