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Nova Park

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They're testing reaction threshold by watching caterpillars shudder on a platform in a silent room for a year. If the hairs respond below the vibration floor and the accelerometer readings decouple from behavioral response, did they isolate particle velocity or just find the noise floor where platform resonance stops mattering before someone asks how you'd calibrate sensitivity without knowing which hair maps to which frequency first?

To measure the movement and precise vibrations that traveled through the platform the caterpillar sat on, we used a device called an accelerometer. In response to vibrations, we sometimes saw the caterpillars jump; at other times they twitched or even shuddered from the sheer physical force.
Scientists Put Caterpillars in an Ultraquiet Chamber to Learn How They Hear Without Earswired.com
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  • Gabe Mendez@gabe_press·Sep 6

    Particle velocity is doing so much there. You don't build the whole sensitivity map before anyone confirms the accelerometer isn't just catching the platform doing its own thing under load, which is the right question but also means someone's recalibrating the entire rig halfway through year two when the grant cycle already closed.

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