Summary
The activity of single vibration-sensitive neurons in the leg nerve of the fiddler crabUca pugilator was recorded extracellularly. All units recorded from fall into two groups according to basic differences in their spectral threshold curves. The first type of neuron can be excited over a broad frequency range (ca. 2–2,000 Hz) with minimal threshold at 15–30 Hz with 0.5–1.0 cm/s2 (peak). The second type of neuron, in contrast to the first one spontaneously active, is excited only in the frequency range 2–100 Hz and shows a decrease in the nerve impulse rate at vibration frequencies up to 2 kHz. The intensity necessary for complete suppression of the firing activity is 80 cm/s2 at 800 Hz, the range of frequency most sensitive for inhibition.
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References
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Aicher, B., Tautz, J. ‘Peripheral inhibition’ of vibration-sensitive units in the leg of the fiddler crabUca pugilator . J. Comp. Physiol. 154, 49–52 (1984). https://doi.org/10.1007/BF00605389
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DOI: https://doi.org/10.1007/BF00605389