scholarly journals A Study on the Possible Diagnosis of Parkinson’s Disease on the Basis of Facial Image Analysis

Electronics ◽  
2021 ◽  
Vol 10 (22) ◽  
pp. 2832
Author(s):  
Jacek Jakubowski ◽  
Anna Potulska-Chromik ◽  
Kamila Białek ◽  
Monika Nojszewska ◽  
Anna Kostera-Pruszczyk
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Recognition System ◽  
Medical Studies ◽  
Convolutional Network ◽  
Statistical Measures ◽  
A Value ◽  
The Face ◽  
Expression Of Emotions ◽  
Facial Image Analysis

One of the symptoms of Parkinson’s disease is the occurrence of problems with the expression of emotions on the face, called facial masking, facial bradykinesia or hypomimia. Recent medical studies show that this symptom can be used in the diagnosis of this disease. In the presented study, the authors, on the basis of their own research, try to answer the question of whether it is possible to build an automatic Parkinson’s disease recognition system based on the face image. The research used image recordings in the field of visible light and infrared. The material for the study consisted of registrations in a group of patients with Parkinson’s disease and a group of healthy patients. The patients were asked to express a neutral facial expression and a smile. In the detection, both geometric and holistic methods based on the use of convolutional network and image fusion were used. The obtained results were assessed quantitatively using statistical measures, including F1score, which was a value of 0.941. The results were compared with a competitive work on the same subject. A novelty of our experiments is that patients with Parkinson’s disease were in the so-called ON phase, in which, due to the action of drugs, the symptoms of the disease are reduced. The results obtained seem to be useful in the process of early diagnosis of this disease, especially in times of remote medical examination.

scholarly journals Introducing the Parkinson’s KinetiGraph into Routine Parkinson’s Disease Care: A 3-Year Single Centre Experience

2020 ◽  
Vol 10 (4) ◽  
pp. 1827-1832
Author(s):  
Thea Dominey ◽  
Angie A. Kehagia ◽  
Terry Gorst ◽  
Emma Pearson ◽  
Fiona Murphy ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Unmet Need ◽  
Resource Limitation ◽  
Digital Data ◽  
Continuous Measure ◽  
Remote Management ◽  
Single Centre Experience ◽  
The Face ◽  
Increasing Demand

In an effort to provide timely clinical input for people with Parkinson’s disease (PD) in the face of increasing demand and resource limitation in our UK based service, we introduced remote management in place of clinic appointment, including the use of the Parkinson’s KinetiGraph (PKG™), a wrist-worn device that provides a continuous measure of movement. We evaluated our reporting methods and findings, the nature of unmet need we identified, our treatment recommendations and the degree of their implementation in our patients whose feedback guided our service developments. Our evaluation highlighted opportunities and challenges associated with incorporating digital data into care traditionally delivered via in-person contact.

scholarly journals Feature Selection Based on L1-Norm Support Vector Machine and Effective Recognition System for Parkinson’s Disease Using Voice Recordings

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 37718-37734 ◽  
Author(s):  
Amin Ul Haq ◽  
Jian Ping Li ◽  
Muhammad Hammad Memon ◽  
Jalaluddin khan ◽  
Asad Malik ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Support Vector Machine ◽  
Parkinson's Disease ◽  
Feature Selection ◽  
Recognition System ◽  
Support Vector ◽  
L1 Norm

Recognition of emotions expressed on the face impairments in Parkinson’s disease

2020 ◽  
Author(s):  
Kaveh Shafiei ◽  
Mohammad Ali Shafa ◽  
Forugh Mohammadi ◽  
Ali Arabpour
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Emotion Recognition ◽  
Cross Sectional Study ◽  
Primary Objective ◽  
Cross Sectional ◽  
Complex Process ◽  
The Face ◽  
The Mean ◽  
Multimodal Emotion Recognition

Background: Facial emotion recognition (FER) is a complex process, involving many brain circuits, including the basal ganglia that its motor involvement causes Parkinson's disease (PD). The previous studies used different tools for assessment of FER in PD. There is a discrepancy between the results of these studies due to different tools. In this study, we used a modified version of the Multimodal Emotion Recognition Test (MERT) to compare patients with PD to healthy controls (HCs). Methods: It was a cross-sectional study with primary objective of the mean percentage of the correct answers in MERT. Subjects had to name the emotions presented with different modalities. Results: 30 subjects were recruited and assessed in each group. The mean total MERT score was significantly lower in subjects with PD compared to HCs (35.0% vs. 44.5%). FER was significantly better when emotions were presented by video and worse when presented by still pictures. Both subjects with PD and HCs had lower MERT scores in recognizing negative emotions. There was no significant correlation between the duration and severity of PD and MERT score. Conclusion: Our study provided more pieces of evidence for impairment of FER in PD for recognizing emotions like sadness, disgust, and fear compared to happy expressions.

