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Brain Activation Sequences Following Electrical Limb Stimulation of Normal and Paraplegic Subjects

Andreas A. Ioannides, Lichan Liu, Ara Khurshudyan, Roger Bodley, Vahe Poghosyan, Tadahiko Shibata, Jürgen Dammers, Ali Jamous
2002 NeuroImage  
We measured the MEG signal following electrical stimulation of upper and lower limbs in two normal and three clinically complete paraplegic subjects.  ...  Activation curves were computed from regions of interest defined around these areas. Activation of the SI foot area was observed in normal and paraplegic subjects when the upper limb was stimulated.  ...  ACKNOWLEDGMENTS We thank our paraplegic subjects for their participation in this study.  ... 
doi:10.1006/nimg.2002.1065 pmid:11969323 fatcat:5j6cc5t2ybb75akufh75vjrqie

Evidence for a Spinal Central Pattern Generator in Humansa

1998 Annals of the New York Academy of Sciences  
We show that epidural spinal cord stimulation can elicit step-like EMG activity and locomotor synergies in paraplegic subjects.  ...  Non-patterned electrical stimulation of the posterior structures of the lumbar spinal cord in subjects with complete, long-standing spinal cord injury, can induce patterned, locomotor-like activity.  ...  Rosenfeld, and A. M. Sherwood, for their help in developing the experimental design and data collection for this study.  ... 
doi:10.1111/j.1749-6632.1998.tb09062.x pmid:9928325 fatcat:t5pu5hzivrhjflcvtw3pcuuxrq

Novel therapeutic concepts to improve motor function after spinal cord injury

2012 Swiss Archives of Neurology and Psychiatry  
In this review, we sum marise recent findings in rats and humans that demonstrate the remarkable ability of rehabilitative training enabled by epidural electrical stimulation of lumbosacral segments and  ...  monoamine agonists to restore coordinated stand ing and walking movements in subjects with paralysing SCI.  ...  Collectively, these results suggest that the repetitive activation of unique combinations of sensorimotor c ircuits under the influence of distinct electrical and p harmacological stimulations and through  ... 
doi:10.4414/sanp.2012.02347 fatcat:efs34w5f3vhudjfudq25hsiibe

Whole-Body Adaptive Functional Electrical Stimulation Kinesitherapy Can Promote the Restoring of Physiological Muscle Synergies for Neurological Patients

Alessandro Scano, Robert Mihai Mira, Guido Gabbrielli, Franco Molteni, Viktor Terekhov
2022 Sensors  
Functional electrical stimulation is a technique that helps regain motor function, assisting patients in daily life activities and in rehabilitation practices.  ...  Methods: Twenty-four chronic neurologic patients and 9 healthy subjects were recruited in this study. The patient group was further subdivided in 3 subgroups: hemiplegic, tetraplegic and paraplegic.  ...  It is known that if the activation of the muscle mass generated by the electrical impulse corresponds to the voluntary physiological activation [25] , the brain recognizes stimuli as its own and automatically  ... 
doi:10.3390/s22041443 pmid:35214345 pmcid:PMC8877830 fatcat:w6e3dlovyfg4hhim4zkxzjquna

Data-Driven Control Design for Neuroprotheses: A Virtual Reference Feedback Tuning (VRFT) Approach

F. Previdi, T. Schauer, S.M. Savaresi, K.J. Hunt
2004 IEEE Transactions on Control Systems Technology  
This paper deals with design of feedback controllers for knee joint movement of paraplegics using functional electrical stimulation (FES) of the paralyzed quadriceps muscle group.  ...  Linear and nonlinear controllers have been designed and experimentally tested, preliminarily on a healthy subject and finally on a paraplegic patient.  ...  In a paraplegic subject the muscles of the lower limbs are intact and capable of effective contraction, but there is the fundamental lack of stimulation from the brain through the injured spinal cord.  ... 
doi:10.1109/tcst.2003.821967 fatcat:74dwvf7ktrf6njw45kwthkejny

