Pazzaglia Mariella, Giannini Anna Maria, Federico Francesca
Department of Psychology, Sapienza University of Rome Via dei Marsi 78, 00185 Rome, Italy.
IRCCS Fondazione Santa Lucia, Via Ardeatina 306, 00179 Rome, Italy.
Brain Sci. 2020 Mar 15;10(3):170. doi: 10.3390/brainsci10030170.
The multisensory regions in frontoparietal cortices play a crucial role in the sense of body and self. Disrupting this sense may lead to a feeling of disembodiment, or more generally, a sense of disownership. Experimentally, this altered consciousness disappears during illusory own-body perceptions, increasing the intensity of perceived ownership for an external virtual limb. In many clinical conditions, particularly in individuals with a discontinuous or absent sense of bodily awareness, the brain may effortlessly create a convincing feeling of body ownership over a surrogate body or body part. The immediate visual input dominates the current bodily state and induces rapid plastic adaptation that reconfigures the dynamics of bodily representation, allowing the brain to acquire an alternative sense of body and self. Investigating strategies to deconstruct the lack of a normal sense of bodily ownership, especially after a neurological injury, may aid the selection of appropriate clinical treatment.
额顶叶皮质中的多感官区域在身体感知和自我意识方面起着至关重要的作用。这种感知的中断可能会导致脱离身体的感觉，或者更普遍地说，产生一种非自我所有感。在实验中，这种改变的意识在虚幻的自我身体感知过程中消失，增强了对外部虚拟肢体的感知所有权强度。在许多临床情况下，尤其是那些身体意识不连续或缺失的个体，大脑可能会轻易地在替代身体或身体部位上产生令人信服的身体所有权感觉。即时视觉输入主导当前身体状态，并引发快速的可塑性适应，重新配置身体表征的动态过程，使大脑能够获得一种替代的身体和自我感觉。研究解构正常身体所有权感觉缺失的策略，特别是在神经损伤后，可能有助于选择合适的临床治疗方法。