scholarly journals Effect of Visual Cues on the Resolution of Perceptual Ambiguity in Parkinson’s Disease and Normal Aging

2015 ◽  
Vol 21 (2) ◽  
pp. 146-155 ◽  
Author(s):  
Mirella Díaz-Santos ◽  
Bo Cao ◽  
Samantha A. Mauro ◽  
Arash Yazdanbakhsh ◽  
Sandy Neargarder ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Visual Cues ◽  
Necker Cube ◽  
Normal Aging ◽  
Volitional Control ◽  
Bistable Perception ◽  
Task Instructions ◽  
Passive Viewing ◽  
The Face

AbstractParkinson’s disease (PD) and normal aging have been associated with changes in visual perception, including reliance on external cues to guide behavior. This raises the question of the extent to which these groups use visual cues when disambiguating information. Twenty-seven individuals with PD, 23 normal control adults (NC), and 20 younger adults (YA) were presented a Necker cube in which one face was highlighted by thickening the lines defining the face. The hypothesis was that the visual cues would help PD and NC to exert better control over bistable perception. There were three conditions, including passive viewing and two volitional-control conditions (hold one percept in front; and switch: speed up the alternation between the two). In the Hold condition, the cue was either consistent or inconsistent with task instructions. Mean dominance durations (time spent on each percept) under passive viewing were comparable in PD and NC, and shorter in YA. PD and YA increased dominance durations in the Hold cue-consistent condition relative to NC, meaning that appropriate cues helped PD but not NC hold one perceptual interpretation. By contrast, in the Switch condition, NC and YA decreased dominance durations relative to PD, meaning that the use of cues helped NC but not PD in expediting the switch between percepts. Provision of low-level cues has effects on volitional control in PD that are different from in normal aging, and only under task-specific conditions does the use of such cues facilitate the resolution of perceptual ambiguity. (JINS, 2015, 21, 146–155)

scholarly journals Dopamine replacement remediates risk aversion in Parkinson’s disease in a value-independent manner

2019 ◽  
Author(s):  
Mariya V. Cherkasova ◽  
Jeffrey C. Corrow ◽  
Alisdair Taylor ◽  
Shanna C. Yeung ◽  
Jacob L. Stubbs ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Risk Aversion ◽  
Risk Tolerance ◽  
Independent Manner ◽  
A Value ◽  
Wide Range ◽  
Reward Value ◽  
Expected Values ◽  
Gain Frame

ABSTRACTIntroductionClinical evidence suggests that Parkinson’s Disease (PD) patients are risk averse. Dopaminergic therapy has been reported to increase risk tolerance, but the underlying mechanisms are unclear. Some studies have suggested an amplification of subjective reward value, consistent with the role of dopamine in reward value coding. Others have reported value-independent risk enhancement. We evaluated the value-dependence of the effects of PD and its therapy on risk using tasks designed to sensitively measure risk over a wide range of expected values.Method36 patients with idiopathic PD receiving levodopa monotherapy and 36 healthy matched controls performed two behavioural economic tasks aimed at quantifying 1) risk tolerance/ aversion in the gain frame and 2) valuation of potential gains relative to losses. PD patients performed the tasks on and off their usual dose of levodopa in randomized order; controls performed the same tasks twice.ResultsRelative to the controls, unmedicated PD patients showed significant value-independent risk aversion in the gain frame, which was normalized by levodopa. PD patients did not differ from controls in their valuation of gains relative to losses. However, across both tasks and regardless of medication, choices of the patients were more determined by expected values of the prospects than those of controls.ConclusionDopamine deficiency in PD was associated with risk aversion, and levodopa promoted riskier choice in a value-independent manner. PD patients also showed an increased sensitivity to expected value, which was independent of levodopa and does not appear to result directly from dopamine deficiency.

The performance of patients with Parkinson’s disease on the Face-Name Associative Memory Examination

2018 ◽  
Vol 40 (2) ◽  
pp. 405-407 ◽  
Author(s):  
Constantinos Kormas ◽  
Ioannis Zalonis ◽  
Ioannis Evdokimidis ◽  
Constantin Potagas
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Associative Memory ◽  
The Face
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