Seeing Your Error Alters My Pointing
Author Information
Author(s): Ronchi Roberta, Revol Patrice, Katayama Masahiro, Rossetti Yves, Farnè Alessandro
Primary Institution: INSERM U1028, Lyon Neuroscience Research Center, Lyon, France
Hypothesis
Can mere observation of pointing errors made by another person induce after-effects in the observer's sensori-motor behavior?
Conclusion
Observing another person's pointing errors can lead to a leftward after-effect in the observer's proprioceptive estimation of their body midline.
Supporting Evidence
- Participants showed significant leftward shifts in proprioceptive and visual estimations after observing pointing errors.
- Only the constant error observation condition produced a leftward after-effect in proprioceptive measures.
- Participants reported feeling a stronger sense of movement in their own arm when observing constant errors.
Takeaway
If you watch someone point incorrectly, it can make you feel like your own body is off-center, even if you didn't move at all.
Methodology
Participants observed another person making incorrect pointing movements while their own proprioceptive and visual estimations were measured before and after the observation.
Potential Biases
Participants' prior knowledge about prism adaptation effects could influence their responses.
Limitations
Participants may not have fully recognized the errors they observed, which could affect the results.
Participant Demographics
56 right-handed participants (22 males, mean age 27.84) with normal or corrected vision.
Statistical Information
P-Value
p=0.038
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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