Moon, Hyuk-June Albert, Louis De Falco, Emanuela Tasu, Corentin Gauthier, Baptiste Park, Hyeong-Dong Blanke, Olaf 2024-03-18T05:30:09Z 2024-03-18T05:30:09Z 2024-03-18 2024-03 0027-8424 https://pubs.kist.re.kr/handle/201004/149489 Grid cells in the entorhinal cortex (EC) encode an individual’s location in space, integrating both environmental and multisensory bodily cues. Notably, body-derived signals are also primary signals for the sense of self. While studies have demonstrated that continuous application of visuo-tactile bodily stimuli can induce perceptual shifts in self-location, it remains unexplored whether these illusory changes suffice to trigger grid cell？like representation (GCLR) within the EC, and how this compares to GCLR during conventional virtual navigation. To address this, we systematically induced illusory drifts in self-location toward controlled directions using visuo-tactile bodily stimulation, while maintaining the subjects’ visual viewpoint fixed (absent conventional virtual navigation). Subsequently, we evaluated the corresponding GCLR in the EC through functional MRI analysis. Our results reveal that illusory changes in perceived self-location (independent of changes in environmental navigation cues) can indeed evoke entorhinal GCLR, correlating in strength with the magnitude of perceived self-location, and characterized by similar grid orientation as during conventional virtual navigation in the same virtual room. These data demonstrate that the same grid-like representation is recruited when navigating based on environmental, mainly visual cues, or when experiencing illusory forward drifts in self-location, driven by perceptual multisensory bodily cues. English National Academy of Sciences Changes in spatial self-consciousness elicit grid cell-like representation in the entorhinal cortex Article 10.1073/pnas.2315758121 1 Proceedings of the National Academy of Sciences of the United States of America, v.121, no.12 Proceedings of the National Academy of Sciences of the United States of America 121 12 N scie scopus 001209183200007 Multidisciplinary Sciences Science & Technology - Other Topics Article OWNERSHIP PERSPECTIVE KNOWLEDGE HUMANS PART MAP VIRTUAL-REALITY LOCATION grid cells self- consciousness fMRI virtual reality navigation