Diskussion:Neoos

• Henz, D. (2019, September). ULTRASOUND STIMULATION ON THE SKIN STIMULATES EEG THETA ACTIVITY IN SPEECH-RELATED BRAIN AREAS. In PSYCHOPHYSIOLOGY, POSTER 2-072 (Vol. 56, pp. S85-S85). 111 RIVER ST, HOBOKEN 07030-5774, NJ USA: WILEY.
• Diana Henz University of MainzSELECTIVE STIMULATION OF EEG THETA, ALPHA, AND BETA ACTIVITY BY A FREQUENCY- BASED THERAPEUTICAL APPROACH, Descriptors: frequency- based therapy, EEG, alpha power

Effects of brain stimulation on brain activity, cognitive functions and the mental state have been studied extensively. To date, less is known on the effects of frequency- based therapeutical approaches that do not use transcranial electrical or magnetic stimulation but rely on application of natural frequencies. In the present study, we investigated the effects of the frequencybased therapeutical approach Colorbox12 that uses application of distinct sequences of colors and natural auditive frequencies on EEG brain activity and the mental state. Subjects were exposed to distinct frequencies in three experimental conditions (theta, alpha, beta), and one control condition (no frequency) by using the Colorbox12 system. High- density EEG was recorded continuously from 128 electrodes before, during, and after each experimental condition. Each experimental condition was tested for 10 minutes. Results on spontaneous EEG showed increased overall alpha power during and after application of the alpha frequency with subjects reporting increased relaxation. Overall theta and alpha activity increased when the theta frequency was applied. Here, subjects reported increased relaxation. Beta activity increased in frontal areas during application of the beta frequency with subjects reporting increased wakefulness and concentration. We discuss the results and possible fields of application in terms of activation of distinct neural circuits by application of the frequency- based therapeutical approach tested in the present study.