<prompt> The nucleus involved in Alzheimers disease is ?Basal nucleus of MayernetRaphe nucleusSuperior salivary nucleusBasal lobe of cerebellum  <response>: Ans is a i.e., Basal nucleus of Mayernet Alzheimer disease o Alzheimer disease AD is the most common cause of dementia in the elderly. o Alzeimers disease is associated with a decrease in cerebral coical levels of Acetylcholine. o Reduction of Acetylcholine is releated to degeneration of cholinergic neurons that project to many areas of coex. o This degeneration occurs in the nucleus basalis of Meyernet. 