Listening to music, or part of it, may stir the memory of a past moment, along
with its associated emotions, such occurrences are known as autobiographical
memories. Electroencephalographic (EEG) studies have shown alterations in
memory recall and musical processing. However, no research was found showing a
relation among music, autobiographical memories and
associated emotions. The purpose of this study was to identify cortical areas
involved in the evocation of autobiographical memory (associated with positive and negative events) mediated by musical
stimuli. For that, gamma rhythm was analyzed through EEG recordings
performed by 45 male volunteers while they were submitted to two stimuli: 1) the music capable of recalling memories associated to a positive event; 2) the music capable of evoking
memories associated to a negative event. Gamma band analysis was used in search
of greater brain electrical activity. As results, researchers observed
increased activity in right brain hemisphere during the musical processing,
besides its hypoactivation when volunteers were submitted to musical stimuli
related to memories of negative events.
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