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Meneghetti N, Dedola F, Gavryusev V, Sancataldo G, Turrini L, de Vito G, Tiso N, Vanzi F, Carpaneto J, Cutrone A, Pavone FS, Micera S, Mazzoni A. Direct activation of zebrafish neurons by ultrasonic stimulation revealed by whole CNS calcium imaging. J Neural Eng 2020; 17:056033. [DOI: 10.1088/1741-2552/abae8b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Nguyen TAK, DiGiovanna J, Cavuscens S, Ranieri M, Guinand N, van de Berg R, Carpaneto J, Kingma H, Guyot JP, Micera S, Fornos AP. Characterization of pulse amplitude and pulse rate modulation for a human vestibular implant during acute electrical stimulation. J Neural Eng 2016; 13:046023. [DOI: 10.1088/1741-2560/13/4/046023] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Rigosa J, Panarese A, Dominici N, Friedli L, van den Brand R, Carpaneto J, DiGiovanna J, Courtine G, Micera S. Decoding bipedal locomotion from the rat sensorimotor cortex. J Neural Eng 2015; 12:056014. [PMID: 26331532 DOI: 10.1088/1741-2560/12/5/056014] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
OBJECTIVE Decoding forelimb movements from the firing activity of cortical neurons has been interfaced with robotic and prosthetic systems to replace lost upper limb functions in humans. Despite the potential of this approach to improve locomotion and facilitate gait rehabilitation, decoding lower limb movement from the motor cortex has received comparatively little attention. Here, we performed experiments to identify the type and amount of information that can be decoded from neuronal ensemble activity in the hindlimb area of the rat motor cortex during bipedal locomotor tasks. APPROACH Rats were trained to stand, step on a treadmill, walk overground and climb staircases in a bipedal posture. To impose this gait, the rats were secured in a robotic interface that provided support against the direction of gravity and in the mediolateral direction, but behaved transparently in the forward direction. After completion of training, rats were chronically implanted with a micro-wire array spanning the left hindlimb motor cortex to record single and multi-unit activity, and bipolar electrodes into 10 muscles of the right hindlimb to monitor electromyographic signals. Whole-body kinematics, muscle activity, and neural signals were simultaneously recorded during execution of the trained tasks over multiple days of testing. Hindlimb kinematics, muscle activity, gait phases, and locomotor tasks were decoded using offline classification algorithms. MAIN RESULTS We found that the stance and swing phases of gait and the locomotor tasks were detected with accuracies as robust as 90% in all rats. Decoded hindlimb kinematics and muscle activity exhibited a larger variability across rats and tasks. SIGNIFICANCE Our study shows that the rodent motor cortex contains useful information for lower limb neuroprosthetic development. However, brain-machine interfaces estimating gait phases or locomotor behaviors, instead of continuous variables such as limb joint positions or speeds, are likely to provide more robust control strategies for the design of such neuroprostheses.
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Affiliation(s)
- J Rigosa
- The BioRobotics Institute, Scuola Superiore Sant'Anna, Pisa, Italy. Bertarelli Foundation Chair in Translational Neuralengineering, Center for Neuroprosthetics and Institute of Bioengineering, School of Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
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Micera S, Raspospovic S, Capogrosso M, Carpaneto J, Granata G, Oddo C, Cipriani C, Stieglitz T, Schuettler M, Navarro X, Raffo L, Barbaro M, Rossini P. P190: NEurocontrolled BIdirectional Artificial upper limb and hand prosthesiS (NEBIAS). Clin Neurophysiol 2014. [DOI: 10.1016/s1388-2457(14)50328-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Carpaneto J, Umiltà M, Fogassi L, Murata A, Gallese V, Micera S, Raos V. Decoding the activity of grasping neurons recorded from the ventral premotor area F5 of the macaque monkey. Neuroscience 2011; 188:80-94. [DOI: 10.1016/j.neuroscience.2011.04.062] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2010] [Revised: 04/14/2011] [Accepted: 04/29/2011] [Indexed: 10/18/2022]
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Benvenuto A, Raspopovic S, Hoffmann KP, Carpaneto J, Cavallo G, Di Pino G, Guglielmelli E, Rossini L, Rossini PM, Tombini M, Micera S. Intrafascicular thin-film multichannel electrodes for sensory feedback: Evidences on a human amputee. Annu Int Conf IEEE Eng Med Biol Soc 2011; 2010:1800-3. [PMID: 21095936 DOI: 10.1109/iembs.2010.5626401] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The performance of motor neuroprostheses or robotic arm prostheses can be significantly improved by delivering sensory feed-back related to the ongoing motor task (e.g. the slippage of an object during grasping). Microfabricated neural electrodes implantable in peripheral nervous system seem a promising approach to this aim. New generation of thin-film intrafascicular electrodes longitudinally implantable in peripheral nerves (tf-LIFE4) has been developed and tested for afferent stimulation in human amputee case study.
