Related Experiment Videos
Anosognosia and visuoverbal confabulation
T E Feinberg1, D M Roane, P C Kwan
1Department of Neurology, Mount Sinai School of Medicine, New York, NY.
Archives of Neurology
|May 1, 1994
Summary
Verbal confabulation, or making up answers, is a key factor in anosognosia for hemiplegia (AHP), where patients lack awareness of their paralysis. This study found confabulation is linked to unawareness of deficits.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Clinical Neurology
Background:
- Anosognosia for hemiplegia (AHP) is a deficit in self-awareness of motor deficits.
- Verbal confabulation, the production of false or distorted memories without the intention to deceive, is frequently observed in neurological conditions.
Purpose of the Study:
- To investigate the relationship between verbal confabulation and anosognosia for hemiplegia (AHP).
Main Methods:
- Compared patients with right hemisphere lesions and AHP to a control group with right hemisphere lesions but without anosognosia.
- Assessed visual identification of objects presented to the left hemifield under brief and prolonged conditions.
- Recorded responses as correct, incorrect (confabulations), or admission of failure to perceive.
Main Results:
- Patients with AHP exhibited higher confabulation rates and lower rates of admitting failure to perceive compared to non-anosognosic patients.
- These differences persisted regardless of stimulus presentation duration.
- No significant differences were found between groups regarding neglect severity, lesion characteristics, or other cognitive/sensory deficits.
Conclusions:
- Verbal confabulation plays a significant role in the manifestation of anosognosia for hemiplegia.
- Findings suggest that confabulation may contribute to the lack of self-awareness in patients with AHP.