Néstor J Oviedo, Cindy L Nicolas, Dany S Adams, Michael Levin
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Abstract
INTRODUCTIONThis protocol describes how to use the anionic membrane voltage-reporting dye DiBAC(4)(3) to generate images of cell membrane potential in live planarians. These images qualitatively reveal variations in time-averaged membrane potential across different regions of the organism. Changes in these images due to experimental treatments reveal how the particular treatment affects this physiological parameter. This method is a great improvement over standard electrophysiological techniques, which cannot be used to gain an understanding of the electrical properties of an entire worm or a regenerating fragment, due to small cell size and large cell number. When the proper controls are performed, this technique is a very powerful and simple way to gather physiologic data.
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