Physiological movement develops on the basis of sensorimotor integration through synchronisation between the copy of signals sent to the effector muscles and the incoming flow of sensory information. Our aim is to study corticomuscular coherence (CMC), the most widely used measure of synchronization between brain and muscle electrical activities, in dependence on the level of visual feedback and the executing body side. We analysed CMC in 18 healthy volunteers while performing a weak isometric handgrip of an air bulb with either the right or the left hand, in either the presence or absence of visual feedback on the exerted pressure. The absence of visual feedback decreased the CMC peak frequency from 27 Hz to 23 Hz (p < 0.001), increased the CMC peak amplitude from 0.05 to 0.07 (p = 0.005) and decreased the electroencephalographic beta band power (p = 0.005). None of these measures changed in dependence on the performing hand (p > 0.2 consistently). The lack of dependence of CMC on the controlled hand involved in the movement can be considered in agreement with small hemispheric asymmetries of hand representations in primary sensorimotor cortices. Modulation of visual information changed corticomuscular synchronizations and cortical involvement, reflecting the crucial role of gaze in human behaviour. Given the fundamental role of sensory integration in motor execution, the availability of a simple index sensitive to modulations of perceptual afferents may prove useful in determining the use or the monitoring of the effects of sensory enrichments in personalized rehabilitation. © 2022 IBRO

Corticomuscular Coherence Dependence on Body Side and Visual Feedback

L'Abbate, T.;Armonaite, K.;Bertoli, M.;Conti, L.;Grifoni, J.;Tecchio, F.
2022-01-01

Abstract

Physiological movement develops on the basis of sensorimotor integration through synchronisation between the copy of signals sent to the effector muscles and the incoming flow of sensory information. Our aim is to study corticomuscular coherence (CMC), the most widely used measure of synchronization between brain and muscle electrical activities, in dependence on the level of visual feedback and the executing body side. We analysed CMC in 18 healthy volunteers while performing a weak isometric handgrip of an air bulb with either the right or the left hand, in either the presence or absence of visual feedback on the exerted pressure. The absence of visual feedback decreased the CMC peak frequency from 27 Hz to 23 Hz (p < 0.001), increased the CMC peak amplitude from 0.05 to 0.07 (p = 0.005) and decreased the electroencephalographic beta band power (p = 0.005). None of these measures changed in dependence on the performing hand (p > 0.2 consistently). The lack of dependence of CMC on the controlled hand involved in the movement can be considered in agreement with small hemispheric asymmetries of hand representations in primary sensorimotor cortices. Modulation of visual information changed corticomuscular synchronizations and cortical involvement, reflecting the crucial role of gaze in human behaviour. Given the fundamental role of sensory integration in motor execution, the availability of a simple index sensitive to modulations of perceptual afferents may prove useful in determining the use or the monitoring of the effects of sensory enrichments in personalized rehabilitation. © 2022 IBRO
2022
adult
article
brain asymmetry
clinical article
controlled study
electroencephalogram
electroencephalography
electromyography
female
gaze
hand grip
handedness
human
human experiment
male
muscle
rehabilitation
sensorimotor cortex
visual feedback
visual information
electroencephalography
electromyography
hand strength
motor cortex
muscle isometric contraction
physiology
sensory feedback
skeletal muscle, Electroencephalography
Electromyography
Feedback, Sensory
Hand Strength
Humans
Isometric Contraction
Motor Cortex
Muscle, Skeletal
corticomuscolar coherence CMC
electroencephalography EEG
electromyography EMG
handedness
isometric force
visual feedback
File in questo prodotto:
File Dimensione Formato  
1-s2.0-S030645222200080X-main.pdf

accesso aperto

Tipologia: Documento in Post-print
Licenza: NON PUBBLICO - Accesso privato/ristretto
Dimensione 1.54 MB
Formato Adobe PDF
1.54 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.14086/4813
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
social impact