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Affiliation(s)
- A Benvenuto
- "Campus Bio-Medico di Roma" University, 00128 Rome, Italy.
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Carpaneto J, Cutrone A, Bossi S, Sergi P, Citi L, Rigosa J, Rossini PM, Micera S. Activities on PNS neural interfaces for the control of hand prostheses. Annu Int Conf IEEE Eng Med Biol Soc 2011; 2011:4637-4640. [PMID: 22255371 DOI: 10.1109/iembs.2011.6091148] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The development of interfaces linking the human nervous system with artificial devices is an important area of research. Several groups are working on the development of devices able to restore sensory-motor function in subjects affected by neurological disorders, injuries or amputations. Neural electrodes implanted in peripheral nervous system, and in particular intrafascicular electrodes, seem to be a promising approach for the control of hand prosthesis thanks to the possibility to selectively access motor and sensory fibers for decoding motor commands and delivering sensory feedback. In this paper, activities on the use of PNS interfaces for the control of hand prosthesis are presented. In particular, the design and feasibility study of a self-opening neural interface is presented together with the decoding of ENG signals in one amputee to control a dexterous hand prosthesis.
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Affiliation(s)
- J Carpaneto
- BioRobotics Institute, Scuola Superiore Sant’Anna, 56127 Pisa Italy
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Martelloni C, Carpaneto J, Micera S. Classification of upper arm EMG signals during object-specific grasp. Annu Int Conf IEEE Eng Med Biol Soc 2009; 2008:5061-4. [PMID: 19163854 DOI: 10.1109/iembs.2008.4650351] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Electromyographic (EMG) signals can represent an interesting solution to control artificial hands because they are easy to record and can allow the user to control different robotic systems. However, after limb amputation the 'homologous' muscles are no more available to control the prosthetic device and for this reason complex pattern recognition approaches have to be developed to extract the voluntary commands by the user. This makes the control strategy less natural and acceptable and asks for alternative approaches. At the same time, it has been recently shown that (in monkeys) it is possible to discriminate grasping tasks just analyzing the activation onset/offset of upper limb muscles during the reaching phase. This kind of information can be very interesting because it can allow the development of a natural EMG-based control strategy based on the natural muscular activities selected by the central nervous system. In this paper, preliminary experiments have been carried out in order to verify whether these results can be confirmed also in human beings. In particular, a support vector machine (SVM) based pattern recognition algorithm has been developed and used for the prediction of grip types from the EMG recorded from proximal and distal muscles during reach to grasp movements of three able bodied subjects.
