Following electrophysiological mapping of climbing fibre field potentials, evoked by ipsilateral fore- (A) and hindlimb (B) stimulation (Atkins and Apps, 1997; Teune et al., 1998; Pardoe et al., 2002), an injection of red latex beads was delivered into the PML C1-forelimb zone (C) and an injection of green latex beads was made into the COP C1-hindlimb zone (D). E and F: photomicrographs of red and green latex beads labelled pontine cells (respectively). PML: paramedian lobule COP: copula pyramidis.

C, D: Scale bars: 500 µm.
E, F:
Scale bars: 200 µm.