Postural inflexibility in parkinsonian subjects
In order to identify the types of postural deficits seen in parkinsonian patients with postural instability, we compared the performance of parkinsonian subjects with young and old control subjects in 3 aspects of postural control: (1) the use of sensory information for postural orientation, (2) the...
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| Veröffentlicht in: | Journal of the neurological sciences 1992-08, Vol.111 (1), p.46-58 |
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| container_title | Journal of the neurological sciences |
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| creator | Horak, F.B. Nutt, J.G. Nashner, L.M. |
| description | In order to identify the types of postural deficits seen in parkinsonian patients with postural instability, we compared the performance of parkinsonian subjects with young and old control subjects in 3 aspects of postural control: (1) the use of sensory information for postural orientation, (2) the coordination of postural movement patterns in response to surface displacements, and (3) the flexible modification of postural response patterns to changes in support conditions. Parkinsonian subjects had very small sway, even under altered sensory conditions. Postural response latencies to displacements were also normal. Postural instability was associated with abnormal patterns of postural responses including excessive antagonist activity and inflexibility in adapting to changing support conditions. Some parkinsonian subjects appeared to have difficulty sequencing motor programs for postural correction. The parkinsonian subjects appeared stiffer since the rate-of-change of sway in response to displacements was reduced. Levodopa improved postural coordination but not the flexible adaptation to changing support conditions. |
| doi_str_mv | 10.1016/0022-510X(92)90111-W |
| format | Article |
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Parkinsonian subjects had very small sway, even under altered sensory conditions. Postural response latencies to displacements were also normal. Postural instability was associated with abnormal patterns of postural responses including excessive antagonist activity and inflexibility in adapting to changing support conditions. Some parkinsonian subjects appeared to have difficulty sequencing motor programs for postural correction. The parkinsonian subjects appeared stiffer since the rate-of-change of sway in response to displacements was reduced. 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Parkinsonian subjects had very small sway, even under altered sensory conditions. Postural response latencies to displacements were also normal. Postural instability was associated with abnormal patterns of postural responses including excessive antagonist activity and inflexibility in adapting to changing support conditions. Some parkinsonian subjects appeared to have difficulty sequencing motor programs for postural correction. The parkinsonian subjects appeared stiffer since the rate-of-change of sway in response to displacements was reduced. Levodopa improved postural coordination but not the flexible adaptation to changing support conditions.</description><subject>Adult</subject><subject>Aged</subject><subject>Aged, 80 and over</subject><subject>Aging - physiology</subject><subject>Biological and medical sciences</subject><subject>Degenerative and inherited degenerative diseases of the nervous system. Leukodystrophies. Prion diseases</subject><subject>Electromyography</subject><subject>EMG</subject><subject>Female</subject><subject>Humans</subject><subject>Levodopa</subject><subject>Levodopa - therapeutic use</subject><subject>Male</subject><subject>Medical sciences</subject><subject>Middle Aged</subject><subject>Muscles - physiopathology</subject><subject>Neurology</subject><subject>Parkinson Disease - drug therapy</subject><subject>Parkinson Disease - physiopathology</subject><subject>Parkinsonism</subject><subject>Postural Balance - drug effects</subject><subject>Posture</subject><subject>Posture - physiology</subject><subject>Reflex - physiology</subject><subject>Sensory information</subject><subject>Space life sciences</subject><issn>0022-510X</issn><issn>1878-5883</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1992</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kE1LAzEQhoMotVb_gUIPInpYO8luvi6CFL-goAel3kJ2N4HU7W5NdsX-e1O31JunYZjnHWYehE4xXGPAbAJASEIxvF9KciUBY5zM99AQCy4SKkS6j4Y75BAdhbAAACaEHKABzoBIyYdo8tKEtvO6GrvaVubb5a5y7Tp245X2H64OTe10PQ5dvjBFG47RgdVVMCfbOkJv93ev08dk9vzwNL2dJUWW8jYpJSNcAEsl47SETGIgHGsmBQGWWQuWxVtoyqjBHBNhNZd5JrmmNjNYknSELvq9K998dia0aulCYapK16bpguIpSSmkIoJZDxa-CcEbq1beLbVfKwxq40ltJKiNBCWJ-vWk5jF2tt3f5UtT_oV6MXF-vp3rUOjKel0XLuwwSoHFjyJ202MmuvhyxqtQOFMXpnQ-6lJl4_6_4wfSRYHY</recordid><startdate>19920801</startdate><enddate>19920801</enddate><creator>Horak, F.B.