Experiment 4– Projections of the dlPAG.

<p>Dark-field photomicrographs showing the distribution pattern of PHA-L immunoreactive axons in the rostral nucleus reuniens (A), the intralaminar and lateral dorsal thalamic nuclei (B), the parvicellular subparafascicular, peripeduncular, suprageniculate and medial geniculate nuclei (C), and the anterior hypothalamic nucleus and subfornical region of the lateral hypothalamus (D). Abbreviations: 3 V – third ventricle; AD – anterodorsal nucleus thalamus; AHNc – anterior hypothalamic nucleus, central part; CL – central lateral nucleus thalamus; CM – central medial nucleus thalamus; fx – fornix; LD – lateral dorsal nucleus thalamus; LHAd – lateral hypothalamic area, dorsal region; LHAsf – lateral hypothalamic area, subfornical region; MD – mediodorsal nucleus thalamus; MGd, m, v – medial geniculate complex, dorsal, medial and ventral parts; MRN – midbrain reticular nucleus; PT – paratenial nucleus; PVH – paraventricular hypothalamic nucleus; PVT – paraventricular thalamic nucleus; RE – nucleus reuniens; SGN – suprageniculate nucleus; SPFpl – subparafascicular nucleus thalamus, parvicelular part, lateral division; VAL – ventral anterior-lateral complex thalamus; VMH – ventromedial hypothalamic nucleus. Scale bars = 200 µm.