Imitation in Patients with Gilles de la Tourette Syndrome: A Behavioral Study
Identifieur interne : 002255 ( PascalFrancis/Curation ); précédent : 002254; suivant : 002256Imitation in Patients with Gilles de la Tourette Syndrome: A Behavioral Study
Auteurs : Melanie Jonas [Allemagne] ; Götz Thomalla [Allemagne] ; Katja Biermann-Ruben [Allemagne] ; Hartwig Roman Siebner [Danemark, Allemagne] ; Kirsten Müller-Vahl [Allemagne] ; Tobias B Umer [Allemagne] ; Christian Gerloff [Allemagne] ; Alfons Schnitzler [Allemagne] ; Michael Orth [Allemagne] ; Alexander Münchau [Allemagne]Source :
- Movement disorders [ 0885-3185 ] ; 2010.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Homme.
English descriptors
Abstract
Echophenomena in Gilles de la Tourette syndrome (GTS) may relate to deficient processing of observed biological movements. This would be reflected in altered effects of movement observation on motor responses in these patients. We studied reaction times in 11 unmedicated GTS patients without psychiatric comorbidity and healthy subjects. In experiment 1, participants imitated single biological finger movement stimuli or nonbiological dot movement stimuli immediately. In experiment 2, participants responded to a tone while viewing biological or nonbiological movement stimuli that were either compatible (identical) or incompatible (different) with their response. In experiment 1, both patients and healthy subjects responded faster to single biological than to nonbiological stimuli. In experiment 2, biological stimuli caused a larger compatibility-effect in responses than nonbiological stimuli in both groups, provided stimulus presentation and response initiation coincided. Healthy subjects responded faster to compatible biological than nonbiological stimuli. In contrast, GTS patients responded slower to incompatible biological than nonbiological stimuli. Patients' mean reaction time in experiment 2 correlated with phonic tic-frequency. Motor facilitation by observing biological movements appears to rely on concomitance of stimuli and responses in GTS patients and healthy individuals. Differing behavioral effects of movement observation in GTS might reflect altered activation of an action observation-execution matching system. To avoid unwanted movements GTS patients probably have to inhibit motor activation induced by observed movement automatically. Thus, movement stimuli may facilitate similar motor responses less but interfere more with different responses in these patients.
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<front><div type="abstract" xml:lang="en">Echophenomena in Gilles de la Tourette syndrome (GTS) may relate to deficient processing of observed biological movements. This would be reflected in altered effects of movement observation on motor responses in these patients. We studied reaction times in 11 unmedicated GTS patients without psychiatric comorbidity and healthy subjects. In experiment 1, participants imitated single biological finger movement stimuli or nonbiological dot movement stimuli immediately. In experiment 2, participants responded to a tone while viewing biological or nonbiological movement stimuli that were either compatible (identical) or incompatible (different) with their response. In experiment 1, both patients and healthy subjects responded faster to single biological than to nonbiological stimuli. In experiment 2, biological stimuli caused a larger compatibility-effect in responses than nonbiological stimuli in both groups, provided stimulus presentation and response initiation coincided. Healthy subjects responded faster to compatible biological than nonbiological stimuli. In contrast, GTS patients responded slower to incompatible biological than nonbiological stimuli. Patients' mean reaction time in experiment 2 correlated with phonic tic-frequency. Motor facilitation by observing biological movements appears to rely on concomitance of stimuli and responses in GTS patients and healthy individuals. Differing behavioral effects of movement observation in GTS might reflect altered activation of an action observation-execution matching system. To avoid unwanted movements GTS patients probably have to inhibit motor activation induced by observed movement automatically. Thus, movement stimuli may facilitate similar motor responses less but interfere more with different responses in these patients.</div>