A Neuro-Sliding-Mode Control With Adaptive Modeling of Uncertainty for Control of Movement in Paralyzed Limbs Using Functional Electrical Stimulation

A. Ajoudani, A. Erfanian
2009 IEEE Transactions on Biomedical Engineering  
During the past several years, several strategies have been proposed for control of joint movement in paraplegic subjects using functional electrical stimulation (FES), but developing a control strategy  ...  Extensive simulations and experiments on healthy and paraplegic subjects are provided to demonstrate the robustness, stability, and tracking accuracy of the proposed neuroadaptive SMC.  ...  The paraplegic subjects were active participants in a rehabilitation research program involving daily electrically stimulated exercise of their lower limbs (either seated or during standing and walking  ... 
doi:10.1109/tbme.2009.2017030 pmid:19336284 fatcat:qpr4x4auw5g5lkrn23ofjl7oiy

Changes of non-affected upper limb cortical representation in paraplegic patients as assessed by fMRI

A. Curt
2002 Brain  
We report changes in brain activation patterns during movements of nonaffected body parts in paraplegic patients with spinal cord injury (SCI).  ...  Single subject and group analyses were performed, and the activation volumes, maximum t values and centres of gravity were calculated.  ...  Acknowledgements This work was supported by the Swiss National Research Program NRP 38 4038±052837/1, the NCCR on Neural Plasticity and Repair, and by Swiss National Science Foundation grant 3152±062025  ... 
doi:10.1093/brain/awf250 pmid:12390981 fatcat:zty2su3skbhy3d5ly2h7ushm44

Neuromodulation of lower limb motor control in restorative neurology

Karen Minassian, Ursula Hofstoetter, Keith Tansey, Winfried Mayr
2012 Clinical neurology and neurosurgery (Dutch-Flemish ed. Print)  
This review focuses on functional electrical stimulation (FES) and spinal cord stimulation (SCS) that utilize remaining capabilities of the distal apparatus of spinal cord, peripheral nerves and muscles  ...  In movement disorders, contemporary neuromodulation therapies target brain structures, cranial nerves, spinal cord, and peripheral nerves and influence the nervous system activity by the interaction of  ...  Acknowledgements The authors acknowledge the support of the Austrian Science  ... 
doi:10.1016/j.clineuro.2012.03.013 pmid:22464657 pmcid:PMC3341569 fatcat:2yxgwqchv5hilpq52rmctngmhu


Ronald Melzack, Joel Katz
2012 Wiley Interdisciplinary Reviews: Cognitive Science  
These brain processes actively participate in the selection, abstraction, and synthesis of information from the total sensory input.  ...  Pain processes do not begin with the stimulation of receptors.  ...  neuronal activity may contribute to the perception of pain. 34 Studies of patients undergoing electrical brain stimulation during brain surgery reveal that pain is rarely elicited by test stimuli unless  ... 
doi:10.1002/wcs.1201 pmid:26304172 fatcat:podjxi63u5e7hlrkjxgzriovnm

Effects of Functional Electrical Stimulation Cycling of Different Duration on Viscoelastic and Electromyographic Properties of the Knee in Patients with Spinal Cord Injury

Antonino Casabona, Maria Stella Valle, Claudio Dominante, Luca Laudani, Maria Pia Onesta, Matteo Cioni
2020 Brain Sciences  
The benefits of functional electrical stimulation during cycling (FES-cycling) have been ascertained following spinal cord injury.  ...  Noteworthy, biomechanical changes were associated with an increase of muscle activity and changes in latency of muscle activity only for 20-min, with anticipated response times for RF (p < 0.001) and delayed  ...  Conflicts of Interest: The authors declare do not have any potential conflict of interest.  ... 
doi:10.3390/brainsci11010007 pmid:33374653 fatcat:3z4yilvpyrhhzaea54kqlm7afa

