W29 Comparing Bayesian models for multisensory cue combination without mandatory integration Ulrik R. Beierholm, Konrad Körding, Ladan Shams & Wei Ji Ma C Relative number of button presses 0.6 C=1 C=2 s sA sV 0 -10 10 0 Perceived position of sound [deg] xA xV xA xV Does the human brain optimally estimate the underlying causal structure when perceiving multisensory stimuli?