(PO-041) Perceptual Alterations in Patients with Functional Neurological Disorder
Background: There is growing neurobiological evidence suggesting that Functional Neurological Disorder (FND) arises from a lack of awareness. It also has similarities with other neurological disorders such as anosognosia and negligence syndrome. This has been associated to a reduction in the activity of the TPJ and its connections to other cortices.
Objective: Test if patients with FND present neuropsychological deficits compatible with neurobiological models of functional unawareness according to executive functions, emotional recognition and self-monitoring. Methods: Thirteen patients with FND were evaluated with the following tests: Wisconsin Card Sorting Test to test executive functions (self-monitoring, attention, perseverance, among others), Emotional Recognition Index for facial and verbal emotional recognition, and the Patient Competency Rating Scale to evaluate how patients and caregivers perceive their own functional deficits.
Results: Compared to the general population, FND patients had significantly less verbal emotional recognition and more total errors and more perseverance errors in the WCST. Patients measured themselves as competent as their family members rated them, but below the general population. There were no significant clinical or demographical associations.
Conclusion: This contributes to the neurobiological evidence that conceptualizes the FND as a disease related to unawareness, with neuropsychological evidence of impaired self-monitoring, tendency to perseverance and poorer emotional recognition.
Understand perceptual errors that may be involved in the development of Functional Neurological Disorders