<P> Emotions are complex and involve a variety of physical and cognitive responses, many of which are not well understood . The general purpose of emotions is to produce a specific response to a stimulus . Feelings are the conscious perception of emotions, and when an emotion occurs frequently or continuously this is called a mood . </P> <P> A variety of scientific studies have found lateralization of emotions . FMRI and lesion studies have shown asymmetrical activation of brain regions while thinking of emotions, responding to extreme emotional stimuli, and viewing emotional situations . Processing and production of facial expressions also appear to be asymmetric in nature . Many theories of lateralization have been proposed and some of those specific to emotions . Please keep in mind that most of the information in this article is theoretical and scientists are still trying to understand emotion and emotional lateralization . Also, some of the evidence is contradictory . Many brain regions are interconnected and the input and output of any given region may come from and go to many different regions . </P> <P> Some variations of right hemisphere dominance are...a) The right hemisphere has more control over emotion than left hemisphere . b) The right hemisphere is dominant in emotional expression in a similar way that the left hemisphere is dominant in language . c) The right hemisphere is dominant in the perception of facial expression, body posture, and prosody . d) The right hemisphere is important for processing primary emotions such as fear while the left hemisphere is important for preprocessing social emotions . </P> <P> General lesions in the right hemisphere reduce or eliminate electrodermal response (skin conductance response ((SCR)) to emotionally meaningful stimuli while the lesions in the left hemisphere do not show changes in SCR response . </P>

Which hemisphere is more specialized for expression of emotions
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