Music-induced changes in functional cerebral asymmetries

Area of Science:

• Neuroscience
• Cognitive Psychology
• Music Psychology

Background:

• The precise mechanisms underlying emotion lateralization in the brain remain debated.
• Research questions whether hemispheric dominance or activated networks drive emotional processing and experience.

Purpose of the Study:

• To investigate the impact of music-induced emotions on functional cerebral asymmetries.
• To examine how happy and sad music affect established laterality tasks.

Main Methods:

• Participants listened to either happy (Mozart) or sad (Beethoven) music excerpts before performing laterality tasks.
• Tasks included emotional chimeric faces, visual line bisection, and dichotic listening.
• Experiment 4 manipulated music tempo to isolate its effect.

Main Results:

• Happy music reduced right hemispheric bias in facial emotion recognition and visuospatial attention.
• Happy music increased left hemispheric bias in language lateralization.
• Effects on lateralization were independent of music-induced emotional state changes.

Conclusions:

• Music listening directly modulates functional cerebral asymmetries in cognitive and emotional tasks.
• The influence of music on brain lateralization is not solely mediated by changes in emotional state.