Psychophysiological mechanisms of color-emotional semantic integrationстатьяТезисы
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 27 мая 2015 г.
Аннотация:Background: Study of interaction between color and emotion is an important problem in modern cognitive psychophysiology. Developed by R.N.Shepard multidimensional analysis of perceptive and semantic spaces is a common research strategy for revealing structure of color and emotion. Color and emotion spaces were extensively studied in the ‘Vector psychophysiology’ school of thoughts of prominent Russian academician E.N.Sokolov (2010). Original spherical neurocybernetics model of color or emotion discrimination were developed separately but multidimensional psychophysiological structure of color-emotion integration was never studied. We have researched this integration at the semantic level. Methods: Subjects were presented with 20 Russian words (10 basic colors and 10 basic emotions) shown consequently in quasirandom order. Total 20*(20-1) = 380 changes of words in each pass were presented (‘full matrix pass’). In different experimental series we separately recorded: 1) Subjective semantic differences in every 380 changes at common 1-9 points scale; 2) Complex reaction time in the categorization task (subject had to determine whether the color/emotion category of a new stimuli is the same as the previous one); 3) 600-ms visual evoked potentials (16-channels EEG) to abrupt 380 changes of stimuli with analysis of amplitudes and latencies of peaks. 5 full matrix passes were applied in psychophysical series and 100 passes were applied in psychophysiological series. 45 subjects totally participated in the study. Multidimensional scaling of full matrices of differences was conducted. Results: 1. The global structure of the integral color-emotional space derived from 20x20 semantic matrix and built on the base of common scale of subjective differences is characterized by two integral axes and has spherical nature (which conforms to Sokolovian spherical vector model). Yellow-blue and red-green opponent color systems are located orthogonally as well as evaluation and potency-activity emotional systems. The simultaneous representation of color and emotional systems with a common center inside common circle indicates the existence of deep color-emotional bases of verbal categorization. 2. Categorization RT-matrix which represents indirect semantics differences is partially correlates with overt subjective differences. Significant correlation was found in 10x10 emotion-color submatrix of whole 20x20 matrix. 3. It is possible to locate specific cortical areas, peaks and latencies inside VEP-matrix which significantly correlate with matrix of subjective differences. These multiple spatial-temporal loci represent psychophysiological mechanisms of process of color-emotional semantic integration. Conclusion: Sokolovian “Vector psychophysiology” is a useful research paradigm for studying multidimensional nature of color-emotional semantic integration.