We investigated the perceived frequency elicited by two vibrating probes on the skin. Participants (n = 11) compared two probes vibrating in counter-phase (25 Hz), with comparison stimuli of in-phase vibration (18-54 Hz). They indicated which had the higher perceived frequency. Skin sites on the palm (glabrous) and arm (hairy) were tested with a range of probe separations (1-16 cm) and amplitudes (10-120 μm). Perceived frequency increased with decreasing separation of the probes (F1,10 = 182.8, p < 0.001). The two skin sites did not significantly differ (F1,10 = 3.6, p = 0.087). Perceived frequency was only minimally affected by amplitude changes between 40 and 120 μm (F2,20 = 6.4, p = 0.007, n2G ¼ 0:06). Both phase and spatial separation strongly influence vibrotactile interaction between two skin locations in a manner largely independent of changes in amplitude, and of skin type.
CITATION STYLE
McIntyre, S., Birznieks, I., Andersson, R., Dicander, G., Breen, P. P., & Vickery, R. M. (2016). Temporal integration of tactile inputs from multiple sites. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 9774, pp. 204–213). Springer Verlag. https://doi.org/10.1007/978-3-319-42321-0_19
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