Fig. 4. During the duration of an odor pulse, motor responses to visual and olfactory cues represent the linear superposition of responses to each stimulus presented alone. Data sets are segregated into responses to visual bias during control water vapor delivery (i; R_v), odor in the absence of visual bias (ii; R_o), both stimuli simultaneously (R_v+o; indicated by black lines, iii), and the sum of responses to each stimulus presented alone (R_v + R_o; indicated by red lines, iii). N=22.