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Affiliation(s)
- C Martelloni
- ARTS Lab, Scuola Superiore Sant'Anna, viale R. Piaggio 34, 56025 Pontedera, Pisa Italy
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Micera S, Rigosa J, Carpaneto J, Citi L, Raspopovic S, Guglielmelli E, Benvenuto A, Rossini L, Di Pino G, Cavallo G, Carrozza MC, Cipriani C, Hoffmann KP, Dario P, Rossini PM. On the control of a robot hand by extracting neural signals from the PNS: preliminary results from a human implantation. Annu Int Conf IEEE Eng Med Biol Soc 2009; 2009:4586-4589. [PMID: 19963845 DOI: 10.1109/iembs.2009.5332764] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The development of hybrid neuroprosthetic systems (HBSs) linking the human nervous system with artificial devices is an important area of research that is currently addressed by several groups to restore sensorimotor function in people affected by different disabilities. It is particularly important to establish a fast, intuitive, bidirectional flow of information between the nervous system of the user and the smart robotic device. Among the possible solutions to achieve this goal, interfaces with the peripheral nervous system and in particular intraneural electrodes can represent an interesting choice. In the present study, thin-film longitudinal intra-fascicular electrodes were implanted in the median and ulnar nerves of an amputee. The possibility of restoring the bidirectional link between the subject and the external world was investigated during a 4 week trial. The result showed that both the extraction of motor information and the restoration of sensory function are possible.
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Affiliation(s)
- S Micera
- ARTS Lab, Scuola Superiore Sant'Anna, Pisa, Italy.
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Vitiello N, Olcese U, Oddo CM, Carpaneto J, Micera S, Carrozza MC, Dario P. A simple highly efficient non invasive EMG-based HMI. Conf Proc IEEE Eng Med Biol Soc 2008; 2006:3403-6. [PMID: 17945773 DOI: 10.1109/iembs.2006.259467] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Muscle activity recorded non-invasively is sufficient to control a mobile robot if it is used in combination with an algorithm for its asynchronous analysis. In this paper, we show that several subjects successfully can control the movements of a robot in a structured environment made up of six rooms by contracting two different muscles using a simple algorithm. After a small training period, subjects were able to control the robot with performances comparable to those achieved manually controlling the robot.
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Affiliation(s)
- N Vitiello
- ARTS Lab., Scuola Superiore Sant'Anna, Pisa, Italy.
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Micera S, Sergi PN, Carpaneto J, Citi L, Bossi S, Koch KP, Hoffmann KP, Menciassi A, Yoshida K, Dario P. Experiments on the development and use of a new generation of intra-neural electrodes to control robotic devices. Conf Proc IEEE Eng Med Biol Soc 2006; 2006:2940-2943. [PMID: 17945747 DOI: 10.1109/iembs.2006.260346] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The development of interfaces linking the human nervous system with artificial devices is an important area of research and several groups are now addressing it. Interfaces represent the key enabling technology for the development of devices usable for the restoration of motor and sensory function in subjects affected by neurological disorders, injuries or amputations. For example, current hand prostheses use electromyographic (EMG) signals to extract volitional commands but this limits the possibility of controlling several degrees of freedom and of delivering sensory feedback. To achieve these goals, implantable neural interfaces are required. Among the candidate interfaces with the peripheral nervous system intra-neural electrodes seem to be an interesting solution due to their bandwidth and ability to access volition and deliver sensory feedback. However, several drawbacks have to be addressed in order to increase their usability. In this paper, experiments to address many of these issues are presented as part of the development of a new generation of intra-neural electrodes. The results showed seem to confirm that these new interfaces seem to have interesting properties and that they can represent a significant improvement of the state of the art. Extensive experiments will be carried out in the future to validate these results.
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Affiliation(s)
- S Micera
- ARTS & CRIM Labs, Scuola Superiore Sant'Anna, Pisa, Italy.
