Dipartimento di Medicina dei Sistemi & CBMS, Università di Roma Tor Vergata, Roma, Italy.
Institut des Sciences Cognitives Marc Jeannerod, CNRS UMR, Bron, France.
Cortex. 2019 Apr;113:29-36. doi: 10.1016/j.cortex.2018.11.020. Epub 2018 Nov 29.
It has been suggested that agency signals generated by enactment provide memories with an enduring episodic marker that can successively be exploited to facilitate recall. Current theories of motor awareness highlight the role of prospective and retrospective sensorimotor cues in the construction of sense of agency (SA). To explore how these signals impact on memory for actions, we studied the effect of enactment in a patient with complete loss of somatic sensation below nose level, and compared her performance to that of a group of neurologically intact individuals. A memory advantage for enacted material was clearly detectable in the control group and, interestingly, also in sensory deafferented patient GL. This novel finding shows that robust memory for actions can be obtained even in the absence of somatosensory reafferences. We hypothesize that the neural processes evoked by intention to move, together with visual experience about one's actions, provide the long-lasting agency signals that are responsible for the special quality of self-performed actions and may support autobiographical experience. Proprioceptive cues, being more time-constrained, are critical to online SA but do not necessarily partake in offline action representations.
有人认为，执行产生的机构信号为记忆提供了一个持久的情景标记，这个标记可以被连续利用来促进回忆。当前的运动意识理论强调了前瞻性和回溯性感觉运动线索在构建机构感（SA）中的作用。为了探索这些信号如何影响对动作的记忆，我们研究了在一名嗅觉丧失的患者中执行的影响，并将她的表现与一组神经完整的个体进行了比较。在对照组中，可以明显检测到对执行材料的记忆优势，有趣的是，在感觉剥夺的患者 GL 中也可以检测到。这一新颖的发现表明，即使没有体感反馈，也可以获得对动作的强烈记忆。我们假设，意图运动引起的神经过程，以及关于自己动作的视觉体验，提供了持久的机构信号，这些信号负责自我执行动作的特殊质量，并可能支持自传体体验。本体感觉线索受到时间限制，对在线 SA 至关重要，但不一定参与离线动作表示。
