Table 3.

Oscillation power in fixed and variable stimulus location tasks^a

	Fixed location (FR)			Variable location (FR)
	${\overline{P}}_{\text{pre}}^{12:20}$	${\overline{P}}_{\text{post}}^{12:20}$	p	${\overline{P}}_{\text{pre}}^{12:20}$	${\overline{P}}_{\text{post}}^{12:20}$	P
Nt	0.8 ± 0.2	1.0 ± 0.2	0.06	0.3 ±0.1	3.4 ± 2.0	0.04
Br	0.8 ± 0.1	0.9 ± 0.2	0.61	0.2 ± 0.1	2.2 ± 1.0	0.0007
Combined	0.88 ± 0.12	0.97 ± 0.13	0.11	0.40 ± 0.10	2.6 ± 0.9	0.00001

^aUnits are sp²s^–2. FR, Free response task.