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Linking differences in action perception with differences in action execution.

Macerollo A, Bose S, Ricciardi L, Edwards MJ, Kilner JM - Soc Cogn Affect Neurosci (2015)

Bottom Line: It has been proposed that employing the same motor programs, we use to execute an action when observing the same action underlies this action understanding.Here, we demonstrate that subjects' sensitivity to observed movement speeds is dependent upon how quickly they themselves executed the observed action.This result is consistent with the motor theory of social cognition and suggests that failures in non-verbal social interactions between individuals may in part result from differences in how those individuals move.

View Article: PubMed Central - PubMed

Affiliation: Sobell Department of Motor Neuroscience and Movement Disorders, UCL Institute of Neurology, London, WC1N 3BG, UK, Department of Neuroscience and Sense Organs, University of Bari, Bari, Italy, and.

No MeSH data available.


Related in: MedlinePlus

Through the whole figure blue shows data from the young healthy controls, red the movement disorder patients and green the age matched healthy controls. (a) show the average sensitivity to the observed movement speed for the different groups. (b) shows the correlation of the execution time against observed movement sensitivity for all subjects. The black line shows that the results of a linear regression between these two variables (c) show the correlation of estimated time of dot reappearance and actual time of dot reappearance for all three groups. (d) shows the average slope of the regression between actual time of reappearance and estimated time of reappearance for each subject in the different groups. (e) shows the average sensitivity to the observed movement speed and the observed movement speed for the different groups. Note that this data has been normalized prior o plotting such that the mean was equal to one and the standard deviation equal to one. All error bars are standard errors of the mean. *, indicate significant differences at P < 0.05.
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nsu161-F2: Through the whole figure blue shows data from the young healthy controls, red the movement disorder patients and green the age matched healthy controls. (a) show the average sensitivity to the observed movement speed for the different groups. (b) shows the correlation of the execution time against observed movement sensitivity for all subjects. The black line shows that the results of a linear regression between these two variables (c) show the correlation of estimated time of dot reappearance and actual time of dot reappearance for all three groups. (d) shows the average slope of the regression between actual time of reappearance and estimated time of reappearance for each subject in the different groups. (e) shows the average sensitivity to the observed movement speed and the observed movement speed for the different groups. Note that this data has been normalized prior o plotting such that the mean was equal to one and the standard deviation equal to one. All error bars are standard errors of the mean. *, indicate significant differences at P < 0.05.

Mentions: To test any relationship between executed movement speed and sensitivity to observed movement speed, we correlated the two measures. There was no significant relationship found between the two measures (R2 = 0.045, P = 0.07; Figure 1d). However, this initial analysis assumed that the sensitivity of the observer to the observed MTs would be the same across all observed MTs. This is in distinction to the predictions of the theoretical work where the observer should be least sensitive when movement speeds were most different to the speed the observer would execute the action. To test this, we calculated the sensitivity of the observer to the fastest half of the observed movement speeds (grey box Figure 1a). For the fastest observed movements there was a significant difference in mean sensitivity to the observed MTs between healthy young adults and movement disorder patients [Figure 2a; t(36) = −3.1, P < 0.05], between FMD patients and healthy young controls [t(29) = −3.4, P < 0.05] and between healthy young controls and age-matched controls [t(30) = −2.07, P < 0.05]. There were no significant differences between any of the other contrasts. To test for the relationship between sensitivity to observed MTs and executed MTs, we correlated the two measures. When inferring on the fastest 50% of the observed movements there was a significant correlation between sensitivity and executed movement speed [Figure 2b, parametric R2 = 0.14, P < 0.05; non-parametric R2 = 0.15, P < 0.05]. Thus, as predicted sensitivity to observed movement speed was correlated with execution speed across subjects.Fig. 2


Linking differences in action perception with differences in action execution.

Macerollo A, Bose S, Ricciardi L, Edwards MJ, Kilner JM - Soc Cogn Affect Neurosci (2015)

Through the whole figure blue shows data from the young healthy controls, red the movement disorder patients and green the age matched healthy controls. (a) show the average sensitivity to the observed movement speed for the different groups. (b) shows the correlation of the execution time against observed movement sensitivity for all subjects. The black line shows that the results of a linear regression between these two variables (c) show the correlation of estimated time of dot reappearance and actual time of dot reappearance for all three groups. (d) shows the average slope of the regression between actual time of reappearance and estimated time of reappearance for each subject in the different groups. (e) shows the average sensitivity to the observed movement speed and the observed movement speed for the different groups. Note that this data has been normalized prior o plotting such that the mean was equal to one and the standard deviation equal to one. All error bars are standard errors of the mean. *, indicate significant differences at P < 0.05.
© Copyright Policy - creative-commons
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4526482&req=5

nsu161-F2: Through the whole figure blue shows data from the young healthy controls, red the movement disorder patients and green the age matched healthy controls. (a) show the average sensitivity to the observed movement speed for the different groups. (b) shows the correlation of the execution time against observed movement sensitivity for all subjects. The black line shows that the results of a linear regression between these two variables (c) show the correlation of estimated time of dot reappearance and actual time of dot reappearance for all three groups. (d) shows the average slope of the regression between actual time of reappearance and estimated time of reappearance for each subject in the different groups. (e) shows the average sensitivity to the observed movement speed and the observed movement speed for the different groups. Note that this data has been normalized prior o plotting such that the mean was equal to one and the standard deviation equal to one. All error bars are standard errors of the mean. *, indicate significant differences at P < 0.05.
Mentions: To test any relationship between executed movement speed and sensitivity to observed movement speed, we correlated the two measures. There was no significant relationship found between the two measures (R2 = 0.045, P = 0.07; Figure 1d). However, this initial analysis assumed that the sensitivity of the observer to the observed MTs would be the same across all observed MTs. This is in distinction to the predictions of the theoretical work where the observer should be least sensitive when movement speeds were most different to the speed the observer would execute the action. To test this, we calculated the sensitivity of the observer to the fastest half of the observed movement speeds (grey box Figure 1a). For the fastest observed movements there was a significant difference in mean sensitivity to the observed MTs between healthy young adults and movement disorder patients [Figure 2a; t(36) = −3.1, P < 0.05], between FMD patients and healthy young controls [t(29) = −3.4, P < 0.05] and between healthy young controls and age-matched controls [t(30) = −2.07, P < 0.05]. There were no significant differences between any of the other contrasts. To test for the relationship between sensitivity to observed MTs and executed MTs, we correlated the two measures. When inferring on the fastest 50% of the observed movements there was a significant correlation between sensitivity and executed movement speed [Figure 2b, parametric R2 = 0.14, P < 0.05; non-parametric R2 = 0.15, P < 0.05]. Thus, as predicted sensitivity to observed movement speed was correlated with execution speed across subjects.Fig. 2

Bottom Line: It has been proposed that employing the same motor programs, we use to execute an action when observing the same action underlies this action understanding.Here, we demonstrate that subjects' sensitivity to observed movement speeds is dependent upon how quickly they themselves executed the observed action.This result is consistent with the motor theory of social cognition and suggests that failures in non-verbal social interactions between individuals may in part result from differences in how those individuals move.

View Article: PubMed Central - PubMed

Affiliation: Sobell Department of Motor Neuroscience and Movement Disorders, UCL Institute of Neurology, London, WC1N 3BG, UK, Department of Neuroscience and Sense Organs, University of Bari, Bari, Italy, and.

No MeSH data available.


Related in: MedlinePlus