2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society 2012
DOI: 10.1109/embc.2012.6347005
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The effect of visual cues on the number and duration of freezing episodes in Parkinson's patients

Abstract: Freezing of gait is a phenomenon common in Parkinson's patients and significantly affects quality of life. Sensory cues have been known to improve walking performance and reduce freezing of gait. Visual cues are reported to be particularly effective for this purpose. So far, sensory cues have generally been provided continuously, even when currently not needed. However, a recent approach suggests the provision of cues just in the case that freezing actually occurs. The arguments in favor of this "on-demand" cu… Show more

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Cited by 30 publications
(24 citation statements)
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“…12 Indeed, the failure to recruit medial motor and medial frontal regions in the PD+FOG group during turning could indicate a difficulty with facilitating internally driven motor actions when visual support falls away. 47 This notion is supported by the fact that externally driven motor actions, such as achieved through visual cueing techniques can alleviate freezing of gait, 48 whereas turning is the most provocative trigger for freezing of gait. 27 Future studies are now needed to confirm saccadic dysfunctions during turning in the VR and to determine whether dopaminergic medication improves the basal ganglia circuitry during turning and thus visuomotor integration.…”
Section: Discussionmentioning
confidence: 99%
“…12 Indeed, the failure to recruit medial motor and medial frontal regions in the PD+FOG group during turning could indicate a difficulty with facilitating internally driven motor actions when visual support falls away. 47 This notion is supported by the fact that externally driven motor actions, such as achieved through visual cueing techniques can alleviate freezing of gait, 48 whereas turning is the most provocative trigger for freezing of gait. 27 Future studies are now needed to confirm saccadic dysfunctions during turning in the VR and to determine whether dopaminergic medication improves the basal ganglia circuitry during turning and thus visuomotor integration.…”
Section: Discussionmentioning
confidence: 99%
“…This might influence the sense of self-motion, thereby affecting motor planning and potentially contributing to the occurrence of FOG (45). However, currently used visual cues such as bars on the floor or laser lights (4648) are predominantly presented in the central visual field, while an enhanced peripheral optic flow delivered via Google Glass did not reduce FOG (12). Fifth, dopaminergic medication levels at the end-of-dose might have interfered with the effects of cueing.…”
Section: Discussionmentioning
confidence: 98%
“…These gait impairments can be controlled by visual stimuli such as placing vinyl tape and sticks on the floor, e.g., [31]. Our system projects a colored line that imitates vinyl tape (Figure 2 (b)) or a stick placed on the floor so that the Parkinson's gait disorder can be alleviated on demand.…”
Section: Application Scenariosmentioning
confidence: 99%