Table 2.

Talairach coordinates (mm) of Synthetic Aperture Magnetometry (SAM) group averaged peak amplitude (Pseudo-T) for alpha and beta suppression preceding speech onset.

	AWS		FS
Anatomy	X, Y, Z	Pseudo-T	X, Y, Z	Pseudo-T
Beta
Left BA6	−46, −2, 28	−4.6	−46, −2, 28	−3.14
Right BA6	50, 2, 31	−3.4	50, 2, 31	−1.35
Left BA18	−18, −77, 17	−4.53	−18, −81, 21	−4.11
Right BA18	22, −73, 17	−4.99	22, −81, 21	−4.86
Alpha
Left BA13/41	−32, −44, 22	−2.09	−53, −23, 10	−1.31
Right BA41	53, −19, 14	−1.5	50, −23, 7	−1.01
Left BA18	−14, −81, 17	−3.82	−22, −84, 21	−4.03
Right BA18	22, −77, 20	−3.73	14, −85, 13	−4.3