Table 2.

Trends in J_avg, h_avg, and h_avg^int (20 ms bin)

Data type	Variable	Factual	Fcrit	df
All data, pooled	Javg	5.91*	2.85	3, 39
	havg	7.65*
	havgint	2.54
Spike data only	Javg	2.46	3.16	3, 18
	havg	2.94
	havgint	1.54
LFP data only	Javg	7.31*	3.07	3, 21
	havg	8.92*
	havgint	2.23

The interactions J_avg and local fields h_avg, h_avg^int change in strength as ensemble size is increased from 4 to 10. Interactions (J_avg) and local fields caused by cells outside the ensemble and intrinsic firing tendencies (h_avg) moved toward zero with increasing ensemble size (Fig. 6). However, local fields caused by cells within the ensemble (h_avg^int) became more negative. Significant changes at the p < 0.05 level are indicated by an asterisk. Table shows only data binned at 20 ms.