1
|
Shimizu T, Nakayama Y, Bokuda K, Takahashi K. Sensory Gating during Voluntary Finger Movement in Amyotrophic Lateral Sclerosis with Sensory Cortex Hyperexcitability. Brain Sci 2023; 13:1325. [PMID: 37759926 PMCID: PMC10526384 DOI: 10.3390/brainsci13091325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 09/06/2023] [Accepted: 09/13/2023] [Indexed: 09/29/2023] Open
Abstract
Cortical responses in somatosensory evoked potentials (SEP) are enhanced in patients with amyotrophic lateral sclerosis (ALS). This study investigated whether sensory gating is involved in the pathophysiology of sensory cortical hyperactivity in ALS patients. The median nerve SEP was recorded at rest and during voluntary finger movements in 14 ALS patients and 13 healthy control subjects. The parietal N20, P25, and frontal N30 were analyzed, and sensory gating was assessed by measuring the amplitude of each component during finger movement. The amplitudes of the N20 onset-peak, N20 peak-P25 peak, and N30 onset-peak were higher in ALS patients than in controls. Nonetheless, there were no significant differences in the amplitude reduction ratio of SEPs between patients and controls. There was a significant correlation between the baseline amplitudes of the N20 onset-peak or N20 peak-P25 peak and their gating ratios in patients with ALS. Our findings indicate that the excitability of the primary sensory cortex and secondary motor cortex is enhanced in ALS, while sensory gating is preserved in the early stages of ALS. This result suggests that enhanced SEP is caused by the hyperexcitability of the primary sensory and secondary motor cortices but not by the dysfunction of inhibitory mechanisms during voluntary movements.
Collapse
Affiliation(s)
- Toshio Shimizu
- Department of Neurology, Tokyo Metropolitan Neurological Hospital, Tokyo 183-0042, Japan; (K.B.); (K.T.)
| | - Yuki Nakayama
- Unit for Intractable Disease Nursing Care, Tokyo Metropolitan Institute of Medical Science, Tokyo 156-8506, Japan;
| | - Kota Bokuda
- Department of Neurology, Tokyo Metropolitan Neurological Hospital, Tokyo 183-0042, Japan; (K.B.); (K.T.)
| | - Kazushi Takahashi
- Department of Neurology, Tokyo Metropolitan Neurological Hospital, Tokyo 183-0042, Japan; (K.B.); (K.T.)
| |
Collapse
|
2
|
Brændholt M, Kluger DS, Varga S, Heck DH, Gross J, Allen MG. Breathing in waves: Understanding respiratory-brain coupling as a gradient of predictive oscillations. Neurosci Biobehav Rev 2023; 152:105262. [PMID: 37271298 DOI: 10.1016/j.neubiorev.2023.105262] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 05/03/2023] [Accepted: 05/24/2023] [Indexed: 06/06/2023]
Abstract
Breathing plays a crucial role in shaping perceptual and cognitive processes by regulating the strength and synchronisation of neural oscillations. Numerous studies have demonstrated that respiratory rhythms govern a wide range of behavioural effects across cognitive, affective, and perceptual domains. Additionally, respiratory-modulated brain oscillations have been observed in various mammalian models and across diverse frequency spectra. However, a comprehensive framework to elucidate these disparate phenomena remains elusive. In this review, we synthesise existing findings to propose a neural gradient of respiratory-modulated brain oscillations and examine recent computational models of neural oscillations to map this gradient onto a hierarchical cascade of precision-weighted prediction errors. By deciphering the computational mechanisms underlying respiratory control of these processes, we can potentially uncover new pathways for understanding the link between respiratory-brain coupling and psychiatric disorders.
Collapse
Affiliation(s)
- Malthe Brændholt
- Center of Functionally Integrative Neuroscience, Aarhus University, Denmark
| | - Daniel S Kluger
- Institute for Biomagnetism and Biosignal Analysis, University of Münster, Germany.
| | - Somogy Varga
- School of Culture and Society, Aarhus University, Denmark; The Centre for Philosophy of Epidemiology, Medicine and Public Health, University of Johannesburg, South Africa
| | - Detlef H Heck
- Department of Biomedical Sciences, University of Minnesota Medical School, Duluth, MN
| | - Joachim Gross
- Institute for Biomagnetism and Biosignal Analysis, University of Münster, Germany; Otto Creutzfeldt Center for Cognitive and Behavioral Neuroscience, University of Münster, Germany
| | - Micah G Allen
- Center of Functionally Integrative Neuroscience, Aarhus University, Denmark; Cambridge Psychiatry, University of Cambridge, UK
| |
Collapse
|
3
|
Rimbert S, Lelarge J, Guerci P, Bidgoli SJ, Meistelman C, Cheron G, Cebolla Alvarez AM, Schmartz D. Detection of Motor Cerebral Activity After Median Nerve Stimulation During General Anesthesia (STIM-MOTANA): Protocol for a Prospective Interventional Study. JMIR Res Protoc 2023; 12:e43870. [PMID: 36729587 PMCID: PMC10013682 DOI: 10.2196/43870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 12/15/2022] [Accepted: 12/16/2022] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Accidental awareness during general anesthesia (AAGA) is defined as an unexpected awareness of the patient during general anesthesia. This phenomenon occurs in 1%-2% of high-risk practice patients and can cause physical suffering and psychological after-effects, called posttraumatic stress disorder. In fact, no monitoring techniques are satisfactory enough to effectively prevent AAGA; therefore, new alternatives are needed. Because the first reflex for a patient during an AAGA is to move, but cannot do so because of the neuromuscular blockers, we believe that it is possible to design a brain-computer interface (BCI) based on the detection of movement intention to warn the anesthetist. To do this, we propose to describe and detect the changes in terms of motor cortex oscillations during general anesthesia with propofol, while a median nerve stimulation is performed. We believe that our results could enable the design of a BCI based on median nerve stimulation, which could prevent AAGA. OBJECTIVE To our knowledge, no published studies have investigated the detection of electroencephalographic (EEG) patterns in relation to peripheral nerve stimulation over the sensorimotor cortex during general anesthesia. The main objective of this study is to describe the changes in terms of event-related desynchronization and event-related synchronization modulations, in the EEG signal over the motor cortex during general anesthesia with propofol while a median nerve stimulation is performed. METHODS STIM-MOTANA is an interventional and prospective study conducted with patients scheduled for surgery under general anesthesia, involving EEG measurements and median nerve stimulation at two different times: (1) when the patient is awake before surgery (2) and under general anesthesia. A total of 30 patients will receive surgery under complete intravenous anesthesia with a target-controlled infusion pump of propofol. RESULTS The changes in event-related desynchronization and event-related synchronization during median nerve stimulation according to the various propofol concentrations for 30 patients will be analyzed. In addition, we will apply 4 different offline machine learning algorithms to detect the median nerve stimulation at the cerebral level. Recruitment began in December 2022. Data collection is expected to conclude in June 2024. CONCLUSIONS STIM-MOTANA will be the first protocol to investigate median nerve stimulation cerebral motor effect during general anesthesia for the detection of intraoperative awareness. Based on strong practical and theoretical scientific reasoning from our previous studies, our innovative median nerve stimulation-based BCI would provide a way to detect intraoperative awareness during general anesthesia. TRIAL REGISTRATION Clinicaltrials.gov NCT05272202; https://clinicaltrials.gov/ct2/show/NCT05272202. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID) PRR1-10.2196/43870.
