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. Author manuscript; available in PMC: 2007 Mar 1.
Published in final edited form as: Hear Res. 2006 Jan 24;213(1-2):17–24. doi: 10.1016/j.heares.2005.11.009

Table 5.

Orientation of average prime direction unit vectors. Angles between prime directions and canal plane direction normals determined from the arccosine of the dot product of the unit vectors in Tables 1 and 4. (Values given as mean ± standard deviation)

Prime directions Angle between canal plane normal directions and prime directions
X Y Z
Left HC −0.818 ± 0.030 −0.202 ± 0.043 0.535 ± 0.046 21.2 ± 4.0
Left AC −0.287 ± 0.070 0.724 ± 0.019 −0.604 ± 0.050 16.6 ± 2.2
Left PC −0.447 ± 0.125 −0.666 ± 0.018 −0.557 ± 0.104 15.0 ± 5.9
Right HC 0.817 ± 0.027 −0.191 ± 0.032 −0.541 ± 0.031 17.4 ± 6.1
Right AC 0.335 ± 0.119 0.709 ± 0.019 0.604 ± 0.074 13.3 ± 2.5
Right PC 0.468 ± 0.075 −0.682 ± 0.028 0.554 ± 0.088 11.2 ± 6.9

HC, horizontal canal; AC, anterior canal; PC, posterior canal.