Subjective embodiment during the rubber hand illusion predicts severity of premonitory sensations and tics in Tourette Syndrome.pdf (293.28 kB)
Subjective embodiment during the rubber hand illusion predicts severity of premonitory sensations and tics in Tourette Syndrome
journal contribution
posted on 2023-06-09, 15:19 authored by Charlotte RaeCharlotte Rae, Dennis Larsson, Jessica EcclesJessica Eccles, Jamie WardJamie Ward, Hugo CritchleyHugo CritchleyIn Tourette Syndrome, the expression of tics and commonly preceding premonitory sensations is associated with perturbed subjective feelings of self-control and agency. We compared responses to the Rubber Hand Illusion in 23 adults with TS and 22 controls. Both TS and control participants reported equivalent subjective embodiment of the artificial hand: feelings of ownership, location, and agency were greater during synchronous visuo-tactile stimulation, compared to asynchronous. However, individuals with TS did not manifest greater proprioceptive drift, an objective marker of embodiment observed in controls. An 'embodiment prediction error' index of the difference between subjective embodiment and objective proprioceptive drift correlated with severity of premonitory sensations. Feelings of ownership also correlated with premonitory sensation severity, and feelings of agency with tic severity. These findings suggest that subjective bodily ownership, as measured by the rubber hand illusion, contributes to susceptibility to the premonitory sensations that may be a precipitating factor in tics.
Funding
Sackler Centre - donation; G1813; SACKLER-DR MORTIMER AND THERESA SACKLER FOUNDATION
History
Publication status
- Published
File Version
- Accepted version
Journal
Consciousness and CognitionISSN
1053-8100Publisher
ElsevierExternal DOI
Volume
65Page range
368-377Department affiliated with
- BSMS Neuroscience Publications
Research groups affiliated with
- Sackler Centre for Consciousness Science Publications
- Sussex Neuroscience Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2018-10-08First Open Access (FOA) Date
2019-10-15First Compliant Deposit (FCD) Date
2018-10-03Usage metrics
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