Collapse
Affiliation(s)
- Sébastien Rimbert
- CHU Brugmann, Université Libre de Bruxelles, Bruxelles, Belgium.,Laboratory of Neurophysiology and Movement Biomechanics, Université Libre de Bruxelles Neurosciences Institute, Bruxelles, Belgium.,Inria Bordeaux Sud-Ouest, University of Bordeaux, Talence, France
| | - Julien Lelarge
- Department of Anesthesiology and Critical Care Medicine, University Hospital of Nancy, Vandoeuvre-lès-Nancy, France
| | - Philippe Guerci
- Department of Anesthesiology and Critical Care Medicine, University Hospital of Nancy, Vandoeuvre-lès-Nancy, France
| | | | - Claude Meistelman
- Department of Anesthesiology and Critical Care Medicine, University Hospital of Nancy, Vandoeuvre-lès-Nancy, France
| | - Guy Cheron
- Laboratory of Neurophysiology and Movement Biomechanics, Université Libre de Bruxelles Neurosciences Institute, Bruxelles, Belgium
| | - Ana Maria Cebolla Alvarez
- Laboratory of Neurophysiology and Movement Biomechanics, Université Libre de Bruxelles Neurosciences Institute, Bruxelles, Belgium
| | - Denis Schmartz
- CHU Brugmann, Université Libre de Bruxelles, Bruxelles, Belgium
| |
Collapse
|
4
|
Modulation of sensorimotor oscillation by sensory gating in the frontal cortex. Neuroreport 2023; 34:9-16. [PMID: 36504037 DOI: 10.1097/wnr.0000000000001850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
OBJECTIVES To reveal that nonprimary motor-related areas located in the upper stream of the sensorimotor area are associated with self-regulated local electroencephalogram changes in the sensorimotor area during motor tasks. METHODS Among healthy participants, we measured the gating of somatosensory-evoked potentials (SEPs) in nonprimary motor-related areas and the sensorimotor area, and event-related desynchronisation, which reflects the excitability changes of the neurons localised in the sensorimotor area during motor execution and imagery. RESULTS We confirmed significant correlations between beta-band event-related desynchronisation and the somatosensory-evoked potential gating of frontal N30 during motor imagery and execution (motor imagery: r = 0.723; P < 0.05; motor execution: r = 0.873; P < 0.05), and nonsignificant correlations between beta-band event-related desynchronisation and the somatosensory-evoked potential gating of N20 (motor imagery: r = 0.079; P > 0.05; motor execution: r = 0.449; P > 0.05). CONCLUSIONS The N30 gating of SEPs, with which the beta-band event-related desynchronisation was associated, implies that they modulate sensory input to the supplementary motor area/premotor cortex during motor tasks, the beta-band self-regulated local electroencephalogram changes in the sensorimotor area related sensory input to the supplementary motor area/premotor cortex, and not to primary sensory area derived from N20 gating. This study suggests that some motor commands are derived from sensory gating in the supplementary motor area/premotor cortex.
Collapse
|
5
|
Zabihhosseinian M, Yielder P, Wise R, Holmes M, Murphy B. Effect of Neck Muscle Fatigue on Hand Muscle Motor Performance and Early Somatosensory Evoked Potentials. Brain Sci 2021; 11:1481. [PMID: 34827480 PMCID: PMC8615699 DOI: 10.3390/brainsci11111481] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 11/01/2021] [Accepted: 11/05/2021] [Indexed: 11/16/2022] Open
Abstract
Even on pain free days, recurrent neck pain alters sensorimotor integration (SMI) measured via somatosensory evoked potentials (SEPs). Neck muscle fatigue decreases upper limb proprioception, and thus may interfere with upper limb motor task acquisition and SMI. This study aimed to determine the effect of cervical extensor muscle (CEM) fatigue on upper limb motor acquisition and retention; and SMI, measured via early SEPs. Twenty-four healthy right-handed individuals were randomly assigned to control or CEM fatigue. Baseline SEPs were elicited via median nerve stimulation at the wrist. Participants then lay prone on a padded table. The fatigue group supported a 2 kg weight until they could no longer maintain the position. The control group rested their neck in neutral for 5 min. Participants completed pre- and post-motor skill acquisition while seated, SEPs were again collected. Task retention was measured 24 h later. Accuracy improved post acquisition and at retention for both groups (p < 0.001), with controls outperforming the fatigue group (p < 0.05). The fatigue group had significantly greater increases in the N24 (p = 0.017) and N30 (p = 0.007) SEP peaks. CEM fatigue impaired upper limb motor learning outcomes in conjunction with differential changes in SEP peak amplitudes related to SMI.
