Publication

Abstract : Brain the most powerful organ of a human being, manages the central nervous system, interprets and processes the information received from the five sense organs. Electroencephalogram (EEG) is an electrophysiological method to supervise and read the electrical movement of the brain signals especially from the scalp. Olfaction is a chemoreception that forms an impression of smell, through the sensory olfactory system. This paper aims at analyzing the behavior of the human olfactory system towards natural and artificial flavors through a sequence of preprocessing and estimation of power spectral density (PSD) by Welch's method. Power plot analysis was performed to understand the activation of various frequency bands under the influence of odorants. Multiscale Entropy and Fractal Dimension approaches were applied on the preprocessed data to study and compare the nonlinear dynamics of the EEG stimulated by various odorants.