Российская академия наук


NEUROPHYSIOLOGICAL CORRELATES of sensorimotor STUDENT's behaviour during the performance computer version V.M. Rusalov's inquirer “STRUCTURE of TEMPERAMENT“



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NEUROPHYSIOLOGICAL CORRELATES of sensorimotor STUDENT's behaviour during the performance computer version V.M. Rusalov's inquirer “STRUCTURE of TEMPERAMENT“

Sulin V.U., Gulyaeva S.I. , Vashanov G.A.

Voronezh State University, Voronezh, Russia, sulinvu@mail.ru


The data were collected from 20 subjects (5 males, 15 females, the mean age is 20.7±0.4). During this investigation the computer version of Rusalov’s temperament inquirer, which was worked out on our department, was used to test participants.

Behavioral (answer and time selection), electrooculographic (EOG, 2 electrodes in the lateral corners of the eyes), electromyographic (EMG active electrode on the index finger) and electrocardiographic (ECG, 2 standard lead) indicators were registered. EOG, EMG and ECG were recorded with multi-function computer complex "Neuron-spectr 4P", software was worked out by "Neurosoft" (ADC sampling rate of 500 Hz, with a frequency filter 0.05 Hz and 200 Hz). Video recording was carried out by using two web-cameras and specially designed programs with subsequent analysis of hands and the head movements of surveyed during testing. Equivalence stationery and computer version OST were tested previously (Sulin V.U., 2012, 2010).

Based on the analysis of EOG parameters, it was established that during reading the question on the display, specific amplitude of microsaccades was 5-15 mV, followed by rapid displacement of the eyeballs (macrosaccades) to the region of the buttons with choice options. In most cases, it is possible to determine probable subject's answers before the beginning of motor response, with a high degree of reliability.

After analyzing parameters of EOG, EMG and behavior of students, the time intervals of reading the question and select options (decision-making) were calculated. A regression analysis was performed, and the specific features that characterize the speed of reading questions by respondents were revealed.

It was found that the time distribution histogram of decision-making (time needed to choice the answer) are bimodal with dominance in the range of 300-500 ms and 2000 ms. Bimodal character of time distribution histogram of decision-making gives grounds to assume that only 40-50% of respondents choose an alternative response without thinking (as it is required by prior instruction).


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