Рseudodementia © 

Records of patients with mental illness,
The Great Medical Encyclopedia, the second edition in 36 volumes edited by Academician AN Bakulev (1962)
Pseudodementia (Wernicke pseudodementia) is a mental disorder expressed in abnormal, absurd actions and responses (mimicking), gross mistakes in solving the simplest tasks, seeming loss of elementary knowledge and orientation in the absence of severe obscuration of consciousness (for example, in hysteria, reactive psychoses).