B. Herbelin

2 papers in the library · publishing 2016-2020

Papers

Mechanisms of the breathing contribution to bodily self‐consciousness in healthy humans: Lessons from machine‐assisted breathing?

Psychophysiology March 12, 2020 S. Betka, Elisa Canzoneri, D. Adler et al.

Synchronous visual feedback that matches a person's breathing—such as a flashing outline around a virtual body whose intensity changes with each breath—can alter bodily self-consciousness, making people feel more located in and in control of the virtual body. In 17 healthy participants, this effect occurred whether they actively initiated machine-delivered breaths or the machine set the timing, showing that the sense of owning a virtual body does not depend on the brain's motor commands to breathe. Asynchronous visual feedback reduced the sense of being located in the virtual body and increased variability in tidal volume, which may lessen breathing discomfort. These findings could inform virtual-reality tools for respiratory therapy.

DOI: 10.1111/psyp.13564 Full text Psychology Medicine Engineering

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