Abstract
This work describes the development of a new approach to NN processing of sleep-related brain electrographic signals, using two sequentially combined unsupervised (Kohonen layer, KNN) and supervised (Widrow-Hoff layer, WHNN) algorithms. Twelve parameters extracted from physiological data (EEG, EMG and EOG, obtained from unrestrained rats through several sleep-waking periods), were first processed by a KNN, that detected different signal patterns. These patterns were further examined by an EEG expert, who identified them as belonging to one of the known sleep-waking stages, or to transitional and/or unknown signal combinations. Selected outputs of the KNN, classified in this way, formed the input vectors to a WHNN, that allowed fast and reliable tracking of changes in these states (both known and newly detected) during prolonged periods of time. Such an approach can represent an important aid for simultaneous exploration, detection and also temporal following of electrographic events along the sleep-waking cycle.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
I. N. Bankman, V. G. Sigillito, R. A. Wise, and P. L. Smith. Feature-based detection of the k-complex wave in the human electroencephalogram using neural networks. IEEE Transactions on Biomedical Engineering, 39 (12): 1305–1310, 1992.
M. A. Carskadon and W. C. Dement. Normal human sleep: an overview. In M.H. Kryger, editor, Principles and Practice of Sleep Medicine, pages 3–13. Saunders, New York, 1988.
A. J. F. Coimbra. Análise computadorizada de sinais bioelétricos. Master’s thesis, Center of Technology, Federal University of Santa Catarina, Brazil, 1994.
A. J. F. Coimbra. Automatic detection of sleep-waking states using Kohonen neural networks. In 1 Congresso tìrasileiro de Redes Neurais, pages 327–331, Itajubá, Minas Gérais, Brasil, 1994.
A. J. F. Coimbra. Electrographic analysis of brain states using neural networks. In World Congress on Medical Physics and Biomedial Engineering, page 463, Rio de Janeiro, Brasil, 1994.
F. M. de Azevedo. Contribution to the study of neural networks in dynamical expert systems. PhD thesis, Institut d’ Informatique, F UN DP, Belgium, 1993.
R. O. Garcia. Técnicas de. inteligencia artificial aplicadas ao apoio à decisáo médica na especialidade de anestesiología. PhD thesis, Center of Technology, Federal University of Santa Catarina, Brazil, 1992.
B. Klöppel. Application of neural networks for eeg analysis. Neuropsychobiology, 29: 39–46, 1994.
B. Klöppel. Classification by neural networks of evoked potentials. Neuropsychobiology, 29: 47–52, 1994.
T. Kohonen. Seif-Organization and Associative Memory. Springer-Verlag, Berlin, 1984.
A. N. Mamelak, J. J. Quattrochi, and A. Hobson. Automated staging of sleep in cats using neural networks. Electroencephalography and Clinical Neurophysiology, 79: 52–61, 1991.
R. Reimäo. Sono: Aspectos atuais. Neurològica, Psiquiatria. Atheneu, Sao Paulo, 1990.
S. Roberts and L. Tarassenko. New method of automated sleep quantification. Medical & Biological Engineering & Computing, 30: 509–517, 1992.
N. Schaltenbrand, R. Lengelle, and J.-P. Macher. Neural networks model: Application to automatic analysis of human sleep. Computers and Biomedical Research, 26: 157–171, 1993.
M. Timsit-Berthier. Approche neurophysiologique des états dépressifs. Psychologie Medicale, 22 (8): 757–763, 1990.
F. Y. Wu and J. D. Slater. Regional cerebral blood flow estimation by neural network-based parametric regression analysis. Int. Journal of Biomedical Computation, 33: 119–128, 1993.
Author information
Authors and Affiliations
Rights and permissions
Copyright information
© 1995 Springer-Verlag/Wien
About this paper
Cite this paper
Coimbra, A.J.F., Marino-Neto, J., de Azevedo, F.M., Freitas, C.G., Barreto, J.M. (1995). Brain Electrographic State Detection Using Combined Unsupervised and Supervised Neural Networks. In: Artificial Neural Nets and Genetic Algorithms. Springer, Vienna. https://doi.org/10.1007/978-3-7091-7535-4_22
Download citation
DOI: https://doi.org/10.1007/978-3-7091-7535-4_22
Publisher Name: Springer, Vienna
Print ISBN: 978-3-211-82692-8
Online ISBN: 978-3-7091-7535-4
eBook Packages: Springer Book Archive