http://popups.lib.uliege.be/1373-5411/index.php?id=1283 Index terms fr 0 http://popups.lib.uliege.be/1373-5411/index.php?id=1282 The integration between psychological concepts and neurophysiological data pose many epistemic difficulties which create almost unsolvable problems. We used the strategy of reconsidering experimental data and theoretical concepts within the frame of reference of some concepts from Quantum Physics and Chemistry. The model of a particle in a box against a potential barrier proved to be adequate to describe and interpret behavioural data from a neurophysiological viewpoint. Concerning cognitive processes we used the model of atom orbitals and of isolobal fragments to build a model of information processing in the frequency domain. After examining some problems related to anticipation, hypothesis construction and transformation we tested experimentally some of these ideas. Analysis of EEG records using Lee method of cross-correlation with Dirac delta waves repeated periodically yields distinctive spatial distributions of patterns of periodic waveforms for cognitive-affective states- joy, sadness, anxiety, anger and mistrust. It was possible, using exclusively electrophysiological indicators in the frequency domain, to classify adequately a group of 35 subjects that experienced these five cognitive-affective states. Wed, 10 Jul 2024 10:30:11 +0200 Thu, 10 Oct 2024 10:21:33 +0200 http://popups.lib.uliege.be/1373-5411/index.php?id=1282