Publication

Reduced cortical activity during maximal bilateral contractions of the index finger

Post, M., van Duinen, H., Steens, A., Renken, R., Kuipers, B., Maurits, N. & Zijdewind, I., Mar-2007, In : Neuroimage. 35, 1, p. 16-27 12 p.

Research output: Contribution to journalArticleAcademicpeer-review

APA

Post, M., van Duinen, H., Steens, A., Renken, R., Kuipers, B., Maurits, N., & Zijdewind, I. (2007). Reduced cortical activity during maximal bilateral contractions of the index finger. Neuroimage, 35(1), 16-27. https://doi.org/10.1016/j.neuroimage.2006.11.050

Author

Post, Marijn ; van Duinen, Hiske ; Steens, Anneke ; Renken, Remco ; Kuipers, Bart ; Maurits, Natasha ; Zijdewind, Inge. / Reduced cortical activity during maximal bilateral contractions of the index finger. In: Neuroimage. 2007 ; Vol. 35, No. 1. pp. 16-27.

Harvard

Post, M, van Duinen, H, Steens, A, Renken, R, Kuipers, B, Maurits, N & Zijdewind, I 2007, 'Reduced cortical activity during maximal bilateral contractions of the index finger', Neuroimage, vol. 35, no. 1, pp. 16-27. https://doi.org/10.1016/j.neuroimage.2006.11.050

Standard

Reduced cortical activity during maximal bilateral contractions of the index finger. / Post, Marijn; van Duinen, Hiske; Steens, Anneke; Renken, Remco; Kuipers, Bart; Maurits, Natasha; Zijdewind, Inge.

In: Neuroimage, Vol. 35, No. 1, 03.2007, p. 16-27.

Research output: Contribution to journalArticleAcademicpeer-review

Vancouver

Post M, van Duinen H, Steens A, Renken R, Kuipers B, Maurits N et al. Reduced cortical activity during maximal bilateral contractions of the index finger. Neuroimage. 2007 Mar;35(1):16-27. https://doi.org/10.1016/j.neuroimage.2006.11.050


BibTeX

@article{7bdfd1476861458dbb11fbe228e08603,
title = "Reduced cortical activity during maximal bilateral contractions of the index finger",
abstract = "The bilateral deficit refers to the phenomenon in which homologous muscles produce per muscle less force when contracting simultaneously than when contracting individually. The mechanism underlying the bilateral deficit is still unknown, but the most likely cause is a decline in the activation of motor units during bilateral contractions. In the present study, we used functional magnetic resonance imaging (fMRI) to measure the degree of brain activity during unilateral and bilateral maximal contractions in combination with force and EMG measurements. Subjects performed, in a semi-randomized order, maximal isometric contractions (MVC) with the right index finger, the left index finger and with both fingers simultaneously. During the task, brain activation was measured with a 3 T MR scanner, in combination with force and EMG recordings. The most important activated areas in the brain during the contractions were the sensorimotor cortex (precentral and postcentral gyrus), cerebellum, premotor cortex and supplementary motor area. During bilateral contractions, a significant decline in force and EMG values was found and detailed analysis of the brain activation data showed that this decline was accompanied with a significant decline in the activation of the precentral gyrus. This result suggests that the bilateral decline is the resultant of a decline in input to the primary motor area and shows that the main source of the bilateral deficit lies upstream of the primary motor cortex. (c) 2006 Elsevier Inc. All rights reserved.",
keywords = "SUPPLEMENTARY MOTOR AREA, BIMANUAL COORDINATION, MUSCLE ACTIVATION, ISOMETRIC FORCE, FUNCTIONAL MRI, LEG EXTENSION, YOUNG-ADULTS, MEDIAL WALL, DEFICIT, STRENGTH",
author = "Marijn Post and {van Duinen}, Hiske and Anneke Steens and Remco Renken and Bart Kuipers and Natasha Maurits and Inge Zijdewind",
year = "2007",
month = mar,
doi = "10.1016/j.neuroimage.2006.11.050",
language = "English",
volume = "35",
pages = "16--27",
journal = "Neuroimage",
issn = "1053-8119",
publisher = "ACADEMIC PRESS INC ELSEVIER SCIENCE",
number = "1",

}

RIS

TY - JOUR

T1 - Reduced cortical activity during maximal bilateral contractions of the index finger

AU - Post, Marijn

AU - van Duinen, Hiske

AU - Steens, Anneke

AU - Renken, Remco

AU - Kuipers, Bart

AU - Maurits, Natasha

AU - Zijdewind, Inge

PY - 2007/3

Y1 - 2007/3

N2 - The bilateral deficit refers to the phenomenon in which homologous muscles produce per muscle less force when contracting simultaneously than when contracting individually. The mechanism underlying the bilateral deficit is still unknown, but the most likely cause is a decline in the activation of motor units during bilateral contractions. In the present study, we used functional magnetic resonance imaging (fMRI) to measure the degree of brain activity during unilateral and bilateral maximal contractions in combination with force and EMG measurements. Subjects performed, in a semi-randomized order, maximal isometric contractions (MVC) with the right index finger, the left index finger and with both fingers simultaneously. During the task, brain activation was measured with a 3 T MR scanner, in combination with force and EMG recordings. The most important activated areas in the brain during the contractions were the sensorimotor cortex (precentral and postcentral gyrus), cerebellum, premotor cortex and supplementary motor area. During bilateral contractions, a significant decline in force and EMG values was found and detailed analysis of the brain activation data showed that this decline was accompanied with a significant decline in the activation of the precentral gyrus. This result suggests that the bilateral decline is the resultant of a decline in input to the primary motor area and shows that the main source of the bilateral deficit lies upstream of the primary motor cortex. (c) 2006 Elsevier Inc. All rights reserved.

AB - The bilateral deficit refers to the phenomenon in which homologous muscles produce per muscle less force when contracting simultaneously than when contracting individually. The mechanism underlying the bilateral deficit is still unknown, but the most likely cause is a decline in the activation of motor units during bilateral contractions. In the present study, we used functional magnetic resonance imaging (fMRI) to measure the degree of brain activity during unilateral and bilateral maximal contractions in combination with force and EMG measurements. Subjects performed, in a semi-randomized order, maximal isometric contractions (MVC) with the right index finger, the left index finger and with both fingers simultaneously. During the task, brain activation was measured with a 3 T MR scanner, in combination with force and EMG recordings. The most important activated areas in the brain during the contractions were the sensorimotor cortex (precentral and postcentral gyrus), cerebellum, premotor cortex and supplementary motor area. During bilateral contractions, a significant decline in force and EMG values was found and detailed analysis of the brain activation data showed that this decline was accompanied with a significant decline in the activation of the precentral gyrus. This result suggests that the bilateral decline is the resultant of a decline in input to the primary motor area and shows that the main source of the bilateral deficit lies upstream of the primary motor cortex. (c) 2006 Elsevier Inc. All rights reserved.

KW - SUPPLEMENTARY MOTOR AREA

KW - BIMANUAL COORDINATION

KW - MUSCLE ACTIVATION

KW - ISOMETRIC FORCE

KW - FUNCTIONAL MRI

KW - LEG EXTENSION

KW - YOUNG-ADULTS

KW - MEDIAL WALL

KW - DEFICIT

KW - STRENGTH

U2 - 10.1016/j.neuroimage.2006.11.050

DO - 10.1016/j.neuroimage.2006.11.050

M3 - Article

VL - 35

SP - 16

EP - 27

JO - Neuroimage

JF - Neuroimage

SN - 1053-8119

IS - 1

ER -

ID: 4539355