Ligand-binding-studies on twelve different receptors were used for scr
eening extracts from plants from Suriname (South-America). The results
on 5-HT1A, A(1) and NMDA receptors promote further investigation of M
icrotea debilis, Hibiscus bifurcatus, Irlbarchia purpurascens, Miconia
ciliata and Mimosa myriadena.