... so through the Corpus Callosum. Hemispheric specialisation (also known as lateralisation of function) states that some of our functions are controlled more by one hemisphere. It is thought that the left hemisphere of the brain is specialised for dealing with the processing of language, while the right hemisphere is dominant for recognising emotions and comprehending complex visual patterns (Kalat, 2001). Russell and Espir (1961) and Penfield and Roberts (1959) cited in Pinel (2003) found that in almost all dextrals (right handed dominance) and in the majority of sinestrals (left handed dominance) the left hemisphere was dominant for language related abilities. It was also concluded that with respect to language lateralisation, sinestrals are more variable than dextrals. Numerous studies have been conducted into hemispheric specialisation activity through the measurement of finger tapping rate whilst performing a cognitive task. Hellige and Longstreth (1981) found that participants tapping rate reduced more for the ...

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