Stultification

Stultification (from Latin stultus stupid) refers to the state of being or a situation or an action causing one to become
 * stupid or
 * foolish or
 * unsound

The silent implication of stultification in neurobiological terms is that certain external influences can have a lasting neural effect (reduction of the number of synapses, reduced number of interconnections between brain areas, less efficient signal transmission, etc). Such effects are studied by biopsychologists and psychosomatic medicine.