Collapse
Affiliation(s)
- Mahboobeh Zabihhosseinian
- Faculty of Health Sciences, University of Ontario Institute of Technology, 2000 Simcoe St. North, Oshawa, ON L1G 0C5, Canada; (M.Z.); (P.Y.); (R.W.)
| | - Paul Yielder
- Faculty of Health Sciences, University of Ontario Institute of Technology, 2000 Simcoe St. North, Oshawa, ON L1G 0C5, Canada; (M.Z.); (P.Y.); (R.W.)
| | - Rufeyda Wise
- Faculty of Health Sciences, University of Ontario Institute of Technology, 2000 Simcoe St. North, Oshawa, ON L1G 0C5, Canada; (M.Z.); (P.Y.); (R.W.)
| | - Michael Holmes
- Department of Kinesiology, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, ON L2S 3A1, Canada;
| | - Bernadette Murphy
- Faculty of Health Sciences, University of Ontario Institute of Technology, 2000 Simcoe St. North, Oshawa, ON L1G 0C5, Canada; (M.Z.); (P.Y.); (R.W.)
| |
Collapse
|
6
|
Rawls E, Miskovic V, Lamm C. Delta phase reset predicts conflict-related changes in P3 amplitude and behavior. Brain Res 2020; 1730:146662. [PMID: 31930997 DOI: 10.1016/j.brainres.2020.146662] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 12/05/2019] [Accepted: 01/09/2020] [Indexed: 11/28/2022]
Abstract
When multiple competing responses are activated, we respond more slowly than if only one response is activated (response conflict). Conflict-induced slowing is reduced for consecutive high-conflict stimuli, an effect known as conflict adaptation. Verguts and Notebaert's (2009) adaptation by binding theory suggests this is due to Hebbian learning of cognitive control, potentiated by the response of the locus coeruleus norepinephrine (NE) system. Phasic activity of the NE system can potentially be measured non-invasively in humans by recording the P3 component of the event-related potential (ERP), and the P3 is sensitive to conflict adaptation. Bouret and Sara's (2005) network reset theory suggests that phasic NE might functionally reset ongoing large-scale network activity, generating synchronous neural population activity like the P3. To examine the possibility that network reset contributes to conflict effects in the P3, we recorded high-density EEG data while subjects performed a flanker task. As expected, conflict and conflict adaptation modulated P3 amplitudes. Brain-behavior correlation analyses indicated that activity during the rise of the P3 was related to RT and predicted RT differences due to conflict. More importantly, phase of delta oscillations not only predicted reaction time differences between low-conflict and high-conflict conditions, but delta phase reset also predicted the amplitude of the P3. Delta oscillations exhibited dominant peaks both pre and post-stimulus, and delta at stimulus onset predicted the post-stimulus ERP, in particular the N2 and P3. This result bridges human EEG with basic mechanisms suggested by computational neural models and invasive patient recordings, namely that salient cognitive events might reset ongoing oscillations leading to the generation of the phase-locked evoked potential. We conclude that partial phase reset is a cortical mechanism involved in monitoring the environment for unexpected events, and this response contributes to conflict effects in the ERP. These results are in line with theories that phasic NE release might reset ongoing cortical activity, leading to the generation of ERP components like the P3.
Collapse
Affiliation(s)
- Eric Rawls
- Department of Psychiatry and Behavioral Sciences, University of Minnesota, United States.
| | | | - Connie Lamm
- Department of Psychological Sciences, University of Arkansas, United States.
| |
Collapse
|
7
|
Angjelichinoski M, Banerjee T, Choi J, Pesaran B, Tarokh V. Minimax-optimal decoding of movement goals from local field potentials using complex spectral features. J Neural Eng 2019; 16:046001. [PMID: 30991369 DOI: 10.1088/1741-2552/ab1a1f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE We consider the problem of predicting eye movement goals from local field potentials (LFP) recorded through a multielectrode array in the macaque prefrontal cortex. The monkey is tasked with performing memory-guided saccades to one of eight targets during which LFP activity is recorded and used to train a decoder. APPROACH Previous reports have mainly relied on the spectral amplitude of the LFPs as decoding feature, while neglecting the phase without proper theoretical justification. This paper formulates the problem of decoding eye movement intentions in a statistically optimal framework and uses Gaussian sequence modeling and Pinsker's theorem to generate minimax-optimal estimates of the LFP signals which are used as decoding features. The approach is shown to act as a low-pass filter and each LFP in the feature space is represented via its complex Fourier coefficients after appropriate shrinking such that higher frequency components are attenuated; this way, the phase information inherently present in the LFP signal is naturally embedded into the feature space. MAIN RESULTS We show that the proposed complex spectrum-based decoder achieves prediction accuracy of up to [Formula: see text] at superficial cortical depths near the surface of the prefrontal cortex; this marks a significant performance improvement over conventional power spectrum-based decoders. SIGNIFICANCE The presented analyses showcase the promising potential of low-pass filtered LFP signals for highly reliable neural decoding of intended motor actions.
