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The expressions related to happiness as well as surprise are detected at a faster rate than detecting sadness and fear.
The finding of this particular study is the effort of a team of Brazilian and Spanish researchers. These researchers did a study on processing of emotional expressions by people by observing the pattern of the cerebral asymmetry related to the perceiving the positive as well as negative facial signals.
This research team had worked along with 80 students of psychology out of which 65 were female. The research had been conducted for analysing the differences between the cerebral hemispheres of these people using the technique called “divided visual field”. This technique is based on visual system’s analytical properties.
According to J Antonio Aznar-Casanova, the most prominent feature of this study is the way it has ensured that information is focused on one or the other cerebral hemisphere. J Antonio Aznar-Casanova is one among the authors of this study as well as a researcher at University of Barcelona.
These studies which will be published in Laterality, a journal, suggest that the right cerebral hemisphere has the ability of processing emotions in a better fashion. Also, this efficiency of the right cerebral hemisphere is more evident when it comes to the detection of happiness.
There is yet another theory which says that the efficiency of processing of emotions by the cerebral hemispheres depends on the type of emotions. Even though there have been evidences supporting both the theories a certain consensus in favour of the lateralisation of emotional processing predicted by the approach-withdrawal hypothesis is present.
