Upweighting lumbar proprioception through prolonged electrical vestibular stimulation: an application of sensory reweighting

Y.C. Li; Koen Lemaire; Sjoerd Bruijn; Jaap van Dieen

Abstract

Postural control relies on multisensory information, which is integrated based on the
relative reliability of the sources, in a process known as ‘sensory reweighting’. Lowback pain (LBP) reduces the lumbar proprioceptive contribution to postural control. As
such, LBP patients may increase dependence on other modalities, such as vestibular
signals. Attenuated response to prolonged electrical vestibular stimulation (EVS),
which induces illusions of self-movement, has been reported. This could temporally
up-weight the lumbar proprioception. Here, we investigated reweighting between
vestibular information and lumbar proprioception during sitting in healthy participants.
Ten participants sat upright on a stool placed on a force plate, with their hands hanging
freely at the sides and their feet on the ground with a 90-degree knee flexion. Trunk
kinematics were measured with markers on the back at the T6 level. Unilateral muscle
vibration (80 Hz) on the left paraspinal muscle at the L2 level was applied, with each
vibration round consisting of ten times 5-second vibrations with 10-second rest
intervals. Vibrations were applied at 0 (MV1), 10 (MV2) and 20 (MV3) minutes during
EVS, and 5 minutes before (Pre-MV) and after EVS (Post-MV). Stochastic EVS (2 to
25 Hz) was applied for entire 30 minutes. The weight of the vestibular signal was
quantified as the gain between EVS and horizontal ground reaction force (GRF) in the
medio-lateral direction. Although the EVS-GRF gain showed no decrease over 30
mintues, trunk roll in Post-MV (0.28 ± 0.17 degrees) increased compared to Pre-MV
(0.25 ± 0.17 degrees, p = 0.15). The presence of EVS significantly increased trunk roll
(Pre-MV vs MV3, p = 0.04). In sum, prolonged EVS temporarily up-weights the lumbar
proprioception in healthy participants. However no post-stimulation effect was found
after 5 minutes of rest. These findings suggest that prolonged EVS could potentially
be applied in the treatment for LBP.

Original language	English
Pages	37
Number of pages	63
Publication status	Published - Sept 2024
Event	MOTOR CONTROL 2024: From theory to applications - Wisla, Poland Duration: 18 Sept 2024 → 20 Sept 2024 https://motorcontrol.pl/

Conference

Conference	MOTOR CONTROL 2024
Country/Territory	Poland
City	Wisla
Period	18/09/24 → 20/09/24
Internet address	https://motorcontrol.pl/

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https://motorcontrol.pl/wp-content/uploads/2024/09/MC202024-BOOK-OF-ABSTRACTS-Participant_v4.pdf

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Cite this

@conference{f42555c9396945618df710418ab7370d,

title = "Upweighting lumbar proprioception through prolonged electrical vestibular stimulation: an application of sensory reweighting",

abstract = "Postural control relies on multisensory information, which is integrated based on the relative reliability of the sources, in a process known as {\textquoteleft}sensory reweighting{\textquoteright}. Lowback pain (LBP) reduces the lumbar proprioceptive contribution to postural control. As such, LBP patients may increase dependence on other modalities, such as vestibular signals. Attenuated response to prolonged electrical vestibular stimulation (EVS), which induces illusions of self-movement, has been reported. This could temporally up-weight the lumbar proprioception. Here, we investigated reweighting between vestibular information and lumbar proprioception during sitting in healthy participants. Ten participants sat upright on a stool placed on a force plate, with their hands hanging freely at the sides and their feet on the ground with a 90-degree knee flexion. Trunk kinematics were measured with markers on the back at the T6 level. Unilateral muscle vibration (80 Hz) on the left paraspinal muscle at the L2 level was applied, with each vibration round consisting of ten times 5-second vibrations with 10-second rest intervals. Vibrations were applied at 0 (MV1), 10 (MV2) and 20 (MV3) minutes during EVS, and 5 minutes before (Pre-MV) and after EVS (Post-MV). Stochastic EVS (2 to 25 Hz) was applied for entire 30 minutes. The weight of the vestibular signal was quantified as the gain between EVS and horizontal ground reaction force (GRF) in the medio-lateral direction. Although the EVS-GRF gain showed no decrease over 30 mintues, trunk roll in Post-MV (0.28 ± 0.17 degrees) increased compared to Pre-MV (0.25 ± 0.17 degrees, p = 0.15). The presence of EVS significantly increased trunk roll (Pre-MV vs MV3, p = 0.04). In sum, prolonged EVS temporarily up-weights the lumbar proprioception in healthy participants. However no post-stimulation effect was found after 5 minutes of rest. These findings suggest that prolonged EVS could potentially be applied in the treatment for LBP.",

author = "Y.C. Li and Koen Lemaire and Sjoerd Bruijn and \{van Dieen\}, Jaap",

year = "2024",

month = sep,

language = "English",

pages = "37",

note = "MOTOR CONTROL 2024 : From theory to applications ; Conference date: 18-09-2024 Through 20-09-2024",

url = "https://motorcontrol.pl/",

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TY - CONF

T1 - Upweighting lumbar proprioception through prolonged electrical vestibular stimulation: an application of sensory reweighting

AU - Li, Y.C.

AU - Lemaire, Koen

AU - Bruijn, Sjoerd

AU - van Dieen, Jaap

PY - 2024/9

Y1 - 2024/9

N2 - Postural control relies on multisensory information, which is integrated based on the relative reliability of the sources, in a process known as ‘sensory reweighting’. Lowback pain (LBP) reduces the lumbar proprioceptive contribution to postural control. As such, LBP patients may increase dependence on other modalities, such as vestibular signals. Attenuated response to prolonged electrical vestibular stimulation (EVS), which induces illusions of self-movement, has been reported. This could temporally up-weight the lumbar proprioception. Here, we investigated reweighting between vestibular information and lumbar proprioception during sitting in healthy participants. Ten participants sat upright on a stool placed on a force plate, with their hands hanging freely at the sides and their feet on the ground with a 90-degree knee flexion. Trunk kinematics were measured with markers on the back at the T6 level. Unilateral muscle vibration (80 Hz) on the left paraspinal muscle at the L2 level was applied, with each vibration round consisting of ten times 5-second vibrations with 10-second rest intervals. Vibrations were applied at 0 (MV1), 10 (MV2) and 20 (MV3) minutes during EVS, and 5 minutes before (Pre-MV) and after EVS (Post-MV). Stochastic EVS (2 to 25 Hz) was applied for entire 30 minutes. The weight of the vestibular signal was quantified as the gain between EVS and horizontal ground reaction force (GRF) in the medio-lateral direction. Although the EVS-GRF gain showed no decrease over 30 mintues, trunk roll in Post-MV (0.28 ± 0.17 degrees) increased compared to Pre-MV (0.25 ± 0.17 degrees, p = 0.15). The presence of EVS significantly increased trunk roll (Pre-MV vs MV3, p = 0.04). In sum, prolonged EVS temporarily up-weights the lumbar proprioception in healthy participants. However no post-stimulation effect was found after 5 minutes of rest. These findings suggest that prolonged EVS could potentially be applied in the treatment for LBP.

AB - Postural control relies on multisensory information, which is integrated based on the relative reliability of the sources, in a process known as ‘sensory reweighting’. Lowback pain (LBP) reduces the lumbar proprioceptive contribution to postural control. As such, LBP patients may increase dependence on other modalities, such as vestibular signals. Attenuated response to prolonged electrical vestibular stimulation (EVS), which induces illusions of self-movement, has been reported. This could temporally up-weight the lumbar proprioception. Here, we investigated reweighting between vestibular information and lumbar proprioception during sitting in healthy participants. Ten participants sat upright on a stool placed on a force plate, with their hands hanging freely at the sides and their feet on the ground with a 90-degree knee flexion. Trunk kinematics were measured with markers on the back at the T6 level. Unilateral muscle vibration (80 Hz) on the left paraspinal muscle at the L2 level was applied, with each vibration round consisting of ten times 5-second vibrations with 10-second rest intervals. Vibrations were applied at 0 (MV1), 10 (MV2) and 20 (MV3) minutes during EVS, and 5 minutes before (Pre-MV) and after EVS (Post-MV). Stochastic EVS (2 to 25 Hz) was applied for entire 30 minutes. The weight of the vestibular signal was quantified as the gain between EVS and horizontal ground reaction force (GRF) in the medio-lateral direction. Although the EVS-GRF gain showed no decrease over 30 mintues, trunk roll in Post-MV (0.28 ± 0.17 degrees) increased compared to Pre-MV (0.25 ± 0.17 degrees, p = 0.15). The presence of EVS significantly increased trunk roll (Pre-MV vs MV3, p = 0.04). In sum, prolonged EVS temporarily up-weights the lumbar proprioception in healthy participants. However no post-stimulation effect was found after 5 minutes of rest. These findings suggest that prolonged EVS could potentially be applied in the treatment for LBP.

M3 - Abstract

SP - 37

T2 - MOTOR CONTROL 2024

Y2 - 18 September 2024 through 20 September 2024

ER -