Causal inference regulates audiovisual spatial recalibration via its influence on audiovisual perception
Fig 9
Cue reliability and the amount of recalibration.
(A) Non-linear effect of visual stimulus reliability in bimodal trials (; different panels) on the auditory spatial estimate
(green vertical lines). Blue and red dashed vertical lines and curves: auditory and visual measurements (
and
in perceptual space) and likelihood functions, respectively. Blue: when separate causes are assumed, the auditory measurement and likelihood equal the auditory location estimate
and the posterior distribution over auditory locations (a flat prior over stimulus location is assumed). Grey dashed vertical lines and curves: audiovisual location estimates
and posterior distributions of audiovisual locations conditioned on a common cause. (B-D) The effect of visual reliability on the posterior probability of a common cause,
, the integrated location estimate, i.e., the estimate conditioned on a common audiovisual source
, and the distance between auditory measurement and location estimate
, which directly sets the amount of recalibration.