Сравнение механизмов фонематического восприятия и внутреннего проговаривания фонем и слогов: ЭЭГ- и фМРТ-исследование

Российский психологический журнал. 2022. Т. 19. № 4. С. 186–210.

Шевченко А. О., Вартанов А. В.

Introduction. The existing speech production schemes do not fully reflect the interaction of speech perception systems and one’s own internal speech. The study is aimed at comparing the connection between internal pronunciation and phonemic perception using psychophysi-ological methods. Methods. Twenty-five people took part in the EEG study. The subjects were offered auditory stimuli, and then it was necessary to internally pronounce the given phonemes or syllables with the same intonation and pronunciation as in external speech. Functional analysis of variance was used to process the results. An fMRI study was also conducted, and 30 healthy right-handed subjects took part in it. The respondents were also offered auditory stimuli, and the background, listening to the material, and listening with subsequent internal pronouncing of a given stimulus was recorded. The results were processed using a program for statistical parametric mapping and then analyzed by group statistics applying a one-sample Student t-test. Results. During the EEG investigation, intervals of significant differences in the structure of the evoked potential of internal pronunciation and phonemic perception were found. During the fMRI study, we obtained data that indicate both the process of phonemic perception and intentional internal pronunciation. Discussion. Differences in brain structures activity during in-ternal pronunciation and perception were analyzed. Based on the data obtained by us and theoretical analysis results, a scheme of phonemic perception and internal pronunciation was proposed. This scheme represents not only the interaction of the processes of perception and speech generation but also shows the influence of articulations on the internal speech process

Keywords: локализация, внутренняя речь, neurolinguistics, нейролингвистика, вызванные потенциалы, localization, фонематическое восприятие, фонемы, speech fMRI, speech EEG, evoked potentials, internal speech, subvocalisation, phoneme, syllable, phonemic perception, фМРТ речи, ЭЭГ речи, субвокализация, слоги