Correlations between SAT performance and falls and slips in the MCMCT (a, b) and between measures of MCMCT performance (c, d); square correlation coefficients for the relationship between the measures and for individual groups are indicated, together with levels of significance (as indicated in the legend of Fig. 2). In DL rats only, lower hits in the SAT predicted more falls in the MCMCT (a). In contrast, cholinergic cell loss, including in DL rats, appears to be specifically correlated with slips (b). Falls are correlated with slips and traversal time in all groups, except 6-OHDA rats (c, d), and traversal time and slips were significantly correlated in all groups (data not shown; see Results).