R Kehayov

Memory Effects of Standardized Extracts of<i>Panax ginseng</i>(G115),<i>Ginkgo biloba</i>(GK 501) and their Combination Gincosan® (PHL-00701)

V V Petkov, R Kehayov, Stiljana Belcheva et al. · Planta Medica · 1993 · 85 citations

Participation of different 5-HT receptors in the memory process in rats and its modulation by the serotonin depletor p-chlorophenylalanine

V V Petkov, Stilyana Belcheva, E Konstantinova et al. · Acta Neurobiologiae Experimentalis · 1995 · 31 citations · Full text

Neuropsychology, Neurotransmitter, Psychopharmacology +18

Effects of cytidine diphosphate choline on rats with memory deficits.

V D Petkov, R Kehayov, A H Mosharrof et al. · PubMed · 1993 · 26 citations

Neuropsychology, Neurotransmitter, Experiments Cdp-choline +18

Age-related differences in memory and in the memory effects of nootropic drugs.

V D Petkov, A H Mosharrof, V V Petkov et al. · PubMed · 1990 · 22 citations

Neuropsychology, Aging, Memory Effects +17

Effect of CDP-choline on learning and memory processes in rodents.

V D Petkov, A H Mosharrof, R Kehayov et al. · PubMed · 1992 · 12 citations

Neuropsychology, Psychopharmacology, Cognition +20