Subliminal and Supraliminal Effects of Metaphors on Brain Activity

Abstract

Hypnotherapists commonly use metaphors in their suggestions. In hypnotherapy suggestions, metaphors contain a spoken effect. However, until now, metaphors in hypnotherapy speech on brain activity have not been specifically studied. The purpose of this study was to obtain a description of which brain activity appears influenced by different types of metaphors in hypnotherapy speech. The method used in this research is one shot case study. Data collected from one participants in the form of electroencephalograph (EEG) data recording results using hardware from OpenBCI, with 16 electrode channels installed based on the International System 10-20 and the OpenBCI GUI software. We provided stimuli in the form of subliminal metaphors and supraliminal metaphors to the participants. The collected data were then processed and analyzed using the standardized Low-Resolution Electromagnetic Brain Tomography (sLORETA) method using LORETA-Key Software. The sLORETA measurement results will show the active Brodmann Area and Power Spectral Density; then, these results will be interpreted based on brain activity when perceiving metaphorical speech during recording.

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“…Future studies should go beyond this stream of research through the lens of neuroscience. Nurhadi and Saifullah (2021) revealed that both supraliminal and subliminal stimuli can make alpha brainwaves increase and beta brainwaves decrease [ 84 ]. Moreover, everyone’s brains deal with supraliminal and subliminal messages differently [ 84 ].…”

“…Nurhadi and Saifullah (2021) revealed that both supraliminal and subliminal stimuli can make alpha brainwaves increase and beta brainwaves decrease [ 84 ]. Moreover, everyone’s brains deal with supraliminal and subliminal messages differently [ 84 ]. There is still a lot of unknown knowledge to discover.…”