How Expecting to Move Affects Sensory Signals
Author Information
Author(s): Martin Voss, James N. Ingram, Daniel M. Wolpert, Patrick Haggard
Primary Institution: Sobell Department of Motor Neuroscience, Institute of Neurology, London, United Kingdom
Hypothesis
Does the expectation of movement influence sensory signal perception?
Conclusion
The study found that expecting to move can change how we perceive sensory signals, even if the movement doesn't actually happen.
Supporting Evidence
- Attenuation of sensory signals was observed when the right finger was cued to move.
- No attenuation occurred when the left finger was cued, indicating the effect is specific to the expected movement.
- Increased expectation of a right cue led to sensory attenuation even when the left finger was cued.
Takeaway
When you think about moving your finger, it can make you feel less of a poke on that finger, even if you don't actually move it.
Methodology
Participants received electrical stimuli on their fingers while being cued to move one of them, and their perception of the stimuli was measured.
Potential Biases
Participants were naïve to the study's purpose, which may reduce bias but could also affect their responses.
Limitations
The study only included right-handed participants, which may limit the generalizability of the findings.
Participant Demographics
24 right-handed subjects (10 male, 14 female, age range 21–28 years)
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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