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<fC01 i1="01" l="ENG"><s0>Echophenomena in Gilles de la Tourette syndrome (GTS) may relate to deficient processing of observed biological movements. This would be reflected in altered effects of movement observation on motor responses in these patients. We studied reaction times in 11 unmedicated GTS patients without psychiatric comorbidity and healthy subjects. In experiment 1, participants imitated single biological finger movement stimuli or nonbiological dot movement stimuli immediately. In experiment 2, participants responded to a tone while viewing biological or nonbiological movement stimuli that were either compatible (identical) or incompatible (different) with their response. In experiment 1, both patients and healthy subjects responded faster to single biological than to nonbiological stimuli. In experiment 2, biological stimuli caused a larger compatibility-effect in responses than nonbiological stimuli in both groups, provided stimulus presentation and response initiation coincided. Healthy subjects responded faster to compatible biological than nonbiological stimuli. In contrast, GTS patients responded slower to incompatible biological than nonbiological stimuli. Patients' mean reaction time in experiment 2 correlated with phonic tic-frequency. Motor facilitation by observing biological movements appears to rely on concomitance of stimuli and responses in GTS patients and healthy individuals. Differing behavioral effects of movement observation in GTS might reflect altered activation of an action observation-execution matching system. To avoid unwanted movements GTS patients probably have to inhibit motor activation induced by observed movement automatically. Thus, movement stimuli may facilitate similar motor responses less but interfere more with different responses in these patients.</s0>
</fC01>
<fC02 i1="01" i2="X"><s0>002B17</s0>
</fC02>
<fC02 i1="02" i2="X"><s0>002B17F</s0>
</fC02>
<fC03 i1="01" i2="X" l="FRE"><s0>Syndrome de Gilles de la Tourette</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="X" l="ENG"><s0>Gilles de la Tourette syndrome</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="X" l="SPA"><s0>Gilles de la Tourette síndrome</s0>
<s5>01</s5>
</fC03>
<fC03 i1="02" i2="X" l="FRE"><s0>Pathologie du système nerveux</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="X" l="ENG"><s0>Nervous system diseases</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="X" l="SPA"><s0>Sistema nervioso patología</s0>
<s5>02</s5>
</fC03>
<fC03 i1="03" i2="X" l="FRE"><s0>Homme</s0>
<s5>09</s5>
</fC03>
<fC03 i1="03" i2="X" l="ENG"><s0>Human</s0>
<s5>09</s5>
</fC03>
<fC03 i1="03" i2="X" l="SPA"><s0>Hombre</s0>
<s5>09</s5>
</fC03>
<fC03 i1="04" i2="X" l="FRE"><s0>Temps réaction</s0>
<s5>10</s5>
</fC03>
<fC03 i1="04" i2="X" l="ENG"><s0>Reaction time</s0>
<s5>10</s5>
</fC03>
<fC03 i1="04" i2="X" l="SPA"><s0>Tiempo reacción</s0>
<s5>10</s5>
</fC03>
<fC07 i1="01" i2="X" l="FRE"><s0>Pathologie de l'encéphale</s0>
<s5>37</s5>
</fC07>
<fC07 i1="01" i2="X" l="ENG"><s0>Cerebral disorder</s0>
<s5>37</s5>
</fC07>
<fC07 i1="01" i2="X" l="SPA"><s0>Encéfalo patología</s0>
<s5>37</s5>
</fC07>
<fC07 i1="02" i2="X" l="FRE"><s0>Maladie dégénérative</s0>
<s5>38</s5>
</fC07>
<fC07 i1="02" i2="X" l="ENG"><s0>Degenerative disease</s0>
<s5>38</s5>
</fC07>
<fC07 i1="02" i2="X" l="SPA"><s0>Enfermedad degenerativa</s0>
<s5>38</s5>
</fC07>
<fC07 i1="03" i2="X" l="FRE"><s0>Pathologie du système nerveux central</s0>
<s5>39</s5>
</fC07>
<fC07 i1="03" i2="X" l="ENG"><s0>Central nervous system disease</s0>
<s5>39</s5>
</fC07>
<fC07 i1="03" i2="X" l="SPA"><s0>Sistema nervosio central patología</s0>
<s5>39</s5>
</fC07>
<fN21><s1>200</s1>
</fN21>
<fN44 i1="01"><s1>OTO</s1>
</fN44>
<fN82><s1>OTO</s1>
</fN82>
</pA>
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