Table 1.

Behavioral data.

		Strong clutter	Weak clutter	No target
PRE-SCAN TRAINING
Asymptotic level performance (% correct ± SEM)		78 ± 2	80 ± 5
Number of pre-asymptotic training blocks	Median	10	8
	Range	8–14	7–12
DURING THE SCAN
Performance (% correct ± SEM)		78 ± 3	77 ± 4	85 ± 1
Reaction time (Mean ± SEM) (ms)	Correct trials	826 ± 6	820 ± 5	870 ± 3
	Incorrect trials	916 + 11	903 + 8	948 + 8