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Abstract
Cognitive control is a key tool for adaptation in dynamic situations. The aim of the study is to assess the relevance of a theoretical framework for cognitive control in dynamic situations, in order to understand brain-injured (BI) car drivers' cognitive impairment. The framework supports a cognitive control multimodality based on the crossing of two orthogonal dimensions: symbolic/subsymbolic; anticipative/reactive control. BI car drivers' behaviour was compared with that of a control group (CTRL) during driving simulator scenarios. Eye movement analysis, among other variables, revealed that BI car drivers made use of a more symbolic and reactive control than did CTRL drivers. CTRL drivers showed a more stable cognitive compromise than BI drivers. The latter became less symbolic and more reactive in the case of difficult scenarios. In addition, BI drivers focused on the main task of trajectory management, with fewer resources devoted to traffic interaction management.
Statement of Relevance:An explanation of differences between BI and CTRL drivers in terms of cognitive control requirements, attention and processing speed is put forward. From this, it is possible to derive some implications in terms of driver assistance (e.g. lane keeping or a warning assistance device) and rehabilitation.
Acknowledgements
Portions of these data were presented at the European Conference on Cognitive Ergonomics (Helsinki, October 2009) and appear in the proceedings of that conference (Hoc et al. Citation2009a). This work took place within the French CNRS research network ‘Psycho Ergo’. This experiment was carried out with the collaboration of ARTA and Johanna Pothier, who invited the BI drivers to participate in the study on the basis of neuropsychological tests. We thank the participants for their contribution to the study. We are grateful to the INRETS MSIS team for their technical assistance. We thank Susan Watts for English revision.