  Humans sense of distance depends on the integration of multi sensory cues.
The incoming visual luminance, auditory pitch and tactile vibration could all
contribute to the ability of distance judgement. This ability can be enhanced
if the multimodal cues are associated in a congruent manner, a phenomenon has
been referred to as Crossmodal correspondences. In the context of multi-sensory
interaction, whether and how such correspondences influence information
processing with continuous motor engagement, particularly for target searching
activities, has rarely been investigated. This paper presents an experimental
user study to address this question. We built a target-searching application
based on a Table-top, displayed the unimodal and Crossmodal distance cues
concurrently responding to peoples searching movement, measured task
performance through kinematic evaluation. We find that the Crossmodal display
an audio display lead to improved searching efficiency and accuracy. More
interestingly, this improvement is confirmed by kinematic analysis, which also
unveiled the underlying movement features that could account for this
improvement. We discussed how these findings could shed lights on the design of
assistive technology and of other multi sensory interaction.
