Motoneuron rheobase current after nerve crush Bar chart show the averages of mean values obtained from individual experiments for each group (control, n = 10; 6 day crush, n = 3; 1 month crush, n = 2). By 6 days following nerve crush, rheobase mean values have decreased to postaxotomy levels. After 1 month, mean values nearly recovered to control levels. Motor unit EMG recordings show that reinnervation after MG nerve crush commenced by 6 days (see text). In this and all following illustrations, error bars represent 1 s.e.m.