Pubblicazioni

Autori:

Barbi, C; Vernillo, G; Emadi Andani, M; Giuriato, G; Laginestra, F G; Cavicchia, A; Fiorini Aloisi, G; Martignon, C; Pedrinolla, A; Schena, F; Venturelli, M

Titolo:

Comparison between conventional and neuronavigated strategies to assess corticospinal responsiveness in unfatigued and fatigued knee-extensor muscles

Anno:

2023

Tipologia prodotto:

Articolo in Rivista

Tipologia ANVUR:

Articolo su rivista

Lingua:

Inglese

Formato:

Elettronico

Referee:

Sì

Nome rivista:

Neuroscience Letters

ISSN Rivista:

0304-3940

N° Volume:

811

Numero o Fascicolo:

137351

Intervallo pagine:

1-7

Parole chiave:

Corticospinal excitability; Corticospinal inhibition; Neuromuscular fatigability; Neuronavigator; Transcranial magnetic stimulation

Breve descrizione dei contenuti:

In studying neuromuscular fatigability, researchers commonly use functional criteria to position and hold the transcranial magnetic stimulation (TMS) coil during testing sessions. This could influence the magnitude of corticospinal excitability and inhibition responses due to imprecise and unsteady positions of the coil. To reduce coil position and orientation variability, neuronavigated TMS (nTMS) could be used. We evaluated the accuracy of nTMS and a standardized function-guided procedure for maintaining TMS coil position both in unfatigued and fatigued knee extensors. Eighteen participants (10F/8M) volunteered in two identical and randomized sessions. Maximal and submaximal neuromuscular evaluations were performed with TMS three times before (PRE_1) and three times after (PRE_2) a 2 min resting session and one time immediately after (POST) a 2-min sustained maximal voluntary isometric contraction (MVIC). The located "hotspot" [the location that evoked the largest motor-evoked potential (MEP) responses in the rectus femoris] was maintained either with or without nTMS. MEP, silent period (SP) and the distance between the "hotspot" and the actual coil position were recorded. A time × contraction intensity × testing session × muscle interaction was not observed for MEP, SP, and distance. Bland-Altman plots presented adequate agreements for MEP and SP. Spatial accuracy of TMS coil position over the motor cortex did not influence corticospinal excitability and inhibition in unfatigued and fatigued knee extensors. The variability in MEP and SP responses may be due to spontaneous fluctuations in corticospinal excitability and inhibition, and it is not altered by the spatial stability of the stimulation point.

Pagina Web:

https://doi.org/10.1016/j.neulet.2023.137351

Id prodotto:

134394

Handle IRIS:

11562/1096927

ultima modifica:

4 agosto 2023

Citazione bibliografica:

Barbi, C; Vernillo, G; Emadi Andani, M; Giuriato, G; Laginestra, F G; Cavicchia, A; Fiorini Aloisi, G; Martignon, C; Pedrinolla, A; Schena, F; Venturelli, M, Comparison between conventional and neuronavigated strategies to assess corticospinal responsiveness in unfatigued and fatigued knee-extensor muscles «Neuroscience Letters» , vol. 811 , n. 137351 , 2023 , pp. 1-7

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