introduction: the antinociceptive effect of morphine is, in part, mediated through the activation of a descending pathway. one of the major components of this pathway is the nucleus raphe magnus (nrm). our previous study demonstrated the involvement of nrm in the analgesic effect of morphine microinjected into the nucleus cuneiformis (ncf) in a descending manner. the aim of the current study wa...

a b s t r a c tintroduction: the nucleus cuneiformis (ncf) and ventrolateral periaqueductal gray (vlpag), two adjacent areas, mediate the central pain modulation and project to the nucleus raphe magnus (nrm). methods: this study examined whether the antinociceptive effect of morphine microinjected into the ncf is influenced by inactivation of vlpag and nrm in rats. animals were bilaterally micr...

Quasielastic K-nucleus scattering data at q5290, 390, and 480 MeV/c are analyzed in a finite nucleus continuum random phase approximation framework, using a density-dependent particle-hole interaction. The reaction mechanism is consistently treated according to Glauber theory, keeping up to two-step inelastic processes. A good description of the data is achieved, also providing a useful constra...

We discuss two recent topics on heavy-ion quasi-elastic scattering at energies around the Coulomb barrier. The first topic is an application of quasi-elastic scattering at deep-subbarrier energies to extracting the surface diffuseness parameter of the nucleus-nucleus potential. The second topic is a coupled-channels analysis for the quasi-elastic barrier distribution for the 70Zn + 208Pb reacti...

Data for the scattering of 6He, 8He, 9Li, and 11Li from hydrogen are analyzed within a fully microscopic folding model of proton-nucleus scattering. Current data suggest that of these only 11Li has a noticeable halo. For 6He, we have also analyzed the complementary reaction 6Li(γ, π)Hegs. The available data for that reaction support the hypothesis that 6He may not be a halo nucleus. However, th...

The excitation of a ∆-isobar in a finite nucleus in charge–exchange (3 He,t) reaction is discussed in terms of a nuclear response function. The medium effects modifying a ∆-and a pion propagation were considered for a finite size nucleus. The Glauber approach has been used for distortion of a 3 He and a triton in the initial and the final states. The effects determining the peak positions and i...

Data for the scattering of 6 He, 8 He, 9 Li, and 11 Li from hydrogen are analyzed within a fully microscopic folding model of proton-nucleus scattering. Current data suggest that of these only 11 Li has a noticeable halo. For 6 He, we have also analyzed the complementary reaction 6 Li(γ, π +) 6 He gs. The available data for that reaction support the hypothesis that 6 He may not be a halo nucleu...