<Li> Rolls's stimulus - reward approach and Stuss's anterior attentional functions (Burgess & Simons, 2005; Burgess, 2003; Burke, 2007). </Li> <P> It may be highlighted that the theories described above differ in their focus on certain processes / systems or construct - lets . Stuss (1999) remarks that the question of homogeneity (single construct) or heterogeneity (multiple processes / systems) of function "may represent a problem of semantics and / or incomplete functional analysis rather than an unresolvable dichotomy" (p. 348). However, further research will show if a unified theory of frontal lobe function that fully accounts for the diversity of functions will be available . </P> <P> For many years, many scientists thought that the frontal lobe was disproportionately enlarged in humans compared to other primates . They thought that this was an important feature of human evolution and was the primary reason why human cognition differs from that of other primates . However, this view has been challenged by newer research . Using magnetic resonance imaging to determine the volume of the frontal cortex in humans, all extant ape species and several monkey species, Semendeferi et al. found that the human frontal cortex was not relatively larger than the cortex of other great apes but was relatively larger than the frontal cortex of lesser apes and the monkeys . </P> <Ul> <Li> <P> Left frontal lobe (click to view animation) </P> </Li> <Li> <P> Lobes </P> </Li> <Li> <P> Base of brain . </P> </Li> <Li> <P> Human brain showing the four major lobes of the cerebrum . Beneath the cerebral cortex are the cerebellum, pons, olive, and medulla oblongata </P> </Li> <Li> <P> Drawing to illustrate the relations of the brain to the skull . </P> </Li> <Li> <P> Frontal lobe </P> </Li> <Li> <P> Frontal lobe </P> </Li> <Li> <P> Cerebrum. Inferior view. Deep dissection </P> </Li> <Li> <P> Ventricles of brain and basal ganglia. Superior view . Horizontal section. Deep dissection </P> </Li> </Ul>

The part of the brain associated with thinking and language is sometimes called the