Collapse
Affiliation(s)
- Marko Angjelichinoski
- Department of Electrical and Computer Engineering, Duke University, Durham, NC, United States of America
| | | | | | | | | |
Collapse
|
8
|
De Martino E, Seminowicz DA, Schabrun SM, Petrini L, Graven-Nielsen T. High frequency repetitive transcranial magnetic stimulation to the left dorsolateral prefrontal cortex modulates sensorimotor cortex function in the transition to sustained muscle pain. Neuroimage 2019; 186:93-102. [DOI: 10.1016/j.neuroimage.2018.10.076] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 10/08/2018] [Accepted: 10/29/2018] [Indexed: 10/28/2022] Open
|
9
|
Guerra A, Bologna M, Paparella G, Suppa A, Colella D, Di Lazzaro V, Brown P, Berardelli A. Effects of Transcranial Alternating Current Stimulation on Repetitive Finger Movements in Healthy Humans. Neural Plast 2018; 2018:4593095. [PMID: 30123248 PMCID: PMC6079362 DOI: 10.1155/2018/4593095] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 04/24/2018] [Accepted: 05/23/2018] [Indexed: 02/04/2023] Open
Abstract
Transcranial alternating current stimulation (tACS) is a noninvasive neurophysiological technique that can entrain brain oscillations. Only few studies have investigated the effects of tACS on voluntary movements. We aimed to verify whether tACS, delivered over M1 at beta and gamma frequencies, has any effect on repetitive finger tapping as assessed by means of kinematic analysis. Eighteen healthy subjects were enrolled. Objective measurements of repetitive finger tapping were obtained by using a motion analysis system. M1 excitability was assessed by using single-pulse TMS and measuring the amplitude of motor-evoked potentials (MEPs). Movement kinematic measures and MEPs were collected during beta, gamma, and sham tACS and when the stimulation was off. Beta tACS led to an amplitude decrement (i.e., progressive reduction in amplitude) across the first ten movements of the motor sequence while gamma tACS had the opposite effect. The results did not reveal any significant effect of tACS on other movement parameters, nor any changes in MEPs. These findings demonstrate that tACS modulates finger tapping in a frequency-dependent manner with no concurrent changes in corticospinal excitability. The results suggest that cortical beta and gamma oscillations are involved in the motor control of repetitive finger movements.
Collapse
Affiliation(s)
| | - Matteo Bologna
- Neuromed Institute IRCCS, Pozzilli, Italy
- Department of Human Neurosciences, Sapienza University of Rome, Rome, Italy
| | - Giulia Paparella
- Department of Human Neurosciences, Sapienza University of Rome, Rome, Italy
| | - Antonio Suppa
- Neuromed Institute IRCCS, Pozzilli, Italy
- Department of Human Neurosciences, Sapienza University of Rome, Rome, Italy
| | - Donato Colella
- Department of Human Neurosciences, Sapienza University of Rome, Rome, Italy
| | - Vincenzo Di Lazzaro
- Unit of Neurology, Neurophysiology, Neurobiology, Department of Medicine, University Campus Bio-Medico, Rome, Italy
| | - Peter Brown
- Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, University of Oxford, Oxford, UK
- Medical Research Council Brain Network Dynamics Unit, Department of Pharmacology, University of Oxford, Mansfield Road, Oxford, UK
| | - Alfredo Berardelli
- Neuromed Institute IRCCS, Pozzilli, Italy
- Department of Human Neurosciences, Sapienza University of Rome, Rome, Italy
| |
Collapse
|
10
|
Macerollo A, Brown MJ, Kilner JM, Chen R. Neurophysiological Changes Measured Using Somatosensory Evoked Potentials. Trends Neurosci 2018; 41:294-310. [DOI: 10.1016/j.tins.2018.02.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 02/10/2018] [Accepted: 02/12/2018] [Indexed: 01/05/2023]
|
11
|
Ramsøy TZ, Skov M, Christensen MK, Stahlhut C. Frontal Brain Asymmetry and Willingness to Pay. Front Neurosci 2018; 12:138. [PMID: 29662432 PMCID: PMC5890093 DOI: 10.3389/fnins.2018.00138] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Accepted: 02/20/2018] [Indexed: 11/13/2022] Open
Abstract
Consumers frequently make decisions about how much they are willing to pay (WTP) for specific products and services, but little is known about the neural mechanisms underlying such calculations. In this study, we were interested in testing whether specific brain activation—the asymmetry in engagement of the prefrontal cortex—would be related to consumer choice. Subjects saw products and subsequently decided how much they were willing to pay for each product, while undergoing neuroimaging using electroencephalography. Our results demonstrate that prefrontal asymmetry in the gamma frequency band, and a trend in the beta frequency band that was recorded during product viewing was significantly related to subsequent WTP responses. Frontal asymmetry in the alpha band was not related to WTP decisions. Besides suggesting separate neuropsychological mechanisms of consumer choice, we find that one specific measure—the prefrontal gamma asymmetry—was most strongly related to WTP responses, and was most coupled to the actual decision phase. These findings are discussed in light of the psychology of WTP calculations, and in relation to the recent emergence of consumer neuroscience and neuromarketing.
Collapse
Affiliation(s)
- Thomas Z Ramsøy
- Neurons Inc., Holbæk, Denmark.,Singularity University, Sunnyvale, CA, United States.,Center for Decision Neuroscience, Department of Marketing, Copenhagen Business School, Frederiksberg, Denmark
| | - Martin Skov
- Center for Decision Neuroscience, Department of Marketing, Copenhagen Business School, Frederiksberg, Denmark
| | - Maiken K Christensen
- Center for Decision Neuroscience, Department of Marketing, Copenhagen Business School, Frederiksberg, Denmark
| | - Carsten Stahlhut
- Section for Cognitive Systems, Department of Informatics and Mathematical Modelling, Technical University of Denmark, Kongens Lyngby, Denmark
| |
Collapse
|
12
|
Veldman M, Maurits N, Nijland M, Wolters N, Mizelle J, Hortobágyi T. Spectral and temporal electroencephalography measures reveal distinct neural networks for the acquisition, consolidation, and interlimb transfer of motor skills in healthy young adults. Clin Neurophysiol 2018; 129:419-430. [DOI: 10.1016/j.clinph.2017.12.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 09/22/2017] [Accepted: 12/06/2017] [Indexed: 01/02/2023]
|
13
|
Määttä S, Könönen M, Kallioniemi E, Lakka T, Lintu N, Lindi V, Ferreri F, Ponzo D, Säisänen L. Development of cortical motor circuits between childhood and adulthood: A navigated TMS-HdEEG study. Hum Brain Mapp 2017; 38:2599-2615. [PMID: 28218489 PMCID: PMC6866783 DOI: 10.1002/hbm.23545] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 02/08/2017] [Accepted: 02/09/2017] [Indexed: 12/18/2022] Open
