Postural Control Features of Field-Dependent and Field-Independent Subjects in the Absence of Visual and Audio Information

Timofeeva, O. P.; Andreeva, I. G.

doi:10.1134/s0362119721040150

Cited by 5 publications

(3 citation statements)

References 6 publications

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“…The results of a study on subjects who were unable to stand due to severe SC trauma showed that with tES of the SC at the level of the T11 or L1 vertebrae (above the L1-L4 spinal segments [4]), all patients (N = 15) could independently control their vertical posture with minimal external support from the knees or pelvis, and some of them (N = 7)-without any support [5]. Thus, in the absence of supraspinal influences, when the possibility of regulation by sensory systems and processes occurring in the brain is limited, activation of Life 2023, 13,1909 2 of 14 the spinal networks of the SC by stimulation of the L1-L4 spinal segments makes it possible to effectively control the vertical posture and support the body weight.…”

Section: Spinal Cord Stimulation As a Tool To Study Postural Controlmentioning

confidence: 99%

“…Life 2023, 13,1909 12 of 14 We have shown that tES of the spinal cord at the L1-L2 vertebrae reduces postural control during quiet standing when the "equilibrium" task is virtually absent. Omofuma and colleagues [25,26] stimulated a similar level of the spinal cord and tested balance control during trunk perturbations when the "equilibrium" task was solved simultaneously with the "posture" task.…”

Section: Limitationsmentioning

confidence: 99%

“…Because postural regulation is different in subjects with different cognitive styles, the effects of stimulation on FD and FI subjects were analyzed separately. Because the effect of cognitive style on the coordination of body segments in postural control is clearly manifested in the absence of visual and sound stimuli [ 12 , 13 ], the study was conducted in a soundproof chamber, and participants were asked to keep their eyes closed.…”

Section: Introductionmentioning

confidence: 99%

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Posture of Healthy Subjects Modulated by Transcutaneous Spinal Cord Stimulation

Shamantseva,

Timofeeva,

Gvozdeva

et al. 2023

Life

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Transcutaneous electrical stimulation of the spinal cord is used to restore locomotion and body weight support in patients with severe motor disorders. We studied the effects of this non-invasive stimulation on postural control in healthy subjects. Stimulation at the L1–L2 vertebrae was performed to activate the extensor muscles of the lower limbs. Because postural regulation depends on the cognitive style, the effects of the stimulation were analyzed separately in field-dependent (FD) and field-independent (FI) participants. During the study, FD and FI participants (N = 16, 25 ± 5 years, all right dominant leg) stood on a force platform in a soundproof chamber with their eyes closed. Stimulation was applied in the midline between the L1 and L2 vertebrae or over the left or right dorsal roots of the spinal cord; under the control condition, there was no stimulation. Stimulation destabilized posture in healthy subjects, whereas patients with movement disorders usually showed an improvement in postural control. In the FD participants, left dorsal root and midline stimulation increased several postural parameters by up to 30%. Dorsal root stimulation on the side of the supporting leg reduced postural control, while stimulation on the side of the dominant leg did not. No significant changes were observed in the FI participants.

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Section: Spinal Cord Stimulation As a Tool To Study Postural Controlmentioning

confidence: 99%