Fig. 4. The gain of the roll-induced static vestibuloocular reflex (rVOR) in Xenopus laevis tadpoles with lordotic tail. Post-flight observations about the rVOR gain from tadpoles that flew on the 9.2-day SMM-06 mission compared to their ground-reared siblings. Same animals as in Fig. 3. rVOR gain30 = ratio between the angular eye movement and the lateral roll of 30° from the horizontal to the inclined position. For further explanations, see Fig. 3.