Table 1.

Firing properties of all recorded HD cells in the start box

	Mean	SEM	Range
Peak firing rate (spikes/s)	36.64	2.32	4.86–103.06
Background firing rate (spikes/s)	1.70	0.17	0.049–8.07
Directional firing range (degrees)	95.90	2.86	53.12–181.96
Mean vector length	0.72	0.015	0.44–0.95