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Related Experiment Videos

Metacognitive deficits in frontotemporal dementia.

P J Eslinger1, K Dennis, P Moore

  • 1Department of Neurology-H037, Penn State Milton S Hershey Medical Center, PO Box 850, Hershey, PA 17033-0850, USA. peslinger@psu.edu

Journal of Neurology, Neurosurgery, and Psychiatry
|November 18, 2005
PubMed
Summary

Frontotemporal dementia (FTD) patients, especially those with social and executive deficits, show significant self-awareness loss. This metacognitive impairment, termed anosognosia, impacts their understanding of behavioral changes.

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Neurology

Background:

  • Frontotemporal dementia (FTD) is a neurodegenerative disease affecting behavior, personality, and language.
  • Metacognitive functions, including self-awareness and self-monitoring, are crucial for social interaction and daily functioning.
  • Impairments in self-awareness have been anecdotally reported in FTD but require systematic investigation.

Purpose of the Study:

  • To investigate metacognitive impairments in self-awareness and self-monitoring in patients with FTD.
  • To determine if these impairments are more pronounced in FTD subtypes with social and dysexecutive deficits.
  • To compare metacognitive abilities in FTD patients with those in Alzheimer's disease (AD) and healthy controls.

Main Methods:

  • Patients with FTD (categorized by subtype: social-dysexecutive, aphasic) and probable AD were compared with healthy controls.

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  • Behavioral self-ratings were compared with caregiver ratings.
  • Self-ratings of performance on cognitive tasks (verbal fluency, memory) were compared with actual performance.

    • Main Results:

    • FTD patients exhibited significantly reduced behavioral self-awareness and self-knowledge compared to AD and control groups.
    • FTD patients with social and dysexecutive impairments showed the most severe self-awareness deficits, overrating themselves and failing to recognize behavioral changes.
    • All clinical groups were unaware of their apathy levels; most FTD patients adequately judged cognitive task performance, with some exceptions.

    Conclusions:

    • FTD patients, particularly those with social and dysexecutive impairments, display profound metacognitive anosognosia (lack of self-awareness).
    • This anosognosia is likely linked to prefrontal cortex dysfunction.
    • Other FTD subtypes and AD patients showed less widespread metacognitive deficits.