The measurement of visual sampling during real-world activity in Parkinson's disease and healthy controls: A structured literature review

Stuart, Samuel; Alcock, Lisa; Galna, Brook; Lord, Sue; Rochester, Lynn

doi:10.1016/j.jneumeth.2013.11.018

Cited by 35 publications

(46 citation statements)

References 85 publications

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“…Impaired visual function has been well described in Parkinson’s disease but its impact on movement is less clear [42-47]. The visual difficulties observed in this study are interesting for two reasons.…”

Section: Discussionmentioning

confidence: 75%

Retraining function in people with Parkinson’s disease using the Microsoft kinect: game design and pilot testing

Galna

Jackson

Schofield

et al. 2014

J NeuroEngineering Rehabil

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126

104

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BackgroundComputer based gaming systems, such as the Microsoft Kinect (Kinect), can facilitate complex task practice, enhance sensory feedback and action observation in novel, relevant and motivating modes of exercise which can be difficult to achieve with standard physiotherapy for people with Parkinson’s disease (PD). However, there is a current need for safe, feasible and effective exercise games that are appropriate for PD rehabilitation. The aims of this study were to i) develop a computer game to rehabilitate dynamic postural control for people with PD using the Kinect; and ii) pilot test the game’s safety and feasibility in a group of people with PD.MethodsA rehabilitation game aimed at training dynamic postural control was developed through an iterative process with input from a design workshop of people with PD. The game trains dynamic postural control through multi-directional reaching and stepping tasks, with increasing complexity across 12 levels of difficulty. Nine people with PD pilot tested the game for one session. Participant feedback to identify issues relating to safety and feasibility were collected using semi-structured interviews.ResultsParticipants reported that they felt safe whilst playing the game. In addition, there were no adverse events whilst playing. In general, the participants stated that they enjoyed the game and seven of the nine participants said they could imagine themselves using the game at home, especially if they felt it would improve their balance. The Flow State Scale indicated participants were immersed in the gameplay and enjoyed the experience. However, some participants reported that they found it difficult to discriminate between different types and orientations of visual objects in the game and some also had difficulty with the stepping tasks, especially when performed at the same time as the reaching tasks.ConclusionComputer-based rehabilitation games using the Kinect are safe and feasible for people with PD although intervention trials are needed to test their safety, feasibility and efficacy in the home.

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Section: Discussionmentioning

confidence: 75%

Retraining function in people with Parkinson’s disease using the Microsoft kinect: game design and pilot testing

Galna

Jackson

Schofield

et al. 2014

J NeuroEngineering Rehabil

Self Cite

126

104

View full text Add to dashboard Cite

show abstract

“…Visual deficits have been suggested as a premotor marker for PD patients. Clinical observations and animal model studies have provided evidence that PD patients have color discrimination dysfunction (Bodis‐Wollner, ; Stuart et al, ), which may be a disease‐specific feature of PD (Piro et al, ). Visual deficits are a risk factor for developing visual hallucination (VH; Matsui et al, ).…”

Section: Clinical Featuresmentioning

confidence: 99%

“…Clinical observations and animal model studies provide evidence that visual dysfunction, in general, tends to manifest at an early stage in PD (Chaudhuri et al, ; Bodis‐Wollner, ). The visual processing extends from the retinal to the ventral temporal lobe, which is also modified by top‐down as well as bottom‐up processing (Willis, ; Stuart et al, ). Botha and Carr () reported that complex visual hallucinations can affect temporal lobe structures that are modulated by dopamine.…”

Section: Pathophysiological Mechanismsmentioning

confidence: 99%

Sensory symptoms in Parkinson's disease: Clinical features, pathophysiology, and treatment

Zhu

et al. 2016

J of Neuroscience Research

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Parkinson's disease (PD) is one of the most common forms of neurodegenerative disease in the elderly population and is typically manifested by motor symptoms and nonmotor symptoms and signs. Nonmotor symptoms, such as sensory symptoms, have been regarded as the significant features of this disease. These symptoms often occur in early stages of PD and influence quality of life. However, researchers suggest that the sensory symptoms of PD are frequently unrecognized by clinicians and remain untreated. The disorders include pain, olfactory disturbance, and visual dysfunction input on the underlying sensory abnormality. This Review focuses on the clinical features, pathophysiological mechanisms, and treatment strategies for sensory symptoms of PD from both clinical studies and basic research, providing a comprehensive overview of the sensory symptoms in PD. © 2016 Wiley Periodicals, Inc.

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“…However, until recently almost all previous research was conducted in restricted static conditions and involved simple tasks such as button pressing [12]. These studies provide information about the mechanisms behind eye movement characteristics and allow for experimental manipulation, but results may not be relevant to real-world activities that involve multiple motor, cognitive and visual processes.…”

Section: B Focusmentioning

confidence: 99%

“…The Dikablis and EOG (sampling at 1000Hz) were synchronized using a 3D motion capture system (Vicon, Oxford, UK). Importantly for this study the 50Hz sampling rate of the Dikablis is adequate for the detection of saccades, although it may not be able to provide precise information on saccade durations or peak velocity as these features require higher sampling frequencies (>200Hz) [11][12][13].…”

Section: B Equipmentmentioning

confidence: 99%

Quantifying saccades while walking: Validity of a novel velocity-based algorithm for mobile eye tracking

Stuart

Galna

Lord

et al. 2014

2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society

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We validate a novel algorithm to detect saccades from raw data obtained during walking from a mobile infra-red eye-tracking device. The algorithm was based on a velocity threshold detection method, which excluded artefacts such as blinks and flickers using specific criteria. Mobile infra-red eye-tracking was performed with a group of healthy older adults (n=5) and Parkinson's disease (n=5) subjects. Saccades determined from raw eye tracker data obtained during walking using the algorithm were compared to a ground truth dataset defined as frame-by-frame visual inspection of raw eye-tracking videos. 100 trials from 10 subjects were analyzed and compared. The algorithm was highly reliable when compared to the ground truth (ICC(2,1) = 0.94), with an overall correct saccade detection percentage of 85%. This provides a simple yet robust algorithm for the analysis of mobile eye-tracking data.

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The measurement of visual sampling during real-world activity in Parkinson's disease and healthy controls: A structured literature review

Cited by 35 publications

References 85 publications

Retraining function in people with Parkinson’s disease using the Microsoft kinect: game design and pilot testing

Retraining function in people with Parkinson’s disease using the Microsoft kinect: game design and pilot testing

Sensory symptoms in Parkinson's disease: Clinical features, pathophysiology, and treatment

Quantifying saccades while walking: Validity of a novel velocity-based algorithm for mobile eye tracking

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