Fig. 5.

Cueing effects persist after controlling for head position biases. (A) Head position and orientation were monitored for each bird on each trial. Lateral displacement (Δ) and yaw (θ) of the head relative to the vertical plane perpendicular to the display and passing through the zeroing cross. The red annulus represents the side of the cue. (B) Psychometric functions of percent correct without (gray) or with (red) the spatial cue, as a function of relative target strength, after excluding trials in which the head was in a biased position (population data). Solid lines are the cumulative Gaussian fits. Dashed lines are the fits based on the entire dataset (repeated from Fig. 1F). Other conventions are the same as in Fig. 1F. (C) Same as in B, but for response times. Other conventions are as in Fig. 1G. (D) Same as in B, but for percent correct with valid (red) and invalid (blue) cueing. Other conventions are as in Fig. 4B. (E) Same as in D, but for response times. Other conventions are as in Fig. 4C.