Abstract
Motor functions improve during childhood and adolescence, but little is still known about the development of cortical motor circuits during early life. To elucidate the neurophysiological hallmarks of motor cortex development, we investigated the differences in motor cortical excitability and connectivity between healthy children, adolescents, and adults by means of navigated suprathreshold motor cortex transcranial magnetic stimulation (TMS) combined with high-density electroencephalography (EEG). We demonstrated that with development, the excitability of the motor system increases, the TMS-evoked EEG waveform increases in complexity, the magnitude of induced activation decreases, and signal spreading increases. Furthermore, the phase of the oscillatory response to TMS becomes less consistent with age. These changes parallel an improvement in manual dexterity and may reflect developmental changes in functional connectivity. Hum Brain Mapp 38:2599-2615, 2017. © 2017 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Sara Määttä
- Department of Clinical NeurophysiologyInstitute of Clinical Medicine, Faculty of Health Sciences, University of Eastern FinlandKuopioFinland
- Department of Clinical NeurophysiologyKuopio University HospitalKuopioFinland
| | - Mervi Könönen
- Department of Clinical NeurophysiologyKuopio University HospitalKuopioFinland
- Department of Clinical RadiologyKuopio University HospitalKuopioFinland
| | - Elisa Kallioniemi
- Department of Clinical NeurophysiologyKuopio University HospitalKuopioFinland
- Department of Applied PhysicsUniversity of Eastern FinlandKuopioFinland
| | - Timo Lakka
- Institute of Biomedicine, Faculty of Health Sciences, University of Eastern FinlandKuopioFinland
- Department of Clinical Physiology and Nuclear MedicineKuopio University HospitalKuopioFinland
- Kuopio Research Institute of Exercise MedicineKuopioFinland
| | - Niina Lintu
- Institute of Biomedicine, Faculty of Health Sciences, University of Eastern FinlandKuopioFinland
| | - Virpi Lindi
- Institute of Biomedicine, Faculty of Health Sciences, University of Eastern FinlandKuopioFinland
| | - Florinda Ferreri
- Department of Clinical NeurophysiologyInstitute of Clinical Medicine, Faculty of Health Sciences, University of Eastern FinlandKuopioFinland
- Department of NeurologyUniversity Campus BiomedicoRomeItaly
| | - David Ponzo
- Department of NeurologyUniversity Campus BiomedicoRomeItaly
| | - Laura Säisänen
- Department of Clinical NeurophysiologyInstitute of Clinical Medicine, Faculty of Health Sciences, University of Eastern FinlandKuopioFinland
- Department of Clinical NeurophysiologyKuopio University HospitalKuopioFinland
| |
Collapse
|
14
|
Bigliassi M, Karageorghis CI, Wright MJ, Orgs G, Nowicky AV. Effects of auditory stimuli on electrical activity in the brain during cycle ergometry. Physiol Behav 2017; 177:135-147. [PMID: 28442333 DOI: 10.1016/j.physbeh.2017.04.023] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 04/21/2017] [Accepted: 04/21/2017] [Indexed: 11/25/2022]
Abstract
The present study sought to further understanding of the brain mechanisms that underlie the effects of music on perceptual, affective, and visceral responses during whole-body modes of exercise. Eighteen participants were administered light-to-moderate intensity bouts of cycle ergometer exercise. Each exercise bout was of 12-min duration (warm-up [3min], exercise [6min], and warm-down [3min]). Portable techniques were used to monitor the electrical activity in the brain, heart, and muscle during the administration of three conditions: music, audiobook, and control. Conditions were randomized and counterbalanced to prevent any influence of systematic order on the dependent variables. Oscillatory potentials at the Cz electrode site were used to further understanding of time-frequency changes influenced by voluntary control of movements. Spectral coherence analysis between Cz and frontal, frontal-central, central, central-parietal, and parietal electrode sites was also calculated. Perceptual and affective measures were taken at five timepoints during the exercise bout. Results indicated that music reallocated participants' attentional focus toward auditory pathways and reduced perceived exertion. The music also inhibited alpha resynchronization at the Cz electrode site and reduced the spectral coherence values at Cz-C4 and Cz-Fz. The reduced focal awareness induced by music led to a more autonomous control of cycle movements performed at light-to-moderate-intensities. Processing of interoceptive sensory cues appears to upmodulate fatigue-related sensations, increase the connectivity in the frontal and central regions of the brain, and is associated with neural resynchronization to sustain the imposed exercise intensity.
Collapse
Affiliation(s)
| | | | | | - Guido Orgs
- Department of Psychology, Goldsmiths, University of London, UK
| | | |
Collapse
|
15
|
Sburlea AI, Montesano L, Minguez J. Advantages of EEG phase patterns for the detection of gait intention in healthy and stroke subjects. J Neural Eng 2017; 14:036004. [PMID: 28291737 DOI: 10.1088/1741-2552/aa5f2f] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
OBJECTIVE One use of EEG-based brain-computer interfaces (BCIs) in rehabilitation is the detection of movement intention. In this paper we investigate for the first time the instantaneous phase of movement related cortical potential (MRCP) and its application to the detection of gait intention. APPROACH We demonstrate the utility of MRCP phase in two independent datasets, in which 10 healthy subjects and 9 chronic stroke patients executed a self-initiated gait task in three sessions. Phase features were compared to more conventional amplitude and power features. MAIN RESULTS The neurophysiology analysis showed that phase features have higher signal-to-noise ratio than the other features. Also, BCI detectors of gait intention based on phase, amplitude, and their combination were evaluated under three conditions: session-specific calibration, intersession transfer, and intersubject transfer. Results show that the phase based detector is the most accurate for session-specific calibration (movement intention was correctly detected in 66.5% of trials in healthy subjects, and in 63.3% in stroke patients). However, in intersession and intersubject transfer, the detector that combines amplitude and phase features is the most accurate one and the only that retains its accuracy (62.5% in healthy subjects and 59% in stroke patients) w.r.t. session-specific calibration. SIGNIFICANCE MRCP phase features improve the detection of gait intention and could be used in practice to remove time-consuming BCI recalibration.
