| Abstrakt: |
Introduction: Thermal feedback technologies have been explored in human- computer interaction to provide secondary information and enhance the overall user experience. Unlike fast-response hapticmodalities such as vibration and force feedback, the human brain's processes associated with thermal feedback are not fully understood. Methods: In this study, we utilize electroencephalography (EEG) brain imaging to systematically examine the neural correlates associated with a wide range of thermal stimuli, including 9, 15, 32, and 42C, during active touch at the fingertip. A custom experimental setup is developed to provide thermal stimulation at the desirable temperature levels. A total of 30 participants are recruited to experience the four levels of thermal stimulation by actively touching a thermal stimulation unit with the index finger while recording brain activities via EEG. Time-frequency analysis and power spectral density (PSD) of the EEG data are utilized to analyze the delta, theta, alpha, beta, and gamma frequency bands. Results: The results show that the delta, theta, and alpha PSDs of 9 and 15C stimuli are significantly higher than the PSDs of 32 and 42C in the right frontal area during the early stage of the stimulation, from 282ms up to 1,108ms (One- way ANOVA test, Holm-Bonferroni correction, p < 0.05). No significant di [ABSTRACT FROM AUTHOR] |
