Figure 6. Model parameters.

(A) Relationship between the model-estimated and actual time constant across all participants in vestibular (green), visual (cyan), and combined (purple) conditions. Participant averages are superimposed (thick lines). Dashed line: unbiased estimation (Figure 6—source data 1). (B) Fitted model parameters: ratio $\lambda$ of prior (${\displaystyle {\sigma }_p}$) over likelihood (${\sigma }_l$) standard deviation and mean (${\displaystyle \mu }$) of prior. Error bars denote ±1 SEM. Dashed lines represent the corresponding values of the sampling distribution of $\phi =\log \tau$ , which is normal (see Materials and methods; Figure 6—source data 2). The prior distribution’s ${\displaystyle \mu }$ was comparable in the vestibular condition to the ${\displaystyle \mu }$ of the actual sampling distribution (sampling distribution $\mu$: 0.58 $\log s$ – p-value of prior ${\displaystyle \mu }$ difference obtained by bootstrapping – vestibular: p = 0.014, visual: p =< 10^–7; combined: p < 10^–7). Asterisks denote the level of statistical significance of differences in the fitted parameters across conditions (*: p<0.05, **: p<0.01, ***: p<0.001).