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Naslov:Effects of jaw clenching and mental stress on persistent inward currents estimated by two different methods
Avtorji:ID Mesquita, Ricardo N. O. (Avtor)
ID Taylor, Janet (Avtor)
ID Trajano, Gabriel (Avtor)
ID Holobar, Aleš (Avtor)
ID Gonçalves, Basilio (Avtor)
ID Blazevich, Anthony (Avtor)
Datoteke:.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
 
Jezik:Angleški jezik
Vrsta gradiva:Članek v reviji
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FERI - Fakulteta za elektrotehniko, računalništvo in informatiko
Opis: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.
Ključne besede:electromyography, bistability, HD-EMG, input–output function, motor neuron
Status publikacije:Objavljeno
Verzija publikacije:Objavljena publikacija
Poslano v recenzijo:16.12.2022
Datum sprejetja članka:13.09.2023
Datum objave:15.10.2023
Založnik:Wiley (Blackwell Science)
Leto izida:2023
Št. strani:str. 4011-4033
Številčenje:Vol. 58, iss. 9
PID:20.500.12556/DKUM-88742 Novo okno
UDK:616.8:004.5
COBISS.SI-ID:168675843 Novo okno
DOI:10.1111/ejn.16158 Novo okno
ISSN pri članku:1460-9568
Datum objave v DKUM:22.05.2024
Število ogledov:100
Število prenosov:12
Metapodatki:XML DC-XML DC-RDF
Področja:Ostalo
:
MESQUITA, Ricardo N. O., TAYLOR, Janet, TRAJANO, Gabriel, HOLOBAR, Aleš, GONÇALVES, Basilio in BLAZEVICH, Anthony, 2023, Effects of jaw clenching and mental stress on persistent inward currents estimated by two different methods. European journal of neuroscience [na spletu]. 2023. Vol. 58, no. 9, p. 4011–4033. [Dostopano 9 april 2025]. DOI 10.1111/ejn.16158. Pridobljeno s: https://dk.um.si/IzpisGradiva.php?lang=slv&id=88742
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Gradivo je del revije

Naslov:European journal of neuroscience
Skrajšan naslov:EJN, Eur. j. neurosci.
Založnik:Blackwell Science
ISSN:1460-9568
COBISS.SI-ID:517706521 Novo okno

Gradivo je financirano iz projekta

Financer:ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
Številka projekta:J2-1731-2019
Naslov:Dekompozicija sestavljenih mišičnih potencialov
Financer:ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
Številka projekta:P2-0041-2020
Naslov:Računalniški sistemi, metodologije in inteligentne storitve

Licence

Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:nevroni, elektromiografija, motorika


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