Abstract
Aim. To estimate psychophysiological changes during workspace virtualization.Materials and Methods. We evaluated the psychophysiological profile of 10 healthy right-handed males aged 25 to 45 years before, during and after the working in a virtual reality (VR) headset. All participants had higher education, normal or corrected to normal vision, and were experienced computer users. Psychometric testing included a neurological examination, assessment of functional and feedback-related brain activity (reaction time, errors, and missed signals) and attention span, quantification of processed symbols in the 1st and 4th minutes of Bourdon test, analysis of short-term memory (10 words, 10 numbers and 10 meaningless syllables memorization) and spatial perception, and multi-channel electroencephalography recording in rest.Results. Deterioration of psychometric indicators after a cognitive load in a VR headset was documented only in the most difficult tasks: the number of errors increased by 93% in the brain performance test and by 65% in the attention distribution test. The analysis of electroencephalography data showed that the delta rhythm and theta1 rhythm activity decreased by 28 and 13%, respectively, after working in a VR headset as compared to baseline values, while alpha1 rhythm activity increased by 96%. Probably, the observed electroencephalography changes corresponded to the patterns of brain activation associated with cognitive load and the resulting fatigue.Conclusions. We developed a suitable approach for the psychometric testing before and after working in VR headset, which demonstrated general tolerance and acceptable subjective difficulties to VR load.
Highlights
Апробация методики оценки психофизиологического состояния оператора при виртуализации рабочего информационного пространства на основе психофизиологических и ЭЭГ параметров
Deterioration of psychometric indicators after a cognitive load in a virtual reality (VR) headset was documented only in the most difficult tasks: the number of errors increased by 93% in the brain performance test and by 65% in the attention distribution test
The analysis of electroencephalography data showed that the delta rhythm and theta1 rhythm activity decreased by 28 and 13%, respectively, after working in a VR headset as compared to baseline values, while alpha1 rhythm activity increased by 96%
Summary
Апробация методики оценки психофизиологического состояния оператора при виртуализации рабочего информационного пространства на основе психофизиологических и ЭЭГ параметров. Для оценки исходного и постнагрузочного психофизиологического состояния испытуемых при виртуализации рабочего информационного пространства в течение эксперимента последовательно проводился ряд исследований. Следом производилось ЭЭГ исследование в состоянии покоя с закрытыми и открытыми глазами в течение 5 минут для каждого состояния и расширенное выходное нейрофизиологическое тестирование, включающее те же тестовые методики, что и на входе в исследование, за исключением тестов кратковременной памяти (в связи с малой вариабельностью их результатов на протяжении коротких интервалов времени).
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