Which of the following hypnotic drugs facilitates the inhibitory actionsof GABA but lacks anticonvulsant or muscle relaxing propeies and has minimal effect on sleep architecture?

Zolpidem, zaleplon and zopiclone are agonists at BZD receptors. These are hypnotic drugs that lack muscle relaxant and anticonvulsant actions. These have negligible effect on REM sleep and do not affect sleep architecture.