Abstract
Background: Movement-Related Cortical Potentials (MRCPs) are widely used in studying brain dynamics of motor control. However, limited information is available on complex tasks such as locomotion for which the appropriate identification of gait initiation trigger is still a technical challenge. Thus, it is conceivable that recorded brain activity may vary due to the instrument used to provide the temporal trigger. Therefore, a comparative assessment was performed to determine whether and how trigger identification techniques affect the MRCP in gait initiation. New Method: Eleven able-bodied young participants performed 200 forward- and 200 backward-oriented self-initiated steps. Brain activity was recorded through 64-channel electroencephalography. Four different triggering techniques were tested based on measurements of surface electromyography, stereophotogrammetry and forceplates. Results: Repeated-Measures ANOVAs on the mean amplitude of the Bereitschaftspotential and on both peak amplitude and latency of the motor potential showed a main effect of the triggering technique (p < 0.003). Specifically, force plates signal amplitude (−11.56 ± 1.4 μV) was larger than stereophotogrammetry (−5.0±0.5 μV and −6.5 ± 1 μV) and electromyography (−7.2 ± 0.9 μV). Comparison with Existing Method(s): Considering the gait initiation task, no previous study has performed a comparison between the MRCPs observed by triggering the same signal with different approaches. Conclusion: Different instruments identify triggers that vary in terms of time delay, resulting in different amplitudes and timing of the MRCPs. The comparative analysis indicates that forceplate allows to obtain the best MRCP trigger to study gait initiation, in terms of signal strength, cost and set up time.
| Original language | English |
|---|---|
| Pages (from-to) | 95-101 |
| Number of pages | 7 |
| Journal | Journal of Neuroscience Methods |
| Volume | 311 |
| DOIs | |
| Publication status | Published - Jan 1 2019 |
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Keywords
- Biomechanics
- Locomotion
- Motion capture
- Motor potential
- Stepping
ASJC Scopus subject areas
- Neuroscience(all)
Cite this
How do different movement references influence ERP related to gait initiation? A comparative methods’ assessment. / Russo, Yuri; Berchicci, Marika; Di Russo, Francesco; Vannozzi, Giuseppe.
In: Journal of Neuroscience Methods, Vol. 311, 01.01.2019, p. 95-101.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - How do different movement references influence ERP related to gait initiation? A comparative methods’ assessment
AU - Russo, Yuri
AU - Berchicci, Marika
AU - Di Russo, Francesco
AU - Vannozzi, Giuseppe
PY - 2019/1/1
Y1 - 2019/1/1
N2 - Background: Movement-Related Cortical Potentials (MRCPs) are widely used in studying brain dynamics of motor control. However, limited information is available on complex tasks such as locomotion for which the appropriate identification of gait initiation trigger is still a technical challenge. Thus, it is conceivable that recorded brain activity may vary due to the instrument used to provide the temporal trigger. Therefore, a comparative assessment was performed to determine whether and how trigger identification techniques affect the MRCP in gait initiation. New Method: Eleven able-bodied young participants performed 200 forward- and 200 backward-oriented self-initiated steps. Brain activity was recorded through 64-channel electroencephalography. Four different triggering techniques were tested based on measurements of surface electromyography, stereophotogrammetry and forceplates. Results: Repeated-Measures ANOVAs on the mean amplitude of the Bereitschaftspotential and on both peak amplitude and latency of the motor potential showed a main effect of the triggering technique (p < 0.003). Specifically, force plates signal amplitude (−11.56 ± 1.4 μV) was larger than stereophotogrammetry (−5.0±0.5 μV and −6.5 ± 1 μV) and electromyography (−7.2 ± 0.9 μV). Comparison with Existing Method(s): Considering the gait initiation task, no previous study has performed a comparison between the MRCPs observed by triggering the same signal with different approaches. Conclusion: Different instruments identify triggers that vary in terms of time delay, resulting in different amplitudes and timing of the MRCPs. The comparative analysis indicates that forceplate allows to obtain the best MRCP trigger to study gait initiation, in terms of signal strength, cost and set up time.
AB - Background: Movement-Related Cortical Potentials (MRCPs) are widely used in studying brain dynamics of motor control. However, limited information is available on complex tasks such as locomotion for which the appropriate identification of gait initiation trigger is still a technical challenge. Thus, it is conceivable that recorded brain activity may vary due to the instrument used to provide the temporal trigger. Therefore, a comparative assessment was performed to determine whether and how trigger identification techniques affect the MRCP in gait initiation. New Method: Eleven able-bodied young participants performed 200 forward- and 200 backward-oriented self-initiated steps. Brain activity was recorded through 64-channel electroencephalography. Four different triggering techniques were tested based on measurements of surface electromyography, stereophotogrammetry and forceplates. Results: Repeated-Measures ANOVAs on the mean amplitude of the Bereitschaftspotential and on both peak amplitude and latency of the motor potential showed a main effect of the triggering technique (p < 0.003). Specifically, force plates signal amplitude (−11.56 ± 1.4 μV) was larger than stereophotogrammetry (−5.0±0.5 μV and −6.5 ± 1 μV) and electromyography (−7.2 ± 0.9 μV). Comparison with Existing Method(s): Considering the gait initiation task, no previous study has performed a comparison between the MRCPs observed by triggering the same signal with different approaches. Conclusion: Different instruments identify triggers that vary in terms of time delay, resulting in different amplitudes and timing of the MRCPs. The comparative analysis indicates that forceplate allows to obtain the best MRCP trigger to study gait initiation, in terms of signal strength, cost and set up time.
KW - Biomechanics
KW - Locomotion
KW - Motion capture
KW - Motor potential
KW - Stepping
UR - http://www.scopus.com/inward/record.url?scp=85055287412&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85055287412&partnerID=8YFLogxK
U2 - 10.1016/j.jneumeth.2018.10.006
DO - 10.1016/j.jneumeth.2018.10.006
M3 - Article
C2 - 30326203
AN - SCOPUS:85055287412
VL - 311
SP - 95
EP - 101
JO - Journal of Neuroscience Methods
JF - Journal of Neuroscience Methods
SN - 0165-0270
ER -