POSTER DETAILS RELATED POSTERS

POSTER DETAILS

Objets, Shadows and the Brain

Irini Giannopulu, Elahe Abdi, Tomoko Yonezawa

Date / Location: Tuesday, 12 July 2022 / S05-073
Add this poster event to your πŸ—“
Immersed in a virtual reality environment, 40 participants (20 female and 20 males) aged 25 years old in average were instructed to perceive and indicate the synchronicity or asynchronicity between a mobile object shadow with regard to a mobile object from the one side, and the synchronicity or asynchronicity between their own body shadow and position in space from the other. Their brain activity was recording using an EEG system and an fNIRS device. Bilateral beta (13.5-30 Hz) oscillations and OxyHb concentrations of frontal and parietal brain areas were analysed as they were considered predictors of perceptual and motor performance. According to the general hypothesis, beta oscillations and OxyHb concentrations associated with the perception of an object shadow would envision the neural activity of the body shadow. It was therefore expected that the fronto-patietal neural activations associated with perception of object shadow would anticipate the neural activations of body shadow. A series of Multiple Regression Analysis (MRA) revealed that body shadow specific modulations in the bilateral frontal areas reflect and infer object shadow relevant sensorimotor perception, and subsequent decision making in 3D virtual environments. The current data suggest the existence of a cortical network in which neural dynamics of object shadows would provide a mechanism for the formation of functional networks during internal re/activation of body relevant cortical representations, that is, a substitution of the physical body. They also suggest that prediction and anticipation along with inference and exploration might be general principles of cortical functioning in real and 3D virtual environments.

POSTERS YOU MIGHT BE INTERESTED IN

πŸ“ƒ Large-scale cortical network modulations during dynamic body perception
Baichen Li, Marta Poyo Solanas, ... , Beatrice De Gelder
πŸ“ƒ Mapping touch on hands and tools involves similar brain dynamics
CΓ©cile Fabio, RomΓ©o Salemme, ... , Luke Miller
πŸ“ƒ Age Differences in Visuo-proprioceptive Adaptation
Kaan Karan, Kathleen Y. Kang, ... , Jakub Limanowski
πŸ“ƒ Calcium fluctuations representations of environment, navigation and exploration in mice PFC
Melisa Maidana Capitan, Alejandra Alonso, ... , Francesco P. Battaglia
πŸ“ƒ Object decoding with spatial attention in the human lateral occipital complex
Jesus Garcia Ramirez, MichaΓ«l Vanhoyland, ... , Tom Theys