Fig. 3.

Psychometric data for PH (with black data points and interpolation using a broken line), and for healthy young (black continuous function) and older (grey) groups. a) TOJ: proportion of ‘voice second’ reports (y-axis) for different auditory lags (negative x-values for auditory lead), interpolated with a logistic function. Horizontals indicate the PSS with 95% confidence intervals based on bootstrapped estimates for PH and on SEMean for controls. b) Phoneme discrimination task: proportion of responses following lip-movement, averaged across incongruous conditions only, interpolated using ADS functions. Auditory lag for tMcG was read off at the maximum.