Sensitivity to Egocentric and Allocentric Views in the Hand Laterality Task
Author Information
Author(s): Nuala Brady, Corrina Maguinness, Áine Ní Choisdealbha
Primary Institution: University College Dublin
Hypothesis
Does motor imagery hold for both egocentric and allocentric views in the hand laterality task?
Conclusion
The study finds that motor imagery is used for egocentric views but not for allocentric views of hands.
Supporting Evidence
- Response times increase with the angle of rotation from 0°.
- Sensitivity is high for egocentric views but drops significantly for allocentric views.
- High positive correlation in response times for egocentric views suggests a common use of motor imagery.
Takeaway
People can easily tell if a hand is right or left when looking at it from their own perspective, but it gets harder when they have to think about someone else's hand.
Methodology
Participants judged the handedness of images of hands in various orientations while their response times and sensitivity were measured.
Limitations
The study's design may induce a strategy of motor imagery that breaks down for allocentric views.
Participant Demographics
30 right-handed participants (13 males) with a mean age of 26.9 years.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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