  Changes in body perception influence behavior and emotion and can be induced
through multisensory feedback. Auditory feedback to one's actions can trigger
such alterations; however, it is unclear which individual factors modulate
these effects. We employ and evaluate SoniWeight Shoes, a wearable device based
on literature for altering one's weight perception through manipulated footstep
sounds. In a healthy population sample across a spectrum of individuals (n=84)
with varying degrees of eating disorder symptomatology, physical activity
levels, body concerns, and mental imagery capacities, we explore the effects of
three sound conditions (low-frequency, high-frequency and control) on extensive
body perception measures (demographic, behavioral, physiological,
psychological, and subjective). Analyses revealed an impact of individual
differences in each of these dimensions. Besides replicating previous findings,
we reveal and highlight the role of individual differences in body perception,
offering avenues for personalized sonification strategies. Datasets, technical
refinements, and novel body map quantification tools are provided.
