A Study about Multi-sensory Stimulation of Sound Fluctuation and Color Temperature Effects on Amenity and Physical Stability

Abstract

In this study, electroencephalogram (EEG) and heart rate variability (HRV) were compared and analyzed in an environmental test room to examine the effects of stimulation of sound fluctuation and color temperature on amenity and physical stability. The temperature of the environmental test room was 25 (°C), relative humidity (RH) was 50 (%), air current speed was 0.02 (m/s), and illuminance was 1000 (lux). Different single sensory stimulation conditions were introduced such as sound source of a = 1.106 fluctuation rhythm and lighting of the color red before exposure. Moreover, different fluctuating multi- sensory stimulation conditions such as sound source of a = 1.106 fluctuation rhythm and lighting of the color red were also introduced. Upon multi-sensory stimulation using a sound source of a = 1.106 fluctuation rhythm and red color lighting, a relative Sα wave, relative Mβ wave, somatosensory-evoked fields (SEF50), and st andard deviation of all the normal RR intervals (SDNN) were revitalized. Moreover, the α wave asymmetry index, mean heart rate (HRT), stress index, and fatigue degree exhibited a decline both before single-sensory stimulation and after the multi-sensory stimulation. It was found that the effects of fluctuating multi-sensory stimulation of sound source a = 1.106 fluctuation rhythm and red color lighting increased neuro-energy such as amenity, productivity, and concentration.