Investigation of Maximum Voluntary Contraction Activity during Robotic Gait

2022 Journal of Polytechnic  
The sequence of which muscles are functioning in terms of the duration of muscle activity be seen in Figure 9 .  ...  EMG signals of paraplegic patients The EMG signals generated by the GMA, GME, ILP, VM, TA, BF and GM muscles, which are active during gait training, of 6 paraplegic and 2 hemiplegic patients with lower  ...  AUTHORS' CONTRIBUTIONS Uğur FİDAN: Performed the writing of the article and the analysis of the data İsmail ÇALIKUŞU: Performed the carry out data collection, analysis and article writing..  ... 
doi:10.2339/politeknik.1051988 fatcat:oiknosl7x5etdklupl56cfcq4a

Training with brain-machine interfaces, visuo-tactile feedback and assisted locomotion improves sensorimotor, visceral, and psychological signs in chronic paraplegic patients

Solaiman Shokur, Ana R. C. Donati, Debora S. F. Campos, Claudia Gitti, Guillaume Bao, Dora Fischer, Sabrina Almeida, Vania A. S. Braga, Patricia Augusto, Chris Petty, Eduardo J. L. Alho, Mikhail Lebedev (+3 others)
2018 PLoS ONE  
Here, we report significant clinical improvement in a group of seven chronic SCI patients (six AIS A, one AIS B) following a 28-month, multi-step protocol that combined training with non-invasive brain-machine  ...  Spinal cord injury (SCI) induces severe deficiencies in sensory-motor and autonomic functions and has a significant negative impact on patients' quality of life.  ...  During gait training, subjects were guided to attempt to execute lower-limb motor tasks actively, despite the SCI.  ... 
doi:10.1371/journal.pone.0206464 pmid:30496189 fatcat:3d2sse37mndmrmzvfggwmj7j2q

What Disconnection Tells about Motor Imagery: Evidence from Paraplegic Patients

Hatem Alkadhi, Peter Brugger, Sabina Hotz Boendermaker, Gerard Crelier, Armin Curt, Marie-Claude Hepp-Reymond, Spyros S. Kollias
2004 Cerebral Cortex  
Brain activation during motor imagery has been the subject of a large number of studies in healthy subjects, leading to divergent interpretations with respect to the role of descending pathways and kinesthetic  ...  Motor imagery in SCI patients activated in parallel both the motor execution and motor imagery networks of healthy subjects.  ...  None had suffered a brain lesion, and all had a normal Glasgow Coma Scale (Teasdale and Jennett, 1974) following SCI.  ... 
doi:10.1093/cercor/bhh116 pmid:15238440 fatcat:6y5v62giwvdklmrrznzzqpskla

Sensory-Motor Coupling in Rehabilitation Robotics [chapter]

Alejandro Hernandez-Arieta, Konstantinos Dermitzakis, Dana Damian, Max Lungarella, Rolf Pfeifer
2008 Service Robot Applications  
Results At the beginning of each experimental session, in order to establish a common ground for the active experimentation that followed, all subjects were subjected to passive electrical stimulation.  ...  triggered the active administration of electrical stimulation.  ...  This book provides only a small example of this research activity, but it covers a great deal of what has been done in the field recently.  ... 
doi:10.5772/6066 fatcat:bgkzknisqfegldv6asky7cbbae

Cybernetic methods in clinical neurophysiology

L. Gyergyek, J. K. Trontelj
1975 Acta Cybernetica  
This paper gives a short review of some of our recent activities which have been developed in our collaboration with the Institute of Clinical Neurophysiology at Ljubljana.  ...  In the second part of our paper we wish to present some of the results of our attempts to study memory and learning in simple neural networks in man.  ...  The simplest pair of stimulation patterns satisfying this requirement consisted of two stimuli of different strengths, in one pattern alternating regularly while in the other pattern the sequence of the  ... 
dblp:journals/actaC/GyergyekT76 fatcat:yvqtmogrdzb4bdda2rjhx4nb5i
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