Discussion and Interpretation of the Changes Provoked By Zero Gravity on the Otolith Unit of Frogs

I would like to make some comments about the stages and the problems that such an experiment had. The first very difficult problem was technical. Whoever is accustomed to working with microelectrodes, and recording from single fibers or single cells in a living human being, and especially in an unanesthetized living being, knows that it is very difficult. It is very difficult even when you deal with perfect laboratory conditions in a shielded room with a perfectly nonvibratory support, and so forth. So we had to revise our technique to be able to record from single units after the vibration and high acceleration of the takeoff, and we had to find a way of maintaining the recording for a long time. We are planning to record for 3 days, which is also a major achievement. I do not think that anyone up to now has ever been able to record from a single unit more than 6 or 7 hours, or 10 hours at the most.