Executive dysfunction can be present from the early stages of P arkinson's disease (PD). It is
characterized by deficits in internal control of attention, set shifting, planning, inhibitory …

Introduction Better awareness of the cognitive domains affected in non-demented
Parkinson's Disease (PD) should improve understanding of cognitive disease mechanisms …

Background: Parkinson's disease (PD) can result in cognitive impairment. Executive
dysfunction often appears early, followed by more widespread deficits later in the course of …

Inflammatory mechanisms have been implicated in a series of neuropsychiatric conditions,
including behavioral disturbances, cognitive dysfunction, and affective disorders …

Several studies have reported heterogeneity in cognitive symptoms associated with specific
characteristics of patients with Parkinson's disease (PD). Indeed, researchers have …

Cognitive impairment and depressive symptoms are of great interest in Parkinson's disease
(PD), since they are very common and lead to increased disability with poor quality of life …

Executive dysfunction is common in early stage Parkinson's disease (PD). We evaluated the
relationship between self-and informant-report measurement of real-world executive …

Background Deficits in executive functions (EFs) are frequently detected in patients with
Parkinson's disease (PD). The Frontal Assessment Battery (FAB) is a screening test for …

Background: Olfactory deficits and executive dysfunction have been reported in Parkinson's
disease (PD). However, the association between these deficits has not been thoroughly …

Background Changes in γ-aminobutyric acid (GABA) function are noted in patients with
Parkinson's disease (PD) who have some non-motor impairments. However, dopamine …