Study of personal qualities and EEG activity in a stop signal paradigm in residents of northern regions

Poster (download) Tatiana Asakhova1, Alexander Saprigyn2, Sergey Tamozhnikov3, Alexandra Karpova4, Natalya Borisova5, Elena Afanaseva6, Alexander Savostyanov71NSU, Novosibirsk, Russia, t.astakhova@g.nsu.ru2State Scientific-Research Institute of Physiology & Basic Medicine, Novosibirsk, Russia, saprigyn@mail.ru3State Scientific-Research Institute of Physiology & Basic Medicine, Novosibirsk, Russia, stam@physiol.ru4North-Eastern Federal University, Yakutsk, Russia, karpova74@list.ru5North-Eastern Federal University, Yakutsk, Russia, borinat@yandex.ru6North-Eastern Federal University, Yakutsk, Russia, eb.afanaseva@mail.ru7State Scientific-Research Institute of Physiology & Basic Medicine, Novosibirsk, Russia ICG SB RAS, Novosibirsk, Russia NSU, Novosibirsk, Russia, alexander.savostyanov@gmail.com It is known that the adaptation to new conditions depends on personality traits. The results obtained showed that the lower level of anxiety and neurotism, the better behavioural control and adaptation. Also, the adaptation level is the lowest right after the move to another place, and it grows by the time along with the growth of behavioral control.

Read More

Delta- and gamma-activity of resting state EEG as one of markers of risk of depressive disorders in migrants of subpolar and polar regions of Siberia

Poster (download) Video (download) Natalya Milakhina1, Sergey Tamozhnikov2, Ekaterina Proshina3, Alexandra Karpova4, Alexander Savostyanov5, Elena Afanaseva61Institute of Cytology and Genetics of SB RAS, Novosibirsk, Russia, tashamilka@mail.ru2State Scientific-Research Institute of Physiology & Basic Medicine, s.tam@physiol.ru3State Scientific-Research Institute of Physiology & Basic Medicine, Novosibirsk, Russia, proshinaea@physiol.ru4North-Eastern Federal University, Yakutsk, Russia, karpova74@list.ru5Institute of Cytology and Genetics of SB RAS, Novosibirsk, Russia, a-sav@mail.ru6North-Eastern Federal University, Yakutsk, Russia, eb.afanaseva@mail.ru It is well known, the conditional rest state activates the functional rest network, including the brain default system (DMN) and the central executive network (CEN). At this stage of research, it can be assumed that both the process of adaptation to the polar climate and new social conditions, and the gradual reduction of the risk of depression among migrants, are due to functional changes within these two brain systems, as well as their functional relationships among themselves. Hypothetically, the increased activity of CEN is associated with a higher level of stress associated with moving to new living conditions

Read More

ELECTROENCEPHALOGRAPHIC CORRELATES OF AN INSIGHT

Poster (download) Gennady Knyazev1, Andrey Bocharov2, Alexander Savostyanov31Institute of Physiology & Basic Medicine, knyazev@physiol.ru2Institute of Physiology & Basic Medicine; Novosibirsk National Research State University, bocharov@physiol.ru3Institute of Physiology & Basic Medicine; Novosibirsk National Research State University, a-sav@mail.ru Insight is a quick, sudden penetration of the solution into the essence of the problem, which may be accompanied by a feeling of \”insight\”, or \” A-ha experience.\” The study of insights in the laboratory was fraught with significant difficulties and the results obtained were quite contradictory.In current study we aimed to identify the dynamics of brain activity in the period, preceding and accompanying the occurrence of insight using the distant association test (TOA) and EEG analysis at the level of sources of electrical activity. A comparison of the options for solving problems that were classified as “an insight” by subjects and those rated as “analytical” revealed a number of differences at behavioral and brain activity levels.Insight solutions were found averagely faster and were mostly more precise. Brain activity in solving problems in an analytical way did not significantly differ from brain activity while no solution was found, which allowed to suggest the presence of an analytical method in the latter case. The brain activity during problems solving using insights was significantly different from unsuccessful trails, and different from trails where an analytical strategy was used.The early stages of problem solution search showed the differences in the delta range in the cortical areas related to the default system and performance control networks. Brain activity, probably associated with the occurrence of an insight solution in the mind, was detected in beta and gamma ranges in the cortical areas of the left hemisphere, which were involved in semantic processes and emotional responses. All in all, the revealed effects showed distinct differences in the dynamics of brain activity with insight and analytical options for finding a solution and testified prospects of this research area. This work was supported by a grant from the Russian Foundation for Basic Research (RFFI) KOMFI No.18-00-00939 and No.18-00-00569.

Read More