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Annu Int Conf IEEE Eng Med Biol Soc

Title:		3D characterization and trend analysis of scents from EEG recordings of repeated scent exposure
Author(s):		Sieow BF; Ser W; Ho MW; Lwin MO; Kwok K;
Address:
Journal Title:		Annu Int Conf IEEE Eng Med Biol Soc
Year:		2013
Volume:		2013
Issue:
Page Number:		1330 - 1333
DOI:		10.1109/EMBC.2013.6609754
ISSN/ISBN:		2694-0604 (Electronic) 2375-7477 (Linking)
Abstract:		"Scent plays an important role in influencing the brain and has been commonly used in psychological research. Much of such research has been conducted without the use of electroencephalography (EEG) to measure the response of the human brain to scent stimulus. Recent studies have involved the use of EEG to perform comparative studies on how different scents can affect brain activity. However, little has been done to analyze the trend of brain activity when a subject is repeatedly exposed to the same scent. This paper discusses the use of 4 features - Entropy Difference, Entropy Ratio, Entropy Time and Root Mean Square (RMS) to perform trend analysis of EEG signals in a repeated scent-exposure setting. The results show that different types of scents cause the brain to be stimulated at different degrees for each repeated exposure, giving rise to different trend patterns. It is also observed that the 4 features give similar trends for the same scent. This similarity allows us to combine the 4 features by forming a feature vector and plotting them in 3 dimensional (3D) space, using 3 repeated scent exposures as the axes. The region of space where the feature vector lies is represented by an ellipsoid, which can be used to characterize a particular scent. Unlike previous work, which did not characterize scent from EEG recordings, this paper investigates the different trends of scent after its repeated exposure to the human subject and by using the 3D representation to characterize the scent"
Keywords:		Adult Algorithms Brain/*physiology Cananga/chemistry/metabolism *Electroencephalography Entropy Eucalyptus/chemistry/metabolism Humans Male Volatile Organic Compounds/*analysis Young Adult;
Notes:		"MedlineSieow, Brendan Fu-Long Ser, Wee Ho, Melvin Weiyuan Lwin, May Oo Kwok, Kenneth eng Research Support, Non-U.S. Gov't 2013/10/11 Annu Int Conf IEEE Eng Med Biol Soc. 2013; 2013:1330-3. doi: 10.1109/EMBC.2013.6609754"