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Physiologia Bohemoslovaca|January 1, 1987
Influence of picrotoxin on the retinal sensitivity at different levels of background illuminationL Vitanova, A Penchev, P Kupenova, et al.
Acta Physiologica Et Pharmacologica Bulgarica|January 1, 1986
Effects of picrotoxin on the turtle's electroretinogram under different background illuminationP Kupenova, S Belcheva, L Vitanova, et al.
Acta Neurobiologiae Experimentalis|January 1, 1995
Participation of different 5-HT receptors in the memory process in rats and its modulation by the serotonin depletor p-chlorophenylalanineV D Petkov, S Belcheva, E Konstantinova, et al.
Brain Research|March 21, 1994
Hippocampal asymmetry in the behavioral responses to the 5-HT1A receptor agonist 8-OH-DPATI Belcheva, S Belcheva, V V Petkov, et al.
Acta Physiologica Et Pharmacologica Bulgarica|January 1, 1990
Effects of nootropic agents on the performing of active two-way avoidance tasks in young and old ratsV D Petkov, S Belcheva, V Stoyanova, et al.
Acta Physiologica Et Pharmacologica Bulgarica|February 15, 2000
Does nitric oxide participate in the mechanism of action of dotarizine?V D Petkov, S Belcheva, E Konstantinova, et al.
Neuropharmacology|August 1, 1994
Asymmetry in behavioral responses to cholecystokinin microinjected into rat nucleus accumbens and amygdalaI Belcheva, S Belcheva, V V Petkov, et al.
Comparative Biochemistry and Physiology. C, Comparative Pharmacology and Toxicology|February 1, 1993
Comparative investigation of retinal responses to brief light stimuli: 2-amino-4-phosphonobutyrate studies--I. Frog retina, Rana ridibundaL Vitanova, P Kupenova, E Popova, et al.
Comparative Biochemistry and Physiology. C, Comparative Pharmacology and Toxicology|February 1, 1993
Comparative investigation of retinal responses to brief light stimuli: 2-amino-4-phosphonobutyrate studies--II. Turtle retina (Emys orbicularis)L Vitanova, E Popova, P Kupenova, et al.
Comparative Biochemistry and Physiology. C, Comparative Pharmacology and Toxicology|January 1, 1990
Comparative studies on the effects of some enkephalin agonists on the ERG of frog and turtleL Vitanova, E Popova, P Kupenova, et al.
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