The temporal sensitivity to the tactile-induced double flash illusion mediates the impact of beta oscillations on schizotypal personality traits |
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| Affiliation: | 1. Department of Psychology, University of Illinois at Urbana-Champaign, United States of America;2. Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, United States of America;1. The University of Western Ontario, Department of Psychology, London, ON, Canada;2. The University of Western Ontario, Brain and Mind Institute, London, ON, Canada;3. Vanderbilt University, Department of Psychology, Nashville, TN, USA;4. Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN, USA;5. University of Toronto, Department of Psychology, Toronto, ON, Canada;6. Rotman Research Institute, Toronto, ON, Canada;7. Vanderbilt University Medical Center, Department of Hearing and Speech Sciences, Nashville, TN, USA;8. Vanderbilt Kennedy Center, Vanderbilt University Medical Center, Nashville, TN, USA;9. Vanderbilt University, Department of Psychology, Nashville, TN, USA;10. Vanderbilt University Medical Center, Department of Psychiatry, Nashville, TN, USA |
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| Abstract: | The coherent experience of the self and the world depends on the ability to integrate vs. segregate sensory information. Optimal temporal integration between the senses is mediated by oscillatory properties of neural activity. Previous research showed reduced temporal sensitivity to multisensory events in schizotypy, a personality trait linked to schizophrenia. Here we used the tactile-induced Double-Flash-Illusion (tDFI) to investigate the tactile-to-visual temporal sensitivity in schizotypy, as indexed by the temporal window of illusion (TWI) and its neural underpinnings. We measured EEG oscillations within the beta band, recently shown to correlate with the tDFI. We found individuals with higher schizotypal traits to have wider TWI and slower beta waves accounting for the temporal window within which they perceive the illusion. Our results indicate reduced tactile-to-visual temporal sensitivity to mediate the effect of slowed oscillatory beta activity on schizotypal personality traits. We conclude that slowed oscillatory patterns might constitute an early marker for psychosis proneness. |
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| Keywords: | Multisensory Integration Schizotypy Temporal Sensitivity Beta Oscillations |
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