Contrasting hemispheric asymmetries for emotional processing from event-related potentials and behavioral responses.

February 22, 2018Neuropsychology

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Key Points

The study investigates how different brain hemispheres process emotions based on behavioral and electrophysiological data.
Participants (N=16) were presented with happy and angry faces in a divided visual field paradigm.
Emotional processing theories were tested using behavioral and event-related potentials (ERPs) assessments.
Topographic maps guided the selection of parietal and frontal sites for ERP measurements.
Behavioral results supported the valence hypothesis, showing influence of handedness on positive emotions.
Event-related potentials at parietal sites indicated larger amplitudes in the right hemisphere, supporting the right hemisphere hypothesis.
Mixed hemispheric asymmetries emerged in unilateral conditions at frontal sites, with no clear asymmetry in bilateral conditions.

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Examines emotional processing in healthy participants, suggesting complexity in hemispheric roles.

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Prete et al. (2018) studied this question.

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