The Question 10 is on the lateralisation of speech in left handed individuals. The correct answer is given as: 43% of the left hand individuals have their speech area on the left side. This would appear to be incorrect.
It is about 70% of left handers (without early left hemisphere damage) would have their speech lateralised to the left (Reviewed in: Darby D, Walsh K. Hemispheric asymmetry. In: Walsh's Neuropsychology. A clinical approach. 5th Edition. Elsvier Churchill Livingstone, Edinburgh 2005, page 320)
I acknowledge and thank Professor Rosaleen McCarthy, Department of Neuropsychology, Wessex Neurological Centre-Southampton General Hospital for bringing the error in the explanation to my attention.
G Narenthiran
BSc(MedSci) MB ChB MRCSE
Editor
Neurosurgery Quiz - Annals of Neurosurgery
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