| | SLO | ENG | Cookies and privacy

Bigger font | Smaller font
First page > Show document

Show document Help

Title:Effects of jaw clenching and mental stress on persistent inward currents estimated by two different methods
Authors:ID Mesquita, Ricardo N. O. (Author)
ID Taylor, Janet (Author)
ID Trajano, Gabriel (Author)
ID Holobar, Aleš (Author)
ID Gonçalves, Basilio (Author)
ID Blazevich, Anthony (Author)
Files:.pdf Eur_J_of_Neuroscience_-_2023_-_Mesquita_-_Effects_of_jaw_clenching_and_mental_stress_on_persistent_inward_currents.pdf (3,22 MB)
MD5: C4D9A6ACE51D7CFED49367EBEEED2E39
 
URL https://onlinelibrary.wiley.com/doi/10.1111/ejn.16158
 
Language:English
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FERI - Faculty of Electrical Engineering and Computer Science
Abstract:Spinal motoneuron firing depends greatly on persistent inward currents (PICs), which in turn are facilitated by the neuromodulators serotonin and noradrenaline. The aim of this study was to determine whether jaw clenching (JC) and mental stress (MS), which may increase neuromodulator release, facilitate PICs in human motoneurons. The paired motor unit (MU) technique was used to estimate PIC contribution to motoneuron firing. Surface electromyograms were collected using a 32-channel matrix on gastrocnemius medialis (GM) during voluntary, ramp, plantar flexor contractions. MU discharges were identified, and delta frequency (ΔF), a measure of recruitment–derecruitment hysteresis, was calculated. Additionally, another technique was used (VibStim) that evokes involuntary contractions that persist after cessation of combined Achilles tendon vibration and triceps surae neuromuscular electrical stimulation. VibStim measures of plantar flexor torque and soleus activity may reflect PIC activation. ΔF was not significantly altered by JC (p = .679, n = 18, 9 females) or MS (p = .147, n = 14, 5 females). However, all VibStim variables quantifying involuntary torque and muscle activity during and after vibration cessation were significantly increased in JC (p < .011, n = 20, 10 females) and some, but not all, increased in MS (p = .017–.05, n = 19, 10 females). JC and MS significantly increased the magnitude of involuntary contractions (VibStim) but had no effect on GM ΔF during voluntary contractions. Effects of increased neuromodulator release on PIC contribution to motoneuron firing might differ between synergists or be context dependent. Based on these data, the background level of voluntary contraction and, hence, both neuromodulation and ionotropic inputs could influence neuromodulatory PIC enhancement.
Keywords:electromyography, bistability, HD-EMG, input–output function, motor neuron
Publication status:Published
Publication version:Version of Record
Submitted for review:16.12.2022
Article acceptance date:13.09.2023
Publication date:15.10.2023
Publisher:Wiley (Blackwell Science)
Year of publishing:2023
Number of pages:str. 4011-4033
Numbering:Vol. 58, iss. 9
PID:20.500.12556/DKUM-88742 New window
UDC:616.8:004.5
ISSN on article:1460-9568
COBISS.SI-ID:168675843 New window
DOI:10.1111/ejn.16158 New window
Publication date in DKUM:22.05.2024
Views:100
Downloads:17
Metadata:XML DC-XML DC-RDF
Categories:Misc.
:
MESQUITA, Ricardo N. O., TAYLOR, Janet, TRAJANO, Gabriel, HOLOBAR, Aleš, GONÇALVES, Basilio and BLAZEVICH, Anthony, 2023, Effects of jaw clenching and mental stress on persistent inward currents estimated by two different methods. European journal of neuroscience [online]. 2023. Vol. 58, no. 9, p. 4011–4033. [Accessed 25 April 2025]. DOI 10.1111/ejn.16158. Retrieved from: https://dk.um.si/IzpisGradiva.php?lang=eng&id=88742
Copy citation
  
Average score:
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
(0 votes)
Your score:Voting is allowed only for logged in users.
Share:Bookmark and Share


Hover the mouse pointer over a document title to show the abstract or click on the title to get all document metadata.

Record is a part of a journal

Title:European journal of neuroscience
Shortened title:EJN, Eur. j. neurosci.
Publisher:Blackwell Science
ISSN:1460-9568
COBISS.SI-ID:517706521 New window

Document is financed by a project

Funder:ARIS - Slovenian Research and Innovation Agency
Project number:J2-1731-2019
Name:Dekompozicija sestavljenih mišičnih potencialov
Funder:ARIS - Slovenian Research and Innovation Agency
Project number:P2-0041-2020
Name:Računalniški sistemi, metodologije in inteligentne storitve

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

Language:Slovenian
Keywords:nevroni, elektromiografija, motorika


Comments

Leave comment

You must log in to leave a comment.

Comments (0)
0 - 0 / 0
 
There are no comments!

Back
Logos of partners University of Maribor University of Ljubljana University of Primorska University of Nova Gorica