<prompt> Neurotransmitter changes proposed in cases of AnxietyIncreased NE, and decreased GABA and serotoninDecreased NE and serotonin, and increased AchDecreased GABA and AchIncreased serotonin, and decreased NE and GABA  <response>: There are various neurotransmitters that is studied under the neurobiology of anxiety they are mainly as follows decreased GABA, hence benzodiazepines which acts on GABA is a onderful anti anxiety drug decrased serotonin , hence SSRI are used in management of all anxiety disorders increased norepinephrine, thus proponolol which is a beta blocker is used in the management of anxiety especially in social anxiety disorders. Reference: Kaplon and sadock, 11 th edition, synopsis of psychiatry, 11 th edition, pg no. 387 