Chapter 9/Figure 7.jpg
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Differential distribution of various afferents in the cholinergic forebrain.
(A) - (B)-(C), (G), (I) Composite maps illustrating putative zones of contacts
between afferent fibers and cholinergic neuronal elements following PHA-L
injections into the (A) far-lateral hypothalamus, (B) mid-lateral hypothalamus,
(C) medial hypothalamus, (I) locus coeruleus. (G) shows the distribution
of putative contact sites from a material stained for dopamine-ß-hydroxylase
and choline acetyltransferase. (H): PHA-L labeled terminal varicosities
(arrow) in close apposition to a proximal dendrite of a cholinergic neuron.
The grid simulates the ocular reticle used to screen sections for high magnification
(63x) light microscopic analysis. One division of the grid = 16 microns.
Cholinergic neurons are represented by dots. Zones of putative contacts
between cholinergic elements and terminal varicosities are depicted as solid
squares (corresponding to 80 x 80 µm areas in the section). (D), (E), (F)
location of labeled cells at the PHA-L injection sites from cases depicted
in (A), (B), (C). Panels (A), (B), (C), (H) are modified from Cullinan and
Zaborszky [57] with kind permission from Wiley-Liss. Panels (G) and (I)
are modified from Zaborszky et al. [51], with permission from Elsevier Science.
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