Symmetry of Spine Detection with respect to Orientation.

Spines detected according to orientation with respect to the XY plane, for automated versus manual methods. The first data column shows the total number of spines detected for each method. The second and third columns show the number of spines detected in the mostly horizontal orientation, and those numbers expressed as percentages of the total detected, respectively. The fourth and fifth columns show the number of spines of each type detected in the mostly vertical orientation, and those numbers expressed as percentages of the total. Both automated and manual methods tend to detect more spines in the mostly horizontal orientation, with slightly higher horizontal-to-vertical asymmetry in the manual method than the automated method.