Analysis of functional brain connections for positive-negative emotions using phase locking value

Area of Science:

• Neuroscience
• Cognitive Science
• Psychology

Background:

• Understanding brain networks is crucial for deciphering emotional processing.
• Functional connectivity studies reveal how different brain regions interact during emotional states.

Purpose of the Study:

• To investigate brain network activity during positive and negative emotions using different stimuli (audio, video, audio+video).
• To analyze functional connectivity in theta and alpha bands using phase locking value (PLV).

Main Methods:

• Utilized phase locking value (PLV) to measure functional connectivity in theta and alpha frequency bands.
• Analyzed brain network activity during positive, negative, and neutral emotional states.
• Employed ANOVA to compare stimulus types (audio only, video only, audio+video).

Main Results:

• Demonstrated significant right hemispheric lateralization in phase synchronization for all emotions.
• Identified left frontal electrodes' control over emotional functional connectivity.
• Observed significant inter-hemisphere phase locking between frontal regions.
• Found stimulus types not separable for high-valence emotions.
• PLV values differed significantly for negative/neutral emotions between audio/video and audio+video stimuli.

Conclusions:

• Right hemisphere plays a dominant role in emotional processing.
• Video content appears to be the most impactful component of multimodal emotional stimuli.
• Functional connectivity patterns differ based on emotion valence and stimulus type.