Fig. 5. Processing of in-flight stimuli and correction turns. If the initial stimulus was emitted by LS 1 and the in-flight stimulus by LS 2, the angle of the correction turn required to hit the target is smaller for a short in-flight stimulus delay (A) than for a longer delay (B). T is the take-off of the owl for target strike. The black horizontal arrow marks the moment where the in-flight stimulus is given, C refers to the beginning of the correction turn. The neuronal and motor processing time is assumed to be constant for any stimulus delay.