Petr Grivaz

2 papers in the library · publishing 2016-2018

Papers

Common Recruitment of Angular Gyrus in Episodic Autobiographical Memory and Bodily Self-Consciousness.

Frontiers in Behavioral Neuroscience January 1, 2018 Lucie Bréchet, Petr Grivaz, Baptiste Gauthier et al.

The inferior parietal lobule, particularly the angular gyrus, may be a shared brain region for both bodily self-consciousness—the sense of being located in a body and experiencing the world from a first-person perspective—and episodic autobiographical memory, the conscious reliving of past events. An anatomical overlap in the angular gyrus was found bilaterally when comparing a prior study on spatial aspects of bodily self-consciousness with a new meta-analysis of functional neuroimaging studies on episodic autobiographical memory. No overlap appeared with semantic autobiographical memory, which involves factual knowledge about one's past. These preliminary findings suggest the bilateral angular gyrus is a key structure for both online self-awareness and the re-experiencing of personal memories.

DOI: 10.3389/fnbeh.2018.00270 Full text Ale meta-analysis Bodily self-consciousness Episodic autobiographical memory FMRI +4

Visual gravity contributes to subjective first-person perspective

Neuroscience of Consciousness May 9, 2016 C. Pfeiffer, Petr Grivaz, B. Herbelin et al.

The direction of a person's first-person perspective—the sense of where one experiences the world from—can be altered by conflicting multisensory cues about gravity. In healthy volunteers lying on their backs, visual motion of objects either toward or away from the body, combined with touch and vestibular signals, shifted the experienced direction of perspective. When visual motion was directed away from the body, participants more often reported a downward-directed perspective, contradicting their actual body orientation. These shifts correlated with changes in self-location, showing that visual gravitational cues help define the subjective viewpoint from which people perceive the world.

DOI: 10.1093/nc/niw006 Full text Medicine Psychology