Neupsy Key

Cognitive Impairment David B. Arciniegas Thomas W. McAllister Daniel I. Kaufer I. Background A. Definitions Arousal—refers to a state of wakefulness that underlies the capacity to respond appropriately to environmental…

Delirium Walter Knysz III C. Edward Coffey I. Background A. Definitions Delirium refers to a clinical syndrome characterized by a disturbance of arousal, attention, perception, and other cognitive domains, which…

Apathy and Related Disorders of Diminished Motivation James D. Duffy Background Historical Context During the eighteenth and nineteenth centuries, disorders of motivation represented the theoretical foundation for most psychiatric classifications….