Where were those rabbits? A new paradigm to determine cerebral lateralisation of visuospatial memory function in children.
Bottom Line: In a group of 24 adults we found this child-friendly version gave similar results to the original version of the task.In addition, fourteen children aged 6-8 years successfully completed the child-friendly fTCD task, showing a negative lateralisation index, indicating right hemispheric specialisation at the group level.Additionally, we assessed effects of task accuracy and reaction time on the lateralisation index.
Affiliation: Department of Experimental Psychology, University of Oxford, Oxford, United Kingdom. firstname.lastname@example.orgShow MeSH
Mentions: Fig. 2 shows a scatterplot of each participant's LI for the two paradigms. Visual inspection suggests a high-level of congruence between the LIs for the two paradigms, as was confirmed by a significant positive Pearson's correlation coefficient, r(24) = .75, p < 001. As well as computing a LI, it is possible to categorise a participant as being left- or right-lateralised or show bilateral activation, using the standard error of the LI across epochs to determine if the 95% confidence interval of that individual's LI overlaps with zero. When considered in this manner, 87.5% of participants were right-lateralised and 12.5% left-lateralised on the Circles paradigm. On the Rabbits paradigm, 83.3% were right-lateralised and 16.7% left-lateralised. Overlap between the categorisations based on the two paradigms was high: twenty-one (87.5%) individuals were in the same category for both paradigms (19 right-lateralised, 2 left-lateralised). The remaining individuals were categorised as right-lateralised on the Circles paradigm, but as left-lateralised (2) on the Rabbits paradigm or vice versa (1).
Affiliation: Department of Experimental Psychology, University of Oxford, Oxford, United Kingdom. email@example.com