A Data-Based Approach for Selecting Pre- and Intra-Operative Language Mapping Tasks

Frontiers in Neuroscience

Mohamed L. Seghier¹  David W. Green²  Matthew A. Kirkman³  Justyna O. Ekert⁴  Cathy J. Price⁴ 

[1] Department of Biomedical Engineering, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates;Department of Experimental Psychology, University College London, London, United Kingdom;Department of Neurosurgery, Queen’s Medical Centre, Nottingham, United Kingdom;Wellcome Centre for Human Neuroimaging, UCL Queen Square Institute of Neurology, London, United Kingdom;

关键词: neurosurgery;    fMRI;    brain mapping;    direct electrical stimulation (DES);    language;    object naming;   

DOI  :  10.3389/fnins.2021.743402

来源: DOAJ

【 摘 要 】

Background: Pre- and intra-operative language mapping in neurosurgery patients frequently involves an object naming task. The choice of the optimal object naming paradigm remains challenging due to lack of normative data and standardization in mapping practices. The aim of this study was to identify object naming paradigms that robustly and consistently activate classical language regions and could therefore be used to improve the sensitivity of language mapping in brain tumor and epilepsy patients.Methods: Functional magnetic resonance imaging (fMRI) data from two independent groups of healthy controls (total = 79) were used to generate threshold-weighted voxel-based consistency maps. This novel approach allowed us to compare inter-subject consistency of activation for naming single objects in the visual and auditory modality and naming two objects in a phrase or a sentence.Results: We found that the consistency of activation in language regions was greater for naming two objects per picture than one object per picture, even when controlling for the number of names produced in 5 s.Conclusion: More consistent activation in language areas for naming two objects compared to one object suggests that two-object naming tasks may be more suitable for delimiting language eloquent regions with pre- and intra-operative language testing. More broadly, we propose that the functional specificity of brain mapping paradigms for a whole range of different linguistic and non-linguistic functions could be enhanced by referring to databased models of inter-subject consistency and variability in typical and atypical brain responses.

【 授权许可】

Unknown