Collapse
Affiliation(s)
- Andreea Ioana Sburlea
- University of Zaragoza (DIIS), Instituto de investigación en ingeniería de Aragón (I3A), Zaragoza, Spain. Bit&Brain Technologies S.L., Paseo Sagasta 19, 50001, Zaragoza, Spain
| | | | | |
Collapse
|
16
|
Cheron G. How to Measure the Psychological "Flow"? A Neuroscience Perspective. Front Psychol 2016; 7:1823. [PMID: 27999551 PMCID: PMC5138413 DOI: 10.3389/fpsyg.2016.01823] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 11/03/2016] [Indexed: 01/22/2023] Open
Affiliation(s)
- Guy Cheron
- Laboratory of Neurophysiology and Movement Biomechanics, ULB Neuroscience Institute, Université Libre de BruxellesBrussels, Belgium; Laboratory of Electrophysiology, Université de Mons-HainautMons, Belgium
| |
Collapse
|
17
|
Cheron G. Motor imagery in children with cerebral palsy: one step beyond with EEG dynamics. Dev Med Child Neurol 2016; 58:223-4. [PMID: 26179239 DOI: 10.1111/dmcn.12842] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Guy Cheron
- Laboratory of Electrophysiology, Université de Mons, Mons, Belgium.,Laboratory of Neurophysiology and Movement Biomechanics, ULB Neuroscience Institut, Université Libre de Bruxelles, Brussels, Belgium
| |
Collapse
|
18
|
Brown MJ, Staines WR. Differential effects of continuous theta burst stimulation over left premotor cortex and right prefrontal cortex on modulating upper limb somatosensory input. Neuroimage 2016; 127:97-109. [DOI: 10.1016/j.neuroimage.2015.11.051] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 11/18/2015] [Accepted: 11/23/2015] [Indexed: 12/21/2022] Open
|
19
|
Cebolla A, Cheron G. Sensorimotor and cognitive involvement of the beta–gamma oscillation in the frontal N30 component of somatosensory evoked potentials. Neuropsychologia 2015; 79:215-22. [DOI: 10.1016/j.neuropsychologia.2015.04.033] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Revised: 04/29/2015] [Accepted: 04/30/2015] [Indexed: 11/29/2022]
|
20
|
Sensory modulation of movement, posture and locomotion. Neurophysiol Clin 2015; 45:255-67. [DOI: 10.1016/j.neucli.2015.09.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 09/16/2015] [Accepted: 09/16/2015] [Indexed: 11/20/2022] Open
|
21
|
Cheron G. From biomechanics to sport psychology: the current oscillatory approach. Front Psychol 2015; 6:1642. [PMID: 26582999 PMCID: PMC4628124 DOI: 10.3389/fpsyg.2015.01642] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2015] [Accepted: 10/12/2015] [Indexed: 01/13/2023] Open
Affiliation(s)
- Guy Cheron
- Laboratory of Neurophysiology and Movement Biomechanics, ULB Neuroscience Institut, Université Libre de Bruxelles Brussels, Belgium ; Laboratory of Electrophysiology, Université de Mons-Hainaut Mons, Belgium
| |
Collapse
|
22
|
Somatosensory input to non-primary motor areas is enhanced during preparation of cued contraterlateral finger sequence movements. Behav Brain Res 2015; 286:166-74. [DOI: 10.1016/j.bbr.2015.02.052] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Revised: 02/25/2015] [Accepted: 02/27/2015] [Indexed: 12/31/2022]
|
23
|
Modulatory effects of movement sequence preparation and covert spatial attention on early somatosensory input to non-primary motor areas. Exp Brain Res 2014; 233:503-17. [DOI: 10.1007/s00221-014-4131-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Accepted: 10/13/2014] [Indexed: 10/24/2022]
|
24
|
Zarka D, Cevallos C, Petieau M, Hoellinger T, Dan B, Cheron G. Neural rhythmic symphony of human walking observation: Upside-down and Uncoordinated condition on cortical theta, alpha, beta and gamma oscillations. Front Syst Neurosci 2014; 8:169. [PMID: 25278847 PMCID: PMC4166901 DOI: 10.3389/fnsys.2014.00169] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Accepted: 08/31/2014] [Indexed: 11/20/2022] Open
Abstract
Biological motion observation has been recognized to produce dynamic change in sensorimotor activation according to the observed kinematics. Physical plausibility of the spatial-kinematic relationship of human movement may play a major role in the top-down processing of human motion recognition. Here, we investigated the time course of scalp activation during observation of human gait in order to extract and use it on future integrated brain-computer interface using virtual reality (VR). We analyzed event related potentials (ERP), the event related spectral perturbation (ERSP) and the inter-trial coherence (ITC) from high-density EEG recording during video display onset (−200–600 ms) and the steady state visual evoked potentials (SSVEP) inside the video of human walking 3D-animation in three conditions: Normal; Upside-down (inverted images); and Uncoordinated (pseudo-randomly mixed images). We found that early visual evoked response P120 was decreased in Upside-down condition. The N170 and P300b amplitudes were decreased in Uncoordinated condition. In Upside-down and Uncoordinated conditions, we found decreased alpha power and theta phase-locking. As regards gamma oscillation, power was increased during the Upside-down animation and decreased during the Uncoordinated animation. An SSVEP-like response oscillating at about 10 Hz was also described showing that the oscillating pattern is enhanced 300 ms after the heel strike event only in the Normal but not in the Upside-down condition. Our results are consistent with most of previous point-light display studies, further supporting possible use of virtual reality for neurofeedback applications.
