The Standard Pontine Coordinate System
A: 3-D recontruction of the ventral brainstem at the level of the pons. View from ventral.
Reference frame, basis for the coordinate system (same as in C): Solid
and dotted lines
B: Photograph of the rat bainstem from ventral.
C - E: The reference frame and relative coordinates (0 - 100) for the pontine
nuclei from 3 standard angles of view. The origin of the coordinate system
is defined as the crossing of the midline and a line tangential to the rostral
end of the pontine nuclei. The thin curved lines represent the boundaries
of the pontine nuclei.
Bar 500 µm., A, anterior; D, dorsal; M, medial; R, rostra
l