Department of Psychology, University of Western Ontario, London, ON, Canada; Brain and Mind Institute, University of Western Ontario, London, ON, Canada.
Department of Psychology, University of Western Ontario, London, ON, Canada; Brain and Mind Institute, University of Western Ontario, London, ON, Canada.
Acta Psychol (Amst). 2021 Jul;218:103354. doi: 10.1016/j.actpsy.2021.103354. Epub 2021 Jun 24.
Multisensory integration, the process by which sensory information from different sensory modalities are bound together, is hypothesized to contribute to perceptual symptomatology in schizophrenia, in whom multisensory integration differences have been consistently found. Evidence is emerging that these differences extend across the schizophrenia spectrum, including individuals in the general population with higher levels of schizotypal traits. In the current study, we used the McGurk task as a measure of multisensory integration. We measured schizotypal traits using the Schizotypal Personality Questionnaire (SPQ), hypothesizing that higher levels of schizotypal traits, specifically Unusual Perceptual Experiences and Odd Speech subscales, would be associated with decreased multisensory integration of speech. Surprisingly, Unusual Perceptual Experiences were not associated with multisensory integration. However, Odd Speech was associated with multisensory integration, and this association extended more broadly across the Disorganized factor of the SPQ, including Odd or Eccentric Behaviour. Individuals with higher levels of Odd or Eccentric Behaviour scores also demonstrated poorer lip-reading abilities, which partially explained performance in the McGurk task. This suggests that aberrant perceptual processes affecting individuals across the schizophrenia spectrum may relate to disorganized symptomatology.
多感觉整合，即不同感觉模态的信息绑定在一起的过程，被假设为导致精神分裂症的知觉症状，在精神分裂症患者中，已经一致发现了多感觉整合的差异。有证据表明，这些差异延伸到了精神分裂症谱系的各个方面，包括具有较高精神分裂特质水平的一般人群中的个体。在当前的研究中，我们使用 McGurk 任务作为多感觉整合的测量手段。我们使用精神分裂症人格问卷（SPQ）来衡量精神分裂特质，假设更高水平的精神分裂特质，特别是异常知觉体验和奇怪言语分量表，与言语的多感觉整合减少有关。令人惊讶的是，异常知觉体验与多感觉整合无关。然而，奇怪言语与多感觉整合有关，这种关联更广泛地扩展到 SPQ 的紊乱因子，包括奇怪或古怪行为。具有更高水平的奇怪或古怪行为分数的个体也表现出较差的唇读能力，这部分解释了在 McGurk 任务中的表现。这表明，影响精神分裂症谱系中个体的异常知觉过程可能与紊乱症状有关。
