In biology, a taxis is the response of an organism to an environmental stimulus.
Galvanotaxis (or electrotaxis) is the movement of an organism in response to an electric field.
If platinum electrodes are inserted into a chamber filled with water containing a culture of paramecium, when an electric current is introduced into the chamber, the paramecia move towards the negative electrode.
I simulated galvanotaxis in Scratch. Click on the play button to watch a video of the Scratch project in action.
You can view and download the project by clicking on this link.
A description of the code and how it works is available on request by sending an email to: