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Your search keyword '"Lyakhovetskii, Vsevolod"' showing total 43 results
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43 results on '"Lyakhovetskii, Vsevolod"'

2. Test for the Assessment of Crossed and Uncrossed Stereovision Acuity

Author

Volberga, Liva, Adami, Carlo, Strauta, Elizabete, Lyakhovetskii, Vsevolod, Krumina, Gunta, Magjarevic, Ratko, Series Editor, Ładyżyński, Piotr, Associate Editor, Ibrahim, Fatimah, Associate Editor, Lackovic, Igor, Associate Editor, Rock, Emilio Sacristan, Associate Editor, Dekhtyar, Yuri, editor, and Saknite, Inga, editor

Published
2023
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3. Effect of ‘Dry’ Immersion on Visual Illusions

Author

Sosnina, Inna, Lyakhovetskii, Vsevolod, Zelenskiy, Konstantin, Tomilovskaya, Elena, Karpinskaya, Valeria, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Velichkovsky, Boris M., editor, Balaban, Pavel M., editor, and Ushakov, Vadim L., editor

Published
2021
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6. The Aftereffects of Visual Illusions (Ponzo and Müller-Lyer): Hand-Dependent Effects in Sensorimotor Domain

Author

Karpinskaia, Valeria, Lyakhovetskii, Vsevolod, Cherniavskaia, Alla, Shilov, Yuri, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Huang, Tingwen, editor, Lv, Jiancheng, editor, Sun, Changyin, editor, and Tuzikov, Alexander V., editor

Published
2018
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7. Effect of Handedness on Mental Rotation

Author

Krumina, Gunta, Skilters, Jurgis, Gulbe, Annija, Lyakhovetskii, Vsevolod, Hutchison, David, Editorial Board Member, Kanade, Takeo, Editorial Board Member, Kittler, Josef, Editorial Board Member, Kleinberg, Jon M., Editorial Board Member, Mattern, Friedemann, Editorial Board Member, Mitchell, John C., Editorial Board Member, Naor, Moni, Editorial Board Member, Pandu Rangan, C., Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Terzopoulos, Demetri, Editorial Board Member, Tygar, Doug, Editorial Board Member, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Chapman, Peter, editor, Stapleton, Gem, editor, Moktefi, Amirouche, editor, Perez-Kriz, Sarah, editor, and Bellucci, Francesco, editor

Published
2018
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10. The Peculiarities of Perceptual Set in Sensorimotor Illusions

Author

Karpinskaia, Valeria, Lyakhovetskii, Vsevolod, Allakhverdov, Viktor, Shilov, Yuri, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Cheng, Long, editor, Liu, Qingshan, editor, and Ronzhin, Andrey, editor

Published
2016
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12. Perception of length and orientation in dry immersion

Author

Lyakhovetskii, Vsevolod, Chetverikov, A., Zelenskaya, Inna, Tomilovskaya, Elena, Karpinskaia, Valeriia, Lyakhovetskii, Vsevolod, Chetverikov, A., Zelenskaya, Inna, Tomilovskaya, Elena, and Karpinskaia, Valeriia

Abstract

Contains fulltext : 293740.pdf (Publisher’s version ) (Open Access)

Published
2023

18. Effect of hindlimb unloading on recruitment of gastrocnemius medialis muscle during treadmill locomotion in rats

Author

Popov Alexander, Merkulyeva Natalia, Lyakhovetskii Vsevolod, and Musienko Pavel

Subjects
musculoskeletal diseases, Electromyography, business.industry, General Neuroscience, Anatomy, Hindlimb, Knee Joint, musculoskeletal system, medicine.disease_cause, Rats, Weight-bearing, medicine.anatomical_structure, Hindlimb Suspension, Animals, Medicine, Rats, Wistar, Ankle, Treadmill, Muscle, Skeletal, business, Semitendinosus muscle, Locomotion, Gastrocnemius medialis, Step cycle
Abstract

After hindlimb unloading (HU), the adaptive changing of the rat step cycle duration, kinematics of the ankle and knee joints, and duration of one-joint ankle extensor m. soleus (SOL) activity are detected. However, how the activity of their synergist gastrocnemius medialis muscle (GM) changes in locomotion after HU remains unknown. GM is a two-joint muscle that produces both extension and flexion torques at the ankle and knee, respectively, regardless of the step cycle phase. The aim of our study was to assess changes in the flexor and extensor activity of GM and their influence on hindlimb kinematics after HU. The hindlimb kinematics, activity of GM, and SOL were evaluated, and semitendinosus muscle (ST) activity was registered in six Wistar rats in treadmill locomotion before and after HU. The mean EMG of the GM activity, which was co-active with ST burst activity, significantly increased after HU. The mean EMG of the GM activity, which was co-active with SOL activity, was unchanged after HU, but both SOL and GM bursts had a tendency to increase in duration. Hyperextension of the knee joint and the tendency to overextension of the ankle joint in the late of the stance phase were revealed after HU. The results show that the absence of weight bearing leads to an increase only in the flexor activity of GM and does not affect the extensor GM activity. Possible mechanisms of changes in GM activity and joint kinematics after HU are discussed.

Published
2021

19. Alteration of Postural Reactions in Rats with Different Levels of Dopamine Depletion.

Author

Kalinina, Daria S., Lyakhovetskii, Vsevolod A., Gorskii, Oleg V., Shkorbatova, Polina Yu., Pavlova, Natalia V., Bazhenova, Elena Yu., Sysoev, Yurii I., Gainetdinov, Raul R., and Musienko, Pavel E.

Subjects
EXTENSOR muscles, DOPAMINE, FLEXOR muscles, MUSCLE tone, POSTURE
Abstract

Dopamine (DA) is the critical neurotransmitter involved in the unconscious control of muscle tone and body posture. We evaluated the general motor capacities and muscle responses to postural disturbance in three conditions: normal DA level (wild-type rats, WT), mild DA deficiency (WT after administration of α-methyl-p-tyrosine—AMPT, that blocks DA synthesis), and severe DA depletion (DAT-KO rats after AMPT). The horizontal displacements in WT rats elicited a multi-component EMG corrective response in the flexor and extensor muscles. Similar to the gradual progression of DA-related diseases, we observed different degrees of bradykinesia, rigidity, and postural instability after AMPT. The mild DA deficiency impaired the initiation pattern of corrective responses, specifically delaying the extensor muscles' activity ipsilaterally to displacement direction and earlier extensor activity from the opposite side. DA depletion in DAT-KO rats after AMPT elicited tremors, general stiffness, and akinesia, and caused earlier response to horizontal displacements in the coactivated flexor and extensor muscles bilaterally. The data obtained show the specific role of DA in postural reactions and suggest that this experimental approach can be used to investigate sensorimotor control in different dopamine-deficient states and to model DA-related diseases. [ABSTRACT FROM AUTHOR]

Published
2023
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39. The Sensorimotor Evaluation of Perceptual Illusions

Author

Karpinskaia Valeriia and Lyakhovetskii Vsevolod

Subjects
Conscious control, business.industry, Optical illusion, media_common.quotation_subject, Illusion, Visual feedback, Visual illusions, Systems of objects representations (metric and categorical), Task (project management), Perception, Sensorimotor measurements, Metric (mathematics), General Materials Science, Computer vision, Artificial intelligence, business, Categorical variable, Mathematics, Cognitive psychology, media_common
Abstract

The role of conscious control level at the sensorimotor measurements оf different visual illusions (Muller-Lyer, Ponzo, and trapeze) was investigated. We try to vary this level by changing the hand performing the task and by excluding visual feedback. It was shown that hand performing the task affects the performance higher than the presence/absence of visual feedback. The left hand performs the tasks generally more accurate than the right one. We explain our results on the base of hypothesis about existence of different hemisphere-specific systems of objects representations (metric and categorical).

Published
2013

43. Postnatal growth of the lumbosacral spinal segments in cat: Their lengths and positions in relation to vertebrae.

Author

Shkorbatova PY, Lyakhovetskii VA, Veshchitskii AA, Bazhenova EY, Pavlova NV, Musienko PE, and Merkulyeva NS

Subjects
Animals, Female, Cats, Lumbar Vertebrae, Spinal Cord, Sacrum
Abstract

Cat is a prominent model for investigating neural networks of the lumbosacral spinal cord that control locomotor and visceral activity. We previously proposed an integral function, establishing the topographical relationship between the spinal cord segments and vertebrae in adult animals. Here, we investigated the dynamic of this topographical relationship through early and middle periods of development in kittens. We calculated the length of each vertebra relative to the total length of the region from 13th thoracic (T) to the 7th lumbar (L) vertebrae (V) as well as the length of each segment relative to the total region from T13 to the three-dimensional sacral (S) segment. As in our previous work, the length and position of VL2 were used to establish relationships between the characteristics of the segments and vertebrae. Cubic regression reliably approximates the lengths of segments relative to VL2 length. As the cat aged, the relative length of VT13 and VL1 decreased while the relative length of VL5 increased. The relative length of the T13 and L3 segments increased while the relative length of the S1-S2 segments decreased. The T13-L2 segments are descended monotonically relative to the VL1-VL2 border. The L3-S1 segments are also descended, though with more complex dynamics. The positions of the S2-S3 segments remained unchanged. To conclude, different spinal segments displayed different developmental dynamics. The revealed relationship between vertebrae and lumbosacral spinal segments may be helpful for clearly defining stimulation regions to invoke particular functions, both in experimental studies on the spinal cord and clinical treatment., (© 2022 American Association for Anatomy.)

Published
2023
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