Table 2 Comparing the measured magnitudes of each of the field components before and after field nulling.

From: Balanced, bi-planar magnetic field and field gradient coils for field compensation in wearable magnetoencephalography

Field Component

Nulling OFF

Nulling ON

Reduction Factor

Bx

16.0 ± 0.1 nT

0.30 ± 0.04 nT

53

By

2.9 ± 0.1 nT

0.11 ± 0.13 nT

26

Bz

17.0 ± 0.2 nT

0.49 ± 0.15 nT

35

Gx

6.1 ± 0.9 nT/m

0.9 ± 0.4 nT/m

7

Gy

2.5 ± 0.9 nT/m

1.8 ± 0.9 nT/m

1.4

Gz

3.4 ± 0.8 nT/m

1.3 ± 0.3 nT/m

3

  1. Errors are standard deviation from the mean.
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