The impact of executive dysfunctions on Theory of Mind abilities in Parkinson's disease.

Theory of Mind (ToM) is the ability to infer and reason about others' mental states, a process impaired by Parkinson's disease (PD). ToM performance in PD seems to be strongly related to executive functioning but the exact nature of this relationship is still unclear. We aim to investigate the direct impact of several executive dysfunctions on ToM deficits (Affective and Cognitive ToM) in PD patients.

The role of the motor subtypes on the relationship between anxiety and cognitive dysfunctions in Parkinson's disease.

Anxiety is a common neuropsychiatric symptom in Parkinson's disease (PD). Until now, anxiety has been consistently related to cognitive deficits and severity of motor symptoms, whereas the association between anxiety and motor subtypes (TD-PD, tremor dominant and PIGD-PD, postural instability/gait disturbances dominant) revealed contrasting results. The present study aims to investigate the relationship between PD motor subtypes and anxiety and to explore whether the relationship between anxiety and cognitive deficits occurs in a specific PD motor subtype.

Prospective memory in Parkinson's disease: the role of the motor subtypes.

Background: Prospective memory (PM) is defined as memory for future intentions and it is typically divided into time-based and event-based PM. Deficit of PM has been reported in patients with Parkinson's disease (PD) but no study has yet explored the association between motor subtypes (tremor dominant and rigidity/bradykinesia dominant) and performance on PM tasks. The aim of the study was to explore the role of motor subtypes in the defect of PM.