Distributions of spinothalamic, spinohypothalamic, and spinotelencephalic fibers revealed by anterograde transport of PHA-L in rats.

摘要: Fibers projecting from several levels of the spinal cord to diencephalon and telencephalon were labeled anterogradely with Phaseolus vulgaris leucoagglutinin injected iontophoretically. Labeled fibers in thalamus confirmed projections previously observed. In addition, many seen hypothalamus telencephalic areas not generally recognized as receiving such projections. hypothalamus, these included lateral (including medial forebrain bundle), posterior hypothalamic area, dorsal dorsomedial nucleus, paraventricular periventricular suprachiasmatic preoptic areas. telencephalon, ventral pallidum, globus pallidus, substantia innominata, basal nucleus Meynert, amygdala (central nucleus), horizontal vertical limbs diagonal band Broca, septal nuclei, bed stria terminalis, accumbens, infralimbic cortex, orbital cortex. These results suggest that somatosensory, possibly including visceral sensory, information is carried directly brain involved autonomic regulation, motivation, emotion, attention, arousal, learning, memory, sensory-motor integration. Many are associated limbic system.