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Electrophysiological activity is recorded from the ventral nerve mass of A. diadematus in response to direct vibration of the leg. Measurements taken under varied frequency and intensity conditions indicate that response maxima are in the region of 100 hertz with a threshold sensitivity less than 100 Å. The frequency response of the spiders leg does not correspond well to the frequency response of its web in a sound field.
American Zoologist © 1972 Oxford University Press