Neurophysiological Manifestation of Memory Based on Wavelet Transform of Electroencephalogram
Evgeniy A. Yumatov, N.A. Karatygin, E.N. Dudnik, A.I. Filipchenko, L. T. Sushkova, R.V. Isakov, V.A. Al- Haidri, O.S Glazachev · Research and Review Insights · 2024
Neurophysiological mechanisms of information perception, memorization and storage including neurochemical and molecular processes have been disclosed.At the same time the key memory extraction mechanisms are still unknown.Information extraction occurs in the subjective, mental sphere of brain activity, which has been not available for investigation by existing neurophysiological methods.In recent years, progressive methods of EEG wavelet transform analysis have been developed.Using this method of EEG processing, we have identified the principal possibility for revealing human brain mental activity.Our study showed a possibility of reliable identification of the recall process during mental answer to a question.Significant differences in the continuous EEG wavelet transform were identified in participants who remembered but did not answer the question in different test intervals: while understanding the question and while formulating mental answer.The most significant differences between the brain ability to reproduce correct mental response and none manifested in the beta range of EEG in the occipital lead O 1 .The data obtained suggest the possibility of identifying the process of information retrieval from memory on the basis of continuous EEG wavelet analysis.Obviously, the mental activity characterizing memory has a real neurophysiological basis and can be studied by objective methods.Further, larger-scale studies in this area will allow objectivizing the study of such important psychophysiological phenomena as memory, consciousness, and attention,which may also be of importance in clinical work.