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How a sand scorpion determines the distance to its prey
BMC Neuroscience volume 10, Article number: P114 (2009)
The sand scorpion Paruroctonus mesaensis is able to determine the distance to its prey . Experimental data shows that a sand scorpion, which has a diameter of 5 cm, can accurately determine distances up to 15 cm with an error of about 1 cm. For distances exceeding 15 cm, a scorpion must only move approximately 10 centimeters towards the source before receiving another cue. We have identified a mechanism that would allow a scorpion to match a unique pattern to each distance and developed a neuronal model that performs distance determination up to the precision needed. Generalization to other animals is considered.
Brownell PH: How the sand scorpion locates its prey. Science. 1977, 197: 497-482. 10.1126/science.197.4302.479.
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Utz, R., van Hemmen, L. How a sand scorpion determines the distance to its prey. BMC Neurosci 10, P114 (2009) doi:10.1186/1471-2202-10-S1-P114
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