Fig. 2. Visual and olfactory stimuli evoke robust, repeatable, motor responses. (A) Sample responses to a regime of 1.25-s visual bias, 10-s odor and both stimuli presented simultaneously. Onset of stimuli is indicated in last two rows. (B) Time series averages to multisensory stimulus patterns. Gray fill shows the envelope of S.D. (C) Time-expanded responses. The shaded regions in the last two rows of A and B correspond to the data presented in C and D. Sample responses from A (indicated by thin black lines) are overlaid with mean responses from B (indicated by thick red lines). The arrow in column (i) indicates phasic modulation of image velocity (see text). The arrow in column (ii) highlights a transient decrease in WBA at the onset of the odor pulse (see text). (D) Odor did not alter the mean responses to imposed bias during closed-loop control of a single vertical stripe (i; N=10), a rotating random checkerboard pattern (ii; N=10) or an expanding flow field centered laterally (iii; N=10). R_v, response to visual stimulus; R_o, response to olfactory stimulus; R_v+o, response to visual and olfactory stimuli simultaneously.