EEG phase synchronization during emotional response to positive and negative film stimuli

Abstract

In the present study the patterns of interdependency between different brain regions were investigated as volunteers looked at emotional and non-emotional film stimuli. The main goal was to evaluate the emotion-related differences and to check their consistency during the elaboration of the same type of stimuli in repeated presentations. A measure called synchronization index (SI) was used to detect interdependencies in EEG signals. The hypotheses were that emotional-information processing could involve variation in synchronized activity and that two valence-specific emotions -happiness and sadness -differ from each other. The SI obtained was compared among the various experimental conditions and significant changes were found. The results demonstrated an overall increase of SI during emotional stimulation and, in particular, during sadness, which yielded a pattern involving a large exchange of information among frontal channels. On the other hand, happiness was associated with a wider synchronization among frontal and occipital sites, although happiness itself was less synchronized. We conclude that the SI can be successfully applied for studying the dynamic cooperation between cortical areas during emotion responses.

A survey of affective brain computer interfaces: principles, state-of-the-art, and challenges

“…However, the abundance of studies showing the association of brain rhythms with affective responses suggests that aBCI can make use of time-domain, but especially frequencydomain, characteristics of EEG signals to detect affective states. Moreover, further neurophysiological indicators of affective states have been explored, such as functional connectivity between brain regions [98][99][100] or measures of signal complexity [101] that may help to better describe and differentiate affective states. In the next 72 C. Mühl et al…”

The Effect of Binaural Beats on Visuospatial Working Memory and Cortical Connectivity

“…Short-range, or local, phase synchronization within the brain can be interpreted as creating regional “perceptual binding” [17]. Long-range phase synchronization, between regions, is thought to sub-serve motor planning [18, 19], emotion [20, 21], and memory [22–25]. …”

An Exploratory Study on Consumers Attention towards Social Media Advertising: An Electroencephalography Approach

“…For example, Costa et al [10], who were interested in interdependency among different brain regions, collected brain activity while subjects were watching emotional or non-emotional film stimuli. Happiness was reported to create widespread synchronization among frontal and occipital sites.…”