Nolen T G, Hoy R R
Science. 1984 Nov 23;226(4677):992-4. doi: 10.1126/science.6505681.
Flying crickets avoid sources of ultrasound, possibly echolocating bats, by making rapid steering movements that turn them away from the stimulus. Electrical stimulation of a single, identified sensory interneuron (Int-1) elicits avoidance steering; depressing its response to ultrasound abolishes avoidance steering. Int-1 is necessary and sufficient for this behavior but only while the cricket is in flight. Thus, the sufficiency of Int-1 for eliciting this behavior is contingent on behavioral context.
飞行中的蟋蟀会通过快速转向运动远离超声源（可能是正在进行回声定位的蝙蝠）。对单个已识别的感觉中间神经元（Int-1）进行电刺激会引发回避转向；抑制其对超声的反应会消除回避转向。Int-1对于这种行为是必要且充分的，但前提是蟋蟀处于飞行状态。因此，Int-1引发这种行为的充分性取决于行为背景。