Collapse
Affiliation(s)
- David Zarka
- Laboratory of Neurophysiology and Movement Biomechanics, Université Libre de Bruxelles Brussels, Belgium
| | - Carlos Cevallos
- Laboratory of Neurophysiology and Movement Biomechanics, Université Libre de Bruxelles Brussels, Belgium
| | - Mathieu Petieau
- Laboratory of Neurophysiology and Movement Biomechanics, Université Libre de Bruxelles Brussels, Belgium
| | - Thomas Hoellinger
- Laboratory of Neurophysiology and Movement Biomechanics, Université Libre de Bruxelles Brussels, Belgium
| | - Bernard Dan
- Laboratory of Neurophysiology and Movement Biomechanics, Université Libre de Bruxelles Brussels, Belgium ; Department of Neurology, Hopital Universitaire des Enfants reine Fabiola, Université Libre de Bruxelles Bruxelles, Belgium
| | - Guy Cheron
- Laboratory of Neurophysiology and Movement Biomechanics, Université Libre de Bruxelles Brussels, Belgium ; Laboratory of Electrophysiology, Université de Mons-Hainaut Bruxelles, Belgium
| |
Collapse
|
25
|
Cebolla AM, Palmero-Soler E, Dan B, Cheron G. Modulation of the N30 generators of the somatosensory evoked potentials by the mirror neuron system. Neuroimage 2014; 95:48-60. [PMID: 24662578 DOI: 10.1016/j.neuroimage.2014.03.039] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Revised: 03/10/2014] [Accepted: 03/13/2014] [Indexed: 10/25/2022] Open
Abstract
The N30 component of the somatosensory evoked potential is known to be modulated by sensory interference, motor action, movement ideation and observation. We introduce a new paradigm in which the observation task of another person's hand movement triggers the somatosensory stimulus, inducing the N30 response in participants. In order to identify the possible contribution of the mirror neuron network (MNN) to this early sensorimotor processing, we analyzed the N30 topography, the event-related spectral perturbation and the inter-trial coherence on single electroencephalogram (EEG) trials, and we applied swLORETA to localize the N30 sources implicated in the time-frequency domain at rest and during observation, as well as the generators differentiating these two contextual brain states. We found that N30 amplitude increase correlated with increased contralateral precentral alpha, frontal beta, and contralateral frontal gamma power spectrum, and with central and precentral alpha and parietal beta phase-locking of ongoing EEG signals. We demonstrate specific activation of the contralateral post-central and parietal cortex where the angular gyrus (BA39), an important MNN node, is implicated in this enhancement during observation. We conclude that this part of the MNN, involved in proprioceptive processing and more complex body-action representations, is already active prior to somatosensory input and may enhance N30.
Collapse
Affiliation(s)
- A M Cebolla
- Laboratory of Neurophysiology and Movement Biomechanics (L.N.M.B.), Neuroscience Institut (U.N.I.), Université Libre de Bruxelles (U.L.B.), Brussels, Belgium
| | - E Palmero-Soler
- Laboratory of Electrophysiology, Université de Mons (UMons), Belgium
| | - B Dan
- Department of Neurology, Hopital Universitaire des Enfants reine Fabiola, Université Libre de Bruxelles, Belgium
| | - G Cheron
- Laboratory of Neurophysiology and Movement Biomechanics (L.N.M.B.), Neuroscience Institut (U.N.I.), Université Libre de Bruxelles (U.L.B.), Brussels, Belgium; Laboratory of Electrophysiology, Université de Mons (UMons), Belgium.
| |
Collapse
|
26
|
Cheron G, Dan B, Márquez-Ruiz J. Translational approach to behavioral learning: lessons from cerebellar plasticity. Neural Plast 2013; 2013:853654. [PMID: 24319600 PMCID: PMC3844268 DOI: 10.1155/2013/853654] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Accepted: 09/18/2013] [Indexed: 11/17/2022] Open
Abstract
The role of cerebellar plasticity has been increasingly recognized in learning. The privileged relationship between the cerebellum and the inferior olive offers an ideal circuit for attempting to integrate the numerous evidences of neuronal plasticity into a translational perspective. The high learning capacity of the Purkinje cells specifically controlled by the climbing fiber represents a major element within the feed-forward and feedback loops of the cerebellar cortex. Reciprocally connected with the basal ganglia and multimodal cerebral domains, this cerebellar network may realize fundamental functions in a wide range of behaviors. This review will outline the current understanding of three main experimental paradigms largely used for revealing cerebellar functions in behavioral learning: (1) the vestibuloocular reflex and smooth pursuit control, (2) the eyeblink conditioning, and (3) the sensory envelope plasticity. For each of these experimental conditions, we have critically revisited the chain of causalities linking together neural circuits, neural signals, and plasticity mechanisms, giving preference to behaving or alert animal physiology. Namely, recent experimental approaches mixing neural units and local field potentials recordings have demonstrated a spike timing dependent plasticity by which the cerebellum remains at a strategic crossroad for deciphering fundamental and translational mechanisms from cellular to network levels.
Collapse
Affiliation(s)
- Guy Cheron
- Laboratory of Electrophysiology, Université de Mons, 7000 Mons, Belgium
- Laboratory of Neurophysiology and Movement Biomechanics, CP640, ULB Neuroscience Institut, Université Libre de Bruxelles, 1070 Brussels, Belgium
| | - Bernard Dan
- Laboratory of Neurophysiology and Movement Biomechanics, CP640, ULB Neuroscience Institut, Université Libre de Bruxelles, 1070 Brussels, Belgium
- Department of Neurology, Hôpital Universitaire des Enfants Reine Fabiola, Université Libre de Bruxelles, 1020 Brussels, Belgium
| | - Javier Márquez-Ruiz
- División de Neurociencias, Universidad Pablo de Olavide, 41013 Sevilla, Spain
| |
Collapse
|
27
|
From spinal central pattern generators to cortical network: integrated BCI for walking rehabilitation. Neural Plast 2012; 2012:375148. [PMID: 22272380 PMCID: PMC3261492 DOI: 10.1155/2012/375148] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2011] [Revised: 09/08/2011] [Accepted: 09/22/2011] [Indexed: 12/02/2022] Open
Abstract
Success in locomotor rehabilitation programs can be improved with the use of brain-computer interfaces (BCIs). Although a wealth of research has demonstrated that locomotion is largely controlled by spinal mechanisms, the brain is of utmost importance in monitoring locomotor patterns and therefore contains information regarding central pattern generation functioning. In addition, there is also a tight coordination between the upper and lower limbs, which can also be useful in controlling locomotion. The current paper critically investigates different approaches that are applicable to this field: the use of electroencephalogram (EEG), upper limb electromyogram (EMG), or a hybrid of the two neurophysiological signals to control assistive exoskeletons used in locomotion based on programmable central pattern generators (PCPGs) or dynamic recurrent neural networks (DRNNs). Plantar surface tactile stimulation devices combined with virtual reality may provide the sensation of walking while in a supine position for use of training brain signals generated during locomotion. These methods may exploit mechanisms of brain plasticity and assist in the neurorehabilitation of gait in a variety of clinical conditions, including stroke, spinal trauma, multiple sclerosis, and cerebral palsy.
