Active self-motion control and the role of agency under ambiguity

Frontiers in Psychology

Psychology

Lionel Bringoux¹  Bruno Berberian²  Jean-Christophe Sarrazin²  Anne-Laure Rineau² 

[1] CNRS, ISM, Aix Marseille Univ, Marseille, France;ONERA, Information Processing and Systems Department (DTIS), Salon-de-Provence, France;

关键词: self-motion perception;    multisensory integration;    agency;    discrimination task;    predictive coding;   

DOI  :  10.3389/fpsyg.2023.1148793

 received in 2023-01-20, accepted in 2023-03-31,  发布年份 2023

来源: Frontiers

【 摘 要 】

PurposeSelf-motion perception is a key factor in daily behaviours such as driving a car or piloting an aircraft. It is mainly based on visuo-vestibular integration, whose weighting mechanisms are modulated by the reliability properties of sensory inputs. Recently, it has been shown that the internal state of the operator can also modulate multisensory integration and may sharpen the representation of relevant inputs. In line with the concept of agency, it thus appears relevant to evaluate the impact of being in control of our own action on self-motion perception.MethodologyHere, we tested two conditions of motion control (active/manual trigger versus passive/ observer condition), asking participants to discriminate between two consecutive longitudinal movements by identifying the larger displacement (displacement of higher intensity). We also tested motion discrimination under two levels of ambiguity by applying acceleration ratios that differed from our two “standard” displacements (i.e., 3 s; 0.012 m.s−2 and 0.030 m.s−2).ResultsWe found an effect of control condition, but not of the level of ambiguity on the way participants perceived the standard displacement, i.e., perceptual bias (Point of Subjective Equality; PSE). Also, we found a significant effect of interaction between the active condition and the level of ambiguity on the ability to discriminate between displacements, i.e., sensitivity (Just Noticeable Difference; JND).OriginalityBeing in control of our own motion through a manual intentional trigger of self-displacement maintains overall motion sensitivity when ambiguity increases.

【 授权许可】

Unknown   
Copyright © 2023 Rineau, Berberian, Sarrazin and Bringoux.