Biomedical application of wavelets: analysis of electroencephalograph signals for monitoring depth of anesthesia

Agostino Abbate; A. Nayak; J. Koay; R. J. Roy; Pankaj K. Das

doi:10.1117/12.236014

22 March 1996 Biomedical application of wavelets: analysis of electroencephalograph signals for monitoring depth of anesthesia

Agostino Abbate, A. Nayak, J. Koay, R. J. Roy, Pankaj K. Das

Author Affiliations +

Proceedings Volume 2762, Wavelet Applications III; (1996) https://doi.org/10.1117/12.236014
Event: Aerospace/Defense Sensing and Controls, 1996, Orlando, FL, United States

Abstract

The wavelet transform (WT) has been used to study the nonstationary information in the electroencephalograph (EEG) as an aid in determining the anesthetic depth. A complex analytic mother wavelet is utilized to obtain the time evolution of the various spectral components of the EEG signal. The technique is utilized for the detection and spectral analysis of transient and background processes in the awake and asleep states. It can be observed that the response of both states before the application of the stimulus is similar in amplitude but not in spectral contents, which suggests a background activity of the brain. The brain reacts to the external stimulus in two different modes depending on the state of consciousness of the subject. In the case of awake state, there is an evident increase in response, while for the sleep state a reduction in this activity is observed. This analysis seems to suggest that the brain has an ongoing background process that monitors external stimulus in both the sleep and awake states.

Citation Download Citation

Agostino Abbate, A. Nayak, J. Koay, R. J. Roy, and Pankaj K. Das "Biomedical application of wavelets: analysis of electroencephalograph signals for monitoring depth of anesthesia", Proc. SPIE 2762, Wavelet Applications III, (22 March 1996); https://doi.org/10.1117/12.236014

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available