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Arvanitaki contributed to the field of neurophysiology with research that explored the giant nerve fibres in genera of gastropods, the sea hare Aplysia and the land snail Helix.
She was married to Nick Chalazonitis, who was also a neurophysiologist; they both explored the methodology of electrophysiological activity of the nervous system of the sea hare genus Aplysia.
Some gastropods, such as the sea hare Aplysia, appear to lack respiratory pigments altogether.