Publication date: Available online 20 February 2017
Source:Journal of Neuroscience Methods
Author(s): Andrea Bandini, Silvia Orlandi, Hugo Jair Escalante, Fabio Giovannelli, Massimo Cincotta, Carlos A. Reyes-Garcia, Paola Vanni, Gaetano Zaccara, Claudia Manfredi
BackgroundThe automatic analysis of facial expressions is an evolving field that finds several clinical applications. One of these applications is the study of facial bradykinesia in Parkinson's disease (PD), which is a major motor sign of this neurodegenerative illness. Facial bradykinesia consists in the reduction/loss of facial movements and emotional facial expressions called hypomimia.New MethodIn this work we propose an automatic method for studying facial expressions in PD patients relying on video-basedmethods17 Parkinsonian patients and 17 healthy control subjects were asked to show basic facial expressions, upon request of the clinician and after the imitation of a visual cue on a screen. Through an existing face tracker, the Euclidean distance of the facial model from a neutral baseline was computed in order to quantify the changes in facial expressivity during the tasks. Moreover, an automatic facial expressions recognition algorithm was trained in order to study how PD expressions differed from the standard expressions.ResultsResults show that control subjects reported on average higher distances than PD patients along the tasks.Comparison with Existing MethodsThis confirms that control subjects show larger movements during both posed and imitated facial expressions. Moreover, our results demonstrate that anger and disgust are the two most impaired expressions in PD patients.ConclusionsContactless video-based systems can be important techniques for analyzing facial expressions also in rehabilitation, in particular speech therapy, where patients could get a definite advantage from a real-time feedback about the proper facial expressions/movements to perform.
http://ift.tt/2lGZGco
Σφακιανάκης Αλέξανδρος
ΩτοΡινοΛαρυγγολόγος
Αναπαύσεως 5 Άγιος Νικόλαος
Κρήτη 72100
00302841026182
00306932607174
alsfakia@gmail.com
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- Pepsin as a biomarker for laryngopharyngeal reflux...
- Clinical effect of intratympanic dexamethasone inj...
- The current status of human laryngeal transplantat...
- Customized software to optimize circumferential ph...
- Clinical effect of intratympanic dexamethasone inj...
- Laboratory assessment of sudden sensorineural hear...
- Customized software to optimize circumferential ph...
- Quality of life of patients who underwent aestheti...
- Laboratory assessment of sudden sensorineural hear...
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- Quality of life of patients who underwent aestheti...
- The repeatability of tests of eustachian tube func...
- Compound motor action potential duration and laten...
- Impacts of disease severity on postoperative compl...
- The repeatability of tests of eustachian tube func...
- Intranasal trigeminal function in patients with em...
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- Intranasal trigeminal function in patients with em...
- Can contaminated water be rendered safe for nasal ...
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- Can the burden of disease due to food allergy be p...
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- A randomized study of BI 671800, a CRTH2 antagonis...
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- Response to inhaled corticosteroids on serum CD28,...
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