The name is absent

93

alone could not reliably produce a somatosensory percept. However, there was a
significant interaction between the auditory stimulus and somatosensory stimulus
factors (F₁,_ιg = 6.69, p = .02), showing that sound can modulate somatosensory
perception. As shown in Figure 1 and Table 1, this interaction was due to a significant
increase in the detection rate for somatosensory stimuli when they were accompanied
by an auditory stimulus (61.6% vs. 57.4%; t_ιg = 2.121, p = .047). Importantly, although
the sound increased the detection rate when a somatosensory stimulus was presented,
the sound did not increase the false alarm rate for reporting a somatosensory stimulus
when none was presented (3.4% for sound present vs. 3.4% for sound absent; F < 1).
This shows that increase in the detection rate for somatosensory stimuli with sounds
was not due to confounding factors, such as feeling mechanical vibrations or air
pressure from the speakers.

Figure 1. The data from Experiment 1 examining the effects of audition on touch perception.
The left half of the figure shows the hit rates, whereas the right half of the figure illustrates
the false alarm rates. Error bars reflect ±1 standard error of the mean.

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