Title :

Cortical Correlates of Visuospatial Switching ProcessesBetween Egocentric and Allocentric Frames of Reference:a fNIRS Study

Author(s) :

Orti, Renato [Auteur]
Università degli studi della Campania "Luigi Vanvitelli" = University of the Study of Campania Luigi Vanvitelli
Coello, Yann [Auteur]
Sciences Cognitives et Sciences Affectives (SCALab) - UMR 9193
Ruotolo, Francesco [Auteur]
Università degli studi della Campania "Luigi Vanvitelli" = University of the Study of Campania Luigi Vanvitelli
Vincent, Marion [Auteur]
Laboratoire Sciences Cognitives et Sciences Affectives - UMR 9193 [SCALab]
Bartolo, Angela [Auteur]
Laboratoire Sciences Cognitives et Sciences Affectives - UMR 9193 [SCALab]
Iachini, Tina [Auteur]
Università degli studi della Campania "Luigi Vanvitelli" = University of the Study of Campania Luigi Vanvitelli
Ruggiero, Gennaro [Auteur]
Università degli studi della Campania "Luigi Vanvitelli" = University of the Study of Campania Luigi Vanvitelli

Journal title :

Brain Topography: a Journal of Cerebral Function and Dynamics

Abbreviated title :

Brain Topogr

Publisher :

Springer Link

Publication date :

2023-12

ISSN :

0896-0267

HAL domain(s) :

Sciences cognitives

English abstract : [en]

Human beings represent spatial information according to egocentric (body-to-object) and allocentric (object-to-object) frames of reference. In everyday life, we constantly switch from one frame of reference to another in ...
Show more >Human beings represent spatial information according to egocentric (body-to-object) and allocentric (object-to-object) frames of reference. In everyday life, we constantly switch from one frame of reference to another in order to react effectively to the specific needs of the environment and task demands. However, to the best of our knowledge, no study to date has investigated the cortical activity of switching and non-switching processes between egocentric and allocentric spatial encodings. To this aim, a custom-designed visuo-spatial memory task was administered and the cortical activities underlying switching vs. non-switching spatial processes were investigated. Changes in concentrations of oxygenated and deoxygenated haemoglobin were measured using functional near-infrared spectroscopy (fNIRS). Participants were asked to memorize triads of geometric objects and then to make two consecutive judgments about the same triad. In the non-switching condition, both spatial judgments considered the same frame of reference: only egocentric or only allocentric. In the switching condition, if the first judgment was egocentric, the second was allocentric (or vice versa). The results showed a generalized activation of frontal regions during switching compared to non-switching condition. Additionally, increased cortical activity was found in the temporo-parietal junction during the switching condition compared to the non-switching condition. Overall, these results illustrate the cortical activity underlying the processing of switching between body position and environmental stimuli, showing an important role of the temporo-parietal junction and frontal regions in the preparation and switching between egocentric and allocentric reference frames.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
CHU Lille

Collections :

• Sciences Cognitives et Sciences Affectives (SCALab) - UMR 9193

Research team(s) :

Équipe Action, Vision et Apprentissage (AVA)

Submission date :

2024-01-11T15:20:25Z
2024-02-12T08:54:44Z