Table 3.

General circuit for peripheral single discrimination: % rCBF increases

		ldlo−det	lo−det	ld−det	ro−det	rd−det	single−det	Z
R LPs	18,−68,44	5.49	3.10	4.05	2.83	4.09	3.91	5.08
BA7
R IPS	36,−42,36	4.39	1.43	3.88	3.21	3.55	3.01	4.39
BA40
R upper GPrC	34,−8,40	3.84	1.94	3.30	2.44	3.58	2.81	4.70
BA6
R lower PrCS	44,4,28	2.34	1.91	2.68	2.65	3.00	2.52	4.31
BA6/44
L pulvinar	−18,−26,4	3.78	3.66	3.11	3.74	3.50	3.56	4.66

First experiment. Increases revealed by the subtraction of detection activity from mean activity over the discrimination conditions. Anatomical name, Talairach coordinates, percentage rCBF difference, and Z score. Threshold: corrected p< 0.05. All rCBF differences between active conditions and detection (det) are expressed as a percentage of detection rCBF. single refers to mean activity in the four single discrimination conditions. The Z score refers to the single-det comparison. LPs, Superior parietal lobule; IPS, intraparietal sulcus; GPrC, precentral gyrus; PrCS, precentral sulcus.