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Micera S, Carpaneto J, Posteraro F, Cenciotti L, Popovic M, Dario P. Characterization of upper arm synergies during reaching tasks in able-bodied and hemiparetic subjects. Clin Biomech (Bristol, Avon) 2005; 20:939-46. [PMID: 16061318 DOI: 10.1016/j.clinbiomech.2005.06.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2004] [Revised: 06/10/2005] [Accepted: 06/10/2005] [Indexed: 02/07/2023]
Abstract
BACKGROUND In the past, several studies showed the existence of a synergistic behavior between elbow and shoulder joints during reaching movements in able-bodied subjects. The aim of this paper was to characterize the modifications of upper arm synergies during reaching induced by stroke. METHODS Ten able-bodied right-handed subjects, eight right-handed subjects with hemiparesis affecting the right (dominant) upper limb participated in the experiments. The kinematics of shoulder and elbow joints have been recorded in all the participants during selected reaching movements. From the eight-like plots characterizing the relationship between shoulder and elbow angular velocities, a topological parameter (named as C approximately ) representing the linear approximation of the synergy between the two angular velocities has been extracted. FINDINGS The results of these experiments showed that C approximately could be used as a figure of merit for the comparison of performance in able-bodied and hemiparetic persons. The hemiparetic subjects showed a significantly higher spreading of the values of C approximately for the different reaching movements when compared with the performance of able-bodied subjects. INTERPRETATION This work showed that hemiparesis modified upper arm synergies and could provide a protocol for the assessment of upper limb function. Moreover, important applications of this method could be found in the development of biomimetic algorithms for the control of upper extremities during reaching in humanoid robots, and in the design of customized "games" in neurorehabilitation procedures implemented by using robotic and mechatronic platforms.
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Affiliation(s)
- S Micera
- ARTS Lab, Scuola Superiore Sant'Anna, Piazza Martiri della Liberta' 56127, Pisa, Italy.
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Carpaneto J, Micera S, Galardi G, Micheli A, Carboncini MC, Rossi B, Dario P. A protocol for the assessment of 3D movements of the head in persons with cervical dystonia. Clin Biomech (Bristol, Avon) 2004; 19:659-63. [PMID: 15288450 DOI: 10.1016/j.clinbiomech.2004.04.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2003] [Accepted: 04/07/2004] [Indexed: 02/07/2023]
Abstract
OBJECTIVE To design and test a protocol for the assessment of neck movements in patients affected by cervical dystonia by using an electromagnetic system. This approach could overcome the limits of the current assessment scales in this specific field. BACKGROUND Initial assessment and function recovery during treatments are diagnosed by the clinician using outcome scales which present many drawbacks in terms of easiness of use, sensitivity, and reliability. DESIGN A three-dimensional motion analysis system was used to record six different head movements. METHODS Six able-bodied subjects and 10 subjects affected by cervical dystonia participated in this study. For the different head movements three kinematic parameters (a symmetry index and two indexes related to the reduction of the range of motion) have been extracted in order to compare the performance of able-bodied and disabled persons. RESULTS The features selected allowed highlighting of the differences between able-bodied and disabled subjects for the degrees of freedom of the neck. CONCLUSIONS Using a motion analysis system, three kinematic features were extracted from head movements. They seem to allow a more objective assessment of the disability and a more appropriated strategy for the management of patients affected by cervical dystonia.
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Affiliation(s)
- J Carpaneto
- ARTS Lab, Polo Sant'Anna Valdera, Scuola Superiore Sant'Anna, viale Rinaldo Piaggio 34, Pontedera, 56025 Pisa, Italy
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Santarcangelo EL, Rendo C, Carpaneto J, Dario P, Micera S, Carli G. Does hypnotizability affect human upright stance? Arch Ital Biol 2004; 142:285-96. [PMID: 15260382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
Subjects highly (Highs) and low susceptible to hypnosis (Lows) show different imagery and attentional capabilities and also peculiar somatomotor, vegetative and electroencephalographic differences in basal and task conditions. Since attention is one of the main component of hypnotic susceptibility and also a relevant factor for postural control, the aim of the experiment was to study actual differences between Highs and Lows at the eyes closure during upright stance. Visual and motor imagery as well as attentional/disattentional capabilities were evaluated through psychological tests. Posture was monitored though Elite systems during upright stance with open and closed eyes. At the eyes closure, Highs and Lows exhibited a different body sway modulation. Possible different compensation mechanisms are suggested for the two groups and interactions between attentional/arousal systems responsible of hypnotic phenomenology and postural control are underlined.
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Affiliation(s)
- E L Santarcangelo
- Department of Physiology and Biochemistry, University of Pisa, Italy.
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