Relationship Between Executive Functions and Neuropsychiatric Disorders in Patients with Alzheimer's Disease of Different Degrees of Severity

The aim of the study was to investigate executive func-tions (EF) and neuropsychiatric disorders (ND) in pa-tients with Alzheimer's disease (AD) according to the degree of severity, compared to subjects without cog-nitive impairment (swci). Fifty patients with AD and 60 swci were studied in a non-experimental-cross-sectional study with non-probabilistic sampling based on a series of inclusion criteria. The frontal evalua-tion battery and the neuropsychiatric inventory were applied and the results showed that there is a negative relationship of moderate intensity between EF and ND, regardless of the degree of severity of AD. It can be concluded that, in the mild phase, euphoria is related both to sensitivity towards interference and to inhibi-tory control; in moderate phase irritability is positively related to sensitivity towards interference; and in the moderately severe phase, motor programming is nega-tively related to agitation.