Discriminating facial expressions of emotion and its link with perceiving visual form in Parkinson's disease

Abstract We investigated the link between the ability to perceive facial expressions of emotion and the ability to perceive visual form in Parkinson's disease (PD). We assessed in individuals with PD and healthy controls the ability to discriminate graded intensities of facial expressions of an...

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Bibliographic Details
Published in:Journal of the neurological sciences 2014-11, Vol.346 (1), p.149-155
Main Authors: Marneweck, Michelle, Hammond, Geoff
Format: Article
Language:English
Subjects:
Aged
Aged, 80 and over
Anger
Emotion perception
Emotions
Facial Expression
Facial expressions
Female
Humans
Male
Middle Aged
Neurology
Neuropsychological Tests
Parkinson Disease - physiopathology
Parkinson Disease - psychology
Parkinson's disease
Photic Stimulation
Radial frequency pattern
Recognition (Psychology)
Visual form perception
Visual function
Visual Perception
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Summary:Abstract We investigated the link between the ability to perceive facial expressions of emotion and the ability to perceive visual form in Parkinson's disease (PD). We assessed in individuals with PD and healthy controls the ability to discriminate graded intensities of facial expressions of anger from neutral expressions and the ability to discriminate radial frequency (RF) patterns with modulations in amplitude from a perfect circle. Those with PD were, as a group, impaired relative to controls in discriminating graded intensities of angry from neutral expressions and discriminating modulated amplitudes of RF patterns from perfect circles; these two abilities correlated positively and moderately to highly, even after removing the variance that was shared with disease progression and general cognitive functioning. The results indicate that the impaired ability to perceive visual form is likely to contribute to the impaired ability to perceive facial expressions of emotion in PD, and that both are related to the progression of the disease.
ISSN:0022-510X
1878-5883
DOI:10.1016/j.jns.2014.08.014