Pyasik Maria, Burin Dalila, Pia Lorenzo
SAMBA - SpAtial, Motor and Bodily Awareness Research Group, Department of Psychology, University of Turin, Via Po 14, 10123 Turin, Italy.
Smart-Aging Research Center, Kawashima Laboratory, Institute of Development, Aging and Cancer (IDAC), Tohoku University 4-1 Seiryocho, Aobaku, Sendai 980-8575, Japan.
Acta Psychol (Amst). 2018 Apr;185:219-228. doi: 10.1016/j.actpsy.2018.03.001. Epub 2018 Mar 16.
The relation between sense of body ownership and sense of agency is still highly debated. Here we investigated in a large sample of healthy participants the associations between several implicit and explicit indexes of the two senses. Specifically, we examined the correlations between proprioceptive shift (implicit measure) and questionnaire on the subjective experience of ownership (explicit measure) within the rubber hand illusion paradigm (body ownership), and intentional binding (implicit measure), attenuation of the intensity of auditory outcomes of actions (implicit measure) and questionnaire on the subjective experience of authorship (explicit measure) within the Libet's clock paradigm (sense of agency). Our results showed that proprioceptive shift was positively correlated with the attenuation of auditory outcomes. No significant correlations were found between the explicit measures of the two senses. We argue that the individual spatiotemporal constraints subserving the integration of sensory-related signals (implicit signature) would be common to both senses, whereas their subjective experience (explicit signature) would rely on additional processes specific for any given sense.
身体所有权感与能动感之间的关系仍存在激烈争论。在此，我们在大量健康参与者样本中研究了这两种感觉的几个内隐和外显指标之间的关联。具体而言，我们在橡皮手错觉范式（身体所有权）中考察了本体感觉偏移（内隐测量）与关于所有权主观体验的问卷（外显测量）之间的相关性，以及在利贝特时钟范式（能动感）中考察了意向性绑定（内隐测量）、动作听觉结果强度的减弱（内隐测量）与关于作者身份主观体验的问卷（外显测量）之间的相关性。我们的结果表明，本体感觉偏移与听觉结果的减弱呈正相关。在这两种感觉的外显测量之间未发现显著相关性。我们认为，支持感觉相关信号整合的个体时空限制（内隐特征）对这两种感觉来说是共同的，而它们的主观体验（外显特征）将依赖于特定于任何一种给定感觉的额外过程。
