The contribution of optic flow to freezing of gait in left- and right-PD: different mechanisms for a common phenomenon?
Identifieur interne : 000C52 ( Main/Exploration ); précédent : 000C51; suivant : 000C53The contribution of optic flow to freezing of gait in left- and right-PD: different mechanisms for a common phenomenon?
Auteurs : Kaylena A. Ehgoetz Martens [Canada] ; Frederico Pieruccini-Faria ; Carolina R A. Silveira ; Quincy J. AlmeidaSource :
- Parkinsonism & related disorders [ 1873-5126 ] ; 2013.
English descriptors
- KwdEn :
- Aged, Aged, 80 and over, Female, Gait Disorders, Neurologic (diagnosis), Gait Disorders, Neurologic (epidemiology), Gait Disorders, Neurologic (physiopathology), Humans, Male, Optic Flow (physiology), Parkinson Disease (diagnosis), Parkinson Disease (epidemiology), Parkinson Disease (physiopathology).
- MESH :
- diagnosis : Gait Disorders, Neurologic, Parkinson Disease.
- epidemiology : Gait Disorders, Neurologic, Parkinson Disease.
- physiology : Optic Flow.
- physiopathology : Gait Disorders, Neurologic, Parkinson Disease.
- Aged, Aged, 80 and over, Female, Humans, Male.
Abstract
It has been recently hypothesized that impaired processing of optic flow may be related to FOG, especially in PD patients with left-side symptomatology (LPD). The current preliminary study examined the frequency of FOG episodes in LPD and RPD while the availability of optic flow was manipulated during gait. Twelve patients (6 FOG-L, 6 FOG-R) completed walking trials in two conditions (optic flow or no optic flow). Results revealed that FOG frequency was similar between groups when optic flow was not available, however, optic flow provided by walking toward an illuminated doorframe, lead to a three-fold increase in FOG episodes in only the LPD (compared to RPD). These findings suggest that LPD might have deficits in perceiving or processing optic flow when passing through doorways. Thus, it is important to consider how sensory processing mechanisms may contribute to severe gait disturbances such as FOG.
DOI: 10.1016/j.parkreldis.2013.06.011
PubMed: 23891343
Affiliations:
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Ehgoetz Martens</name><affiliation wicri:level="1"><nlm:affiliation>Sun Life Financial Movement Disorders Research and Rehabilitation Centre, Wilfrid Laurier University, 75 University Avenue West, Waterloo, Ontario N2L 3C5, Canada; University of Waterloo, Department of Psychology, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Sun Life Financial Movement Disorders Research and Rehabilitation Centre, Wilfrid Laurier University, 75 University Avenue West, Waterloo, Ontario N2L 3C5, Canada; University of Waterloo, Department of Psychology</wicri:regionArea><wicri:noRegion>Department of Psychology</wicri:noRegion></affiliation></author><author><name sortKey="Pieruccini Faria, Frederico" sort="Pieruccini Faria, Frederico" uniqKey="Pieruccini Faria F" first="Frederico" last="Pieruccini-Faria">Frederico Pieruccini-Faria</name></author><author><name sortKey="Silveira, Carolina R A" sort="Silveira, Carolina R A" uniqKey="Silveira C" first="Carolina R A" last="Silveira">Carolina R A. Silveira</name></author><author><name sortKey="Almeida, Quincy J" sort="Almeida, Quincy J" uniqKey="Almeida Q" first="Quincy J" last="Almeida">Quincy J. 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Ehgoetz Martens</name><affiliation wicri:level="1"><nlm:affiliation>Sun Life Financial Movement Disorders Research and Rehabilitation Centre, Wilfrid Laurier University, 75 University Avenue West, Waterloo, Ontario N2L 3C5, Canada; University of Waterloo, Department of Psychology, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Sun Life Financial Movement Disorders Research and Rehabilitation Centre, Wilfrid Laurier University, 75 University Avenue West, Waterloo, Ontario N2L 3C5, Canada; University of Waterloo, Department of Psychology</wicri:regionArea><wicri:noRegion>Department of Psychology</wicri:noRegion></affiliation></author><author><name sortKey="Pieruccini Faria, Frederico" sort="Pieruccini Faria, Frederico" uniqKey="Pieruccini Faria F" first="Frederico" last="Pieruccini-Faria">Frederico Pieruccini-Faria</name></author><author><name sortKey="Silveira, Carolina R A" sort="Silveira, Carolina R A" uniqKey="Silveira C" first="Carolina R A" last="Silveira">Carolina R A. Silveira</name></author><author><name sortKey="Almeida, Quincy J" sort="Almeida, Quincy J" uniqKey="Almeida Q" first="Quincy J" last="Almeida">Quincy J. Almeida</name></author></analytic><series><title level="j">Parkinsonism & related disorders</title><idno type="eISSN">1873-5126</idno><imprint><date when="2013" type="published">2013</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aged</term><term>Aged, 80 and over</term><term>Female</term><term>Gait Disorders, Neurologic (diagnosis)</term><term>Gait Disorders, Neurologic (epidemiology)</term><term>Gait Disorders, Neurologic (physiopathology)</term><term>Humans</term><term>Male</term><term>Optic Flow (physiology)</term><term>Parkinson Disease (diagnosis)</term><term>Parkinson Disease (epidemiology)</term><term>Parkinson Disease (physiopathology)</term></keywords><keywords scheme="MESH" qualifier="diagnosis" xml:lang="en"><term>Gait Disorders, Neurologic</term><term>Parkinson Disease</term></keywords><keywords scheme="MESH" qualifier="epidemiology" xml:lang="en"><term>Gait Disorders, Neurologic</term><term>Parkinson Disease</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Optic Flow</term></keywords><keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Gait Disorders, Neurologic</term><term>Parkinson Disease</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Aged</term><term>Aged, 80 and over</term><term>Female</term><term>Humans</term><term>Male</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">It has been recently hypothesized that impaired processing of optic flow may be related to FOG, especially in PD patients with left-side symptomatology (LPD). The current preliminary study examined the frequency of FOG episodes in LPD and RPD while the availability of optic flow was manipulated during gait. Twelve patients (6 FOG-L, 6 FOG-R) completed walking trials in two conditions (optic flow or no optic flow). Results revealed that FOG frequency was similar between groups when optic flow was not available, however, optic flow provided by walking toward an illuminated doorframe, lead to a three-fold increase in FOG episodes in only the LPD (compared to RPD). These findings suggest that LPD might have deficits in perceiving or processing optic flow when passing through doorways. Thus, it is important to consider how sensory processing mechanisms may contribute to severe gait disturbances such as FOG.</div></front></TEI><affiliations><list><country><li>Canada</li></country></list><tree><noCountry><name sortKey="Almeida, Quincy J" sort="Almeida, Quincy J" uniqKey="Almeida Q" first="Quincy J" last="Almeida">Quincy J. Almeida</name><name sortKey="Pieruccini Faria, Frederico" sort="Pieruccini Faria, Frederico" uniqKey="Pieruccini Faria F" first="Frederico" last="Pieruccini-Faria">Frederico Pieruccini-Faria</name><name sortKey="Silveira, Carolina R A" sort="Silveira, Carolina R A" uniqKey="Silveira C" first="Carolina R A" last="Silveira">Carolina R A. Silveira</name></noCountry><country name="Canada"><noRegion><name sortKey="Ehgoetz Martens, Kaylena A" sort="Ehgoetz Martens, Kaylena A" uniqKey="Ehgoetz Martens K" first="Kaylena A" last="Ehgoetz Martens">Kaylena A. Ehgoetz Martens</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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