The model of fixed set (for Uznadze’s paradigm) was used to estimate the functional activity of the cortico-thalamic system of selective attention and cortico-hyppocampal system of emotional and volitional activity in second-year medical students with learning difficulties (n = 20). The control group (n = 30) consisted of successfully studying students of the same year. We observed a significant reduction of induced reactions of neocortical EEG α oscillations in response to the facial stimuli or conditioning Go/NoGo signals in underperforming students. This indicates a decrease in the functional activity of the corticothalamic system of selective attention, i.e., weakening of the top–down cognitive control. This disorder is the psychophysiological basis of cognitive difficulties in the learning process. The amplitude of θ-range cortical potentials in underperforming students is significantly higher than that in the control group, i.e., the level of functional activity of the cortico-hippocampal system is higher, which indicates a higher level of stress. These findings make it possible to conclude that psychophysiological laboratory studies should be used as a supporting tool for high school teachers and psychologists during their work with students with learning difficulties.
Human Physiology – Springer Journals
Published: Aug 1, 2017
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