If the data to be stored is longer than the number of characters allowed, the data is truncated. For example, if a column is defined as char(10) and the value This is a really long character string is stored into the column, SQL Server truncates the character string to This is a . The char data type is a fixed-length data type when the NOT NULL clause is specified.
Freebase(0.00 / 0 votes)Rate this definition: Basal ganglia. The basal ganglia are a group of nuclei of varied origin in the brains of vertebrates that act as a cohesive functional unit. They are situated at the base of the forebrain and are strongly connected with the cerebral cortex, thalamus and other brain areas.
The nucleus basalis magnocellularis (aka Nucleus Basalis of Meynert (' NBM)) is a nucleus in the basal ganglia. This is a group of cholinergic neurons in the substantia innominata of the basal forebrain which has wide projections to the neocortex and is rich in acetylcholine and choline acetyltransferase.n Parkinson and Alzheimer diseases the nucleus undergoes degeneration. A decrease in acetylcholine production is seen in Alzheimer's disease, Lewy body dementia and some Parkinson disease patients showing abnormal brain function, leading to a general decrease of mental capacity and learning.