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Prospective memory performance in individuals with Parkinson's disease who have mild cognitive impairment

Alberto Costa1, Antonella Peppe1, Silvia Zabberoni1

  • 1Department of Clinical and Behavioral Neurology, IRCCS Santa Lucia Foundation.

Neuropsychology
|February 3, 2015
PubMed
Abstract

Insights

Prospective memory deficits in Parkinson's disease are linked to mild cognitive impairment, not just the disease itself. Executive function, not memory, impacts prospective memory performance and daily functioning.

Area of Science:

  • Neuroscience
  • Cognitive Psychology

Background:

  • Prospective memory (PM) is crucial for daily functioning, involving the ability to remember and execute future intentions.
  • Parkinson's disease (PD) is often associated with cognitive impairments, but the specific impact on PM is not fully understood.

Purpose of the Study:

  • To investigate if prospective memory deficits in Parkinson's disease are associated with mild cognitive impairment (MCI).
  • To explore the cognitive underpinnings of prospective memory performance in PD.
  • To examine the relationship between prospective memory and daily living functioning in PD patients.

Main Methods:

  • A study involving 15 PD patients with single-domain MCI, 15 with multiple-domain MCI, 17 PD patients without cognitive disorders (PDNC), and 25 healthy controls (HCs).
  • All participants completed a prospective memory task with focal and nonfocal conditions.
  • PD patients underwent extensive neuropsychological testing and daily living ability assessments.

Main Results:

  • PD patients with MCI exhibited significantly lower prospective memory accuracy across all conditions compared to both HCs and PDNC patients.
  • Prospective memory performance in PDNC patients was comparable to HCs.
  • Executive functioning, specifically shifting abilities, predicted prospective memory performance.
  • Prospective memory accuracy was a significant predictor of daily living functioning scores in PD patients.

Conclusions:

  • Prospective memory impairment in Parkinson's disease is primarily linked to the presence of mild cognitive impairment.
  • Reduced executive functioning, rather than episodic memory decline, significantly contributes to prospective memory deficits in PD.
  • Prospective memory performance is associated with overall daily functioning and medication management in individuals with Parkinson's disease.

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