Characterization of the ENG Activity from a Digital Nerve for Feedback Control in Grasp Neuroprostheses

Riso, Ronald Raymond; Slot, Peter Jacob

doi:10.1007/978-3-642-80211-9_42

Cited by 4 publications

(4 citation statements)

References 14 publications

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“…It can be argued that the initial phasic response, and the response decrease at the start of the plateau phase are also properties of cutaneous afferents, however, there was never present an "off-response" at the start of the unloading phase of the ramp stimulus. Such an off-response would have been present if the responses were of cutaneous origin [12], [44], [47]. Furthermore, the amplitude of the static response during the plateau was appreciable and much larger then what would be expected from cutaneous responses.…”

Section: A Origins Of the Evoked Afferent Activitymentioning

confidence: 99%

“…These demonstrations have been limited to laboratory environments because of a lack of physically small and cosmetically acceptable sensors required to provide the feedback signals [7]. Natural sensors [13], [14], [16], [17], [42], [44], [47] such as those found in the skin, muscles, tendons and joints present an attractive alternative to artificial sensors for FES purposes because they are present throughout the body and should contain information useful for feedback control. Moreover, preliminary studies have indicated that much of the peripheral sensory apparatus below the level of the spinal lesion in spinal injured man is viable.…”

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confidence: 99%

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Nerve cuff recordings of muscle afferent activity from tibial and peroneal nerves in rabbit during passive ankle motion

Riso

Mosallaie

Jensen

et al. 2000

IEEE Trans. Rehab. Eng.

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Activity from muscle afferents regarding ankle kinesthesia was recorded using cuff electrodes in a rabbit preparation in which tactile input from the foot was eliminated. The purpose was to determine if such activity can provide information useful in controlling functional electrical stimulation (FES) systems that restore mobility in spinal injured man. The rabbit's ankle was passively flexed and extended while the activity of the tibial and peroneal nerves was recorded. Responses to trapezoidal stimulus profiles were investigated for excursions from 10 to 60 using velocities from 5 /s to 30 /s and different initial ankle positions. The recorded signals mainly reflect activity from primary and secondary muscle afferents. Dorsiflexion stretched the ankle extensors and produced velocity dependent activity in the tibial nerve, and this diminished to a tonic level during the stimulus plateau. The peroneal nerve was silent during dorsiflexion, but was activated by stretch of the peroneal muscles during ankle extension. The responses of the two nerves behaved in a reciprocal manner, but exhibited considerable hysteresis, since motion that relaxed the stretch to the driving muscle produced an immediate cessation of the prior stretch induced activity. A noted difference between the tibial and peroneal nerve responses is that the range of joint position change that activated the flexor afferents was greater then for the extensor afferents. Ankle rotation at higher velocities increased the dynamic stretch evoked responses during the stimulus ramp but showed no effect on the tonic activity during the stimulus plateau. Prestretching the muscles by altering the initial position increased the response to the ramp movement, however, for the peroneal nerve, when the prestretch brought the flexor muscles near to their maximal lengths, the response to additional stretch provided by the ramp movement was diminished. The results indicate that the whole nerve recorded muscle afferent activity may be useful for control of FES assisted standing, because it can indicate the direction of rotation of the passively moved ankle joint, along with coarse information regarding the rate of movement and static joint position. Index Terms-Functional electrical stimulation (FES), muscle afferents, natural sensors, nerve cuff recordings. I. INTRODUCTION F UNCTIONAL electrical stimulation (FES) can be used to restore function in individuals with paralysis [48]. While the forces generated in muscles activated using FES can be Manuscript

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Section: A Origins Of the Evoked Afferent Activitymentioning

confidence: 99%

mentioning

confidence: 99%

Nerve cuff recordings of muscle afferent activity from tibial and peroneal nerves in rabbit during passive ankle motion

Riso

Mosallaie

Jensen

et al. 2000

IEEE Trans. Rehab. Eng.

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“…in humans, cuff electrodes for sensory recordings have been used in long-term implants in hemiplegic subjects, for the control of dropfoot stimulation (HAUGLAND and SINKJAER, 1995;UPSHAW and SINKJAER, 1998), and in tetraplegic spinal cord-injured (SCI) subjects, for the control of hand-grasp RISO et al, 1995;RISO and SLOT, 1996;SLOT et al, 1997). See SINKJAER et al (1999) for a review.…”

Section: Introductionmentioning

confidence: 99%

Implantable telemeter for long-term electroneurographic recordings in animals and humans

Donaldson

Zhang

Perkins

et al. 2003

Med. Biol. Eng. Comput.

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A system is described that amplifies an electroneurographic signal (ENG) from a tripolar electrode nerve cuff and transmits it from the implanted amplifier to an external drive box. The output was raw ENG, bandpass filtered from 800 to 8000 Hz. The implant was powered by radio-frequency induction and operated for coil-to-coil separations up to 30 mm. The testing and performance of the system is described. The input-referred noise was never more than 1 microV RMS, and, at some positions of the radio-frequency field, was 0.7 microV, close to the expected value for the amplifier used. The common-mode rejection ratio (CMRR) depended on the impedance imbalance from the cuff and the length of input cable. Devices with a short cable and low source impedance had CMRR of 84 dB, but, with 31 cm of cable and a real cuff, the CMRR fell to 66 dB. Recovery from a stimulus artifact took 5 ms. The responses of the cuff to external potential gradients and to common-mode signals are described theoretically or by simulation. The devices are available for use in neuroprosthetic or neurophysiological research.

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“…There have been several instances where recordings of 'whole nerve' have been useful for neuro-prosthetic devices Sinkjaer et al 1999;Riso and Slot 1996). Using the microtube array it is possible to select various combinations of channels to create the DevelopmentofMicro-channelArraysforPeripheralNerveRecording highest quality composite signals.…”

Section: Utility Of Combined Activity From Different Channelsmentioning

confidence: 99%

Development of Micro-channel Arrays for Peripheral Nerve Recording

Edell

Riso

Herr

2014

Proceedings of the 2nd International Congress on Neurotechnology, Electronics and Informatics

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MicroTube Array (MTA) technology was developed to create an axon regeneration interface for exchanging motor and sensory data with residual nerves. Future clinical application will include sensory-motor transducers for individuals with limb amputation. In this pilot study, a small matrix (9) of MTAs 1, 3 and 5mm long with either 99um, 200um or 287um diameter MicroTubes (MTs) filling nerve cuffs of 3mm in diameter were implanted in tibial nerve of NZW rabbits and histologically evaluated after more than 6 months post-op. Full regeneration was observed in all 3 lengths for 287um MTAs, and for all three diameters of MTs with 1mm length. The remaining implants were mechanically dislodged during the healing phase. A second implant set was designed to include 12 platinum-iridium wire electrodes direct wired to a percutaneous connector. Successful recordings of useful amplitudes were observed during reflex righting behaviour for over 2 years before the anticipated wire breakage ended the experiments. 5

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Characterization of the ENG Activity from a Digital Nerve for Feedback Control in Grasp Neuroprostheses

Cited by 4 publications

References 14 publications

Nerve cuff recordings of muscle afferent activity from tibial and peroneal nerves in rabbit during passive ankle motion

Nerve cuff recordings of muscle afferent activity from tibial and peroneal nerves in rabbit during passive ankle motion

Implantable telemeter for long-term electroneurographic recordings in animals and humans

Development of Micro-channel Arrays for Peripheral Nerve Recording

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