</creator><creator>Nutt, J.G.</creator><creator>Nashner, L.M.</creator><general>Elsevier B.V</general><general>Elsevier Science</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>19920801</creationdate><title>Postural inflexibility in parkinsonian subjects</title><author>Horak, F.B. ; Nutt, J.G. ; Nashner, L.M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c437t-d962780639675d04910271a6982064ff0f60065365e17128fa79b497a5f4e1923</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1992</creationdate><topic>Adult</topic><topic>Aged</topic><topic>Aged, 80 and over</topic><topic>Aging - physiology</topic><topic>Biological and medical sciences</topic><topic>Degenerative and inherited degenerative diseases of the nervous system. Leukodystrophies. Prion diseases</topic><topic>Electromyography</topic><topic>EMG</topic><topic>Female</topic><topic>Humans</topic><topic>Levodopa</topic><topic>Levodopa - therapeutic use</topic><topic>Male</topic><topic>Medical sciences</topic><topic>Middle Aged</topic><topic>Muscles - physiopathology</topic><topic>Neurology</topic><topic>Parkinson Disease - drug therapy</topic><topic>Parkinson Disease - physiopathology</topic><topic>Parkinsonism</topic><topic>Postural Balance - drug effects</topic><topic>Posture</topic><topic>Posture - physiology</topic><topic>Reflex - physiology</topic><topic>Sensory information</topic><topic>Space life sciences</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Horak, F.B.</creatorcontrib><creatorcontrib>Nutt, J.G.</creatorcontrib><creatorcontrib>Nashner, L.M.</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of the neurological sciences</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Horak, F.B.</au><au>Nutt, J.G.</au><au>Nashner, L.M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Postural inflexibility in parkinsonian subjects</atitle><jtitle>Journal of the neurological sciences</jtitle><addtitle>J Neurol Sci</addtitle><date>1992-08-01</date><risdate>1992</risdate><volume>111</volume><issue>1</issue><spage>46</spage><epage>58</epage><pages>46-58</pages><issn>0022-510X</issn><eissn>1878-5883</eissn><coden>JNSCAG</coden><abstract>In order to identify the types of postural deficits seen in parkinsonian patients with postural instability, we compared the performance of parkinsonian subjects with young and old control subjects in 3 aspects of postural control: (1) the use of sensory information for postural orientation, (2) the coordination of postural movement patterns in response to surface displacements, and (3) the flexible modification of postural response patterns to changes in support conditions. Parkinsonian subjects had very small sway, even under altered sensory conditions. Postural response latencies to displacements were also normal. Postural instability was associated with abnormal patterns of postural responses including excessive antagonist activity and inflexibility in adapting to changing support conditions. Some parkinsonian subjects appeared to have difficulty sequencing motor programs for postural correction. The parkinsonian subjects appeared stiffer since the rate-of-change of sway in response to displacements was reduced. Levodopa improved postural coordination but not the flexible adaptation to changing support conditions.</abstract><cop>Shannon</cop><pub>Elsevier B.V</pub><pmid>1402997</pmid><doi>10.1016/0022-510X(92)90111-W</doi><tpages>13</tpages></addata></record> |
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| subjects | Adult Aged Aged, 80 and over Aging - physiology Biological and medical sciences Degenerative and inherited degenerative diseases of the nervous system. Leukodystrophies. Prion diseases Electromyography EMG Female Humans Levodopa Levodopa - therapeutic use Male Medical sciences Middle Aged Muscles - physiopathology Neurology Parkinson Disease - drug therapy Parkinson Disease - physiopathology Parkinsonism Postural Balance - drug effects Posture Posture - physiology Reflex - physiology Sensory information Space life sciences |
| title | Postural inflexibility in parkinsonian subjects |
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