Entropy Analysis of EEG between Alcoholic and Control Subjects during Visual Stimulus Perception

Abstract

The purpose of this paper is to examine the variation in the EEG signal recorded from a group of individual, who were subjected under the effect of alcoholism while comparing them to non-alcoholic or controlled state. For the purpose, EEG from individuals was processed while subjects were perceiving visual picture stimulus from Snodgrass and Vanderwart picture set. A total of 10 trials for each subject have been considered in matched/non-matched condition of picture stimuli. Interestingly, the frontal lobe of the brain has been found to be responsible for instantaneous response against visual stimulus, for the sake of the same, two electrode positions namely Fp1 and Fp2 have been considered for the study. Entropy analyses such as approximate entropy and spectral entropy have been extracted to understand the underlying responses of randomness of the signal due to instantaneous responses from alcoholic/non-alcoholic subjects. Results obtained after proper signal conditioning and feature extraction have shown promising evidences in recorded responses of alcoholics whose values significantly decrease from that of non-alcoholic/control person. Hence, it may be inferred that entropy study may be used for discrimination of subjects under the effect of alcoholism or any other internal/external environmental changes.

Keywords: Approximate entropy, EEG, ERP, spectral entropy, visual stimulus

Cite this Article

Materpal Jakhar, Puneet Mishra, Sunil Singla. Entropy Analysis of EEG between Alcoholic and Control Subjects during Visual Stimulus Perception. Research and Reviews: Journal of Neuroscience. 2016; 6(3): 5–14p.