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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.