Collapse
|
28
|
Feurra M, Paulus W, Walsh V, Kanai R. Frequency specific modulation of human somatosensory cortex. Front Psychol 2011; 2:13. [PMID: 21713181 PMCID: PMC3111335 DOI: 10.3389/fpsyg.2011.00013] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2010] [Accepted: 01/13/2011] [Indexed: 11/25/2022] Open
Abstract
Oscillatory neuronal activities are commonly observed in response to sensory stimulation. However, their functional roles are still the subject of debate. One-way to probe the roles of oscillatory neural activities is to deliver alternating current to the cortex at biologically relevant frequencies and examine whether such stimulation influences perception and cognition. In this study, we tested whether transcranial alternating current stimulation (tACS) over the primary somatosensory cortex (SI) could elicit tactile sensations in humans in a frequency-dependent manner. We tested the effectiveness of tACS over SI at frequency bands ranging from 2 to 70 Hz. Our results show that stimulation in alpha (10–14 Hz) and high gamma (52–70 Hz) frequency range produces a tactile sensation in the contralateral hand. A weaker effect was also observed for beta (16–20 Hz) stimulation. These findings highlight the frequency dependency of effective tACS over SI with the effective frequencies corresponding to those observed in previous electroencephalography/magnetoencephalography studies of tactile perception. Our present study suggests that tACS could be used as a powerful online stimulation technique to reveal the causal roles of oscillatory brain activities.
Collapse
Affiliation(s)
- Matteo Feurra
- Institute of Cognitive Neuroscience, Department of Psychology, University College London London, UK
| | | | | | | |
Collapse
|
29
|
Cebolla AM, Palmero-Soler E, Dan B, Cheron G. Frontal phasic and oscillatory generators of the N30 somatosensory evoked potential. Neuroimage 2010; 54:1297-306. [PMID: 20813188 DOI: 10.1016/j.neuroimage.2010.08.060] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2010] [Revised: 08/20/2010] [Accepted: 08/24/2010] [Indexed: 10/19/2022] Open
Abstract
The N30 component of somatosensory evoked potentials has been recognized as a crucial index of brain sensorimotor processing and has been increasingly used clinically. Previously, we have shown that the N30 is accompanied by both an increase of the power spectrum of the ongoing beta-gamma EEG (event related synchronization, ERS) and by a reorganization (phase-locking) of the spontaneous phase of this rhythm (inter-trials coherency, ITC). In order to localize its sources taking into account both the phasic and oscillatory aspects of the phenomenon, we here apply swLORETA methods on averaged signals of the event-related potential (ERP) from a 128 scalp-electrodes array in time domain and also on raw EEG signals in frequency domain at the N30 peak latency. We demonstrate that the two different mechanisms that generate the N30 component power increase (ERS) and phase locking (ITC) across EEG trials are spatially localized in overlapping areas in the precentral cortex, namely the motor cortex (BA4) and the premotor cortex (BA6). From this common region, the generator of the N30 event-related potential expands toward the posterior part of BA4, the anterior part of BA6 and the prefrontal cortex (BA9). These latter areas also present significant ITC sources in the beta-gamma frequency range, but without significant power increase of this rhythm. This demonstrates that N30 results from network activity that depends on distinct oscillating and phasic generators localized in the frontal cortex.
Collapse
Affiliation(s)
- A M Cebolla
- Laboratory of Neurophysiology and Movement Biomechanics, Université Libre de Bruxelles, Brussels, Belgium
| | | | | | | |
Collapse
|
30
|
Legon W, Dionne JK, Meehan SK, Staines WR. Non-dominant hand movement facilitates the frontal N30 somatosensory evoked potential. BMC Neurosci 2010; 11:112. [PMID: 20822535 PMCID: PMC2940928 DOI: 10.1186/1471-2202-11-112] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2010] [Accepted: 09/07/2010] [Indexed: 11/16/2022] Open
Abstract
Background Previous literature has shown that the frontal N30 is increased during movement of the hand contralateral to median nerve stimulation. This finding was a result of non-dominant left hand movement in right-handed participants. It is unclear however if the effect depends upon non-dominant hand movement or if this is a generalized phenomenon across the upper-limbs. This study tests the effect of dominant and non-dominant hand movement upon contralateral frontal and parietal somatosensory evoked potentials (SEPs) and further tests if this relationship persists in left hand dominant participants. Median nerve SEPs were elicited from the wrist contralateral to movement in both right hand and left hand dominant participants alternating the movement hand in separate blocks. Participants were required to volitionally squeeze (~ 20% of a maximal voluntary contraction) a pressure-sensitive bulb every ~3 seconds with the hand contralateral to median nerve stimulation. SEPs were continuously collected during the task and individual traces were grouped into time bins relative to movement according to the timing of components of the Bereitschaftspotential. SEPs were then averaged and quantified from both FCZ and CP3/4 scalp electrode sites during both the squeeze task and at rest. Results The N30 is facilitated during non-dominant hand movement in both right and left hand dominant individuals. There was no effect for dominant hand movement in either group. Conclusions N30 amplitude increase may be a result of altered sensory gating from motor areas known to be specifically active during non-dominant hand movement.
Collapse
Affiliation(s)
- Wynn Legon
- Department of Kinesiology, University of Waterloo, 200 University Ave, West, Waterloo, Ontario N2L3G1, Canada
| | | | | | | |
Collapse
|
31
|
Miki K, Kida T, Tanaka E, Nagata O, Kakigi R. The impact of visual movement on auditory cortical responses: a magnetoencephalographic study. Exp Brain Res 2009; 194:597-604. [DOI: 10.1007/s00221-009-1735-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2008] [Accepted: 02/05/2009] [Indexed: 11/30/2022]
|