Neural Interface: Frontiers and Applications

Sun, Xiao; Huang, Sui; Wang, Ningyuan

doi:10.1007/978-981-13-2050-7_7

Cited by 5 publications

(5 citation statements)

References 65 publications

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“…Thus, our present findings have several important implications for electrical stimulation-based interactions of the brain. First, suprathreshold pulse amplitudes(e.g., 100 μA) are generally assumed to drive one AP per pulse and lead to increased activation as amplitude increases by recruiting more neurons(11, 15, 30). Instead, we find individual neurons are highly sensitive to pulse amplitude because it determines the perturbation of channel state and therefore length of induced dynamic loops.…”

Section: Discussionmentioning

confidence: 99%

Pulsatile electrical stimulation creates predictable, correctable disruptions in neural firing

Steinhardt¹,

Mitchell

Cullen

et al. 2021

Preprint

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Electrical stimulation of neural responses is used both scientifically in brain mapping studies and in many clinical applications such as cochlear, vestibular, and retinal implants. Due to safety considerations, stimulation of the nervous system is restricted to short biphasic pulses. Despite decades of research and development, neural implants are far from optimal in their ability to restore function and lead to varying improvements in patients. In this study, we provide an explanation for how pulsatile stimulation affects individual neurons and therefore leads to variability in restoration of neural responses. The explanation is grounded in the physiological response of channels in the axon and represented with mathematical rules that predict firing rate as a function of pulse rate, pulse amplitude, and spontaneous activity. We validate these rules by showing that they predict recorded vestibular afferent responses in macaques and discuss their implications for designing clinical stimulation paradigms and electrical stimulation-based experiments.

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Section: Discussionmentioning

confidence: 99%

Pulsatile electrical stimulation creates predictable, correctable disruptions in neural firing

Steinhardt¹,

Mitchell

Cullen

et al. 2021

Preprint

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“…Efforts have been made to extend the motion intention classification into multiple DOF [42], and proportional activation of each motion is based on the sEMG amplitude of related DOF independently [43]. Furthermore, another advanced simultaneous and proportional control (SPC) method [44] was proposed to restore an intuitive and coordinated joint control of multiple-DOF hand prostheses for upper-limb amputees.…”

Section: Myoelectrical Control Of Bionic Handmentioning

confidence: 99%

Biorealistic hand prosthesis with compliance control and noninvasive somatotopic sensory feedback

Lan

Zhang

et al. 2023

Prog. Biomed. Eng.

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Significant advances have been made to improve control and to provide sensory functions for bionic hands. However, great challenges remain limiting wide acceptance of bionic hands due to inadequate bi-directional neural compatibility with human users. Recent research has brought to light the necessity for matching neuromechanical behaviors between the prosthesis and the sensorimotor system of amputees. A novel approach to achieving greater neural compatibility leverages the technology of biorealistic modeling with real-time computation. These studies have demonstrated a promising outlook that this unique approach may transform the performance of hand prostheses. Simultaneously, a non-invasive technique of somatotopic sensory feedback has been developed based on evoked tactile sensation (ETS) for conveying natural, intuitive and digit-specific tactile information to users. This article reports the recent work in these two important aspects of sensorimotor functions in prosthetic research. A background review is presented first on the state-of-the-art of bionic hand and the various techniques to deliver tactile sensory information to users. Then the progress in developing the novel biorealistic hand prosthesis and the technique of non-invasive ETS feedback is highlighted. Finally, challenges to future development of the biorealistic hand prosthesis and implementing the ETS feedback are discussed with respect to shaping a next-generation hand prosthesis.

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“…The most practical and technologically matured, noninvasive way to transfer control commands from the user to a prosthetic device is electromyography (EMG) (Zheng, 2019). People with lower limb amputations are able to volitionally use their residual muscles for EMG-based control Huang, 2018, 2019).…”

Section: Introductionmentioning

confidence: 99%

Intuitive and versatile bionic legs: a perspective on volitional control

Voß,

Koelewijn,

Beckerle

2024

Front. Neurorobot.

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Active lower limb prostheses show large potential to offer energetic, balance, and versatility improvements to users when compared to passive and semi-active devices. Still, their control remains a major development challenge, with many different approaches existing. This perspective aims at illustrating a future leg prosthesis control approach to improve the everyday life of prosthesis users, while providing a research road map for getting there. Reviewing research on the needs and challenges faced by prosthesis users, we argue for the development of versatile control architectures for lower limb prosthetic devices that grant the wearer full volitional control at all times. To this end, existing control approaches for active lower limb prostheses are divided based on their consideration of volitional user input. The presented methods are discussed in regard to their suitability for universal everyday control involving user volition. Novel combinations of established methods are proposed. This involves the combination of feed-forward motor control signals with simulated feedback loops in prosthesis control, as well as online optimization techniques to individualize the system parameters. To provide more context, developments related to volitional control design are touched on.

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Neural Interface: Frontiers and Applications

Cited by 5 publications

References 65 publications

Pulsatile electrical stimulation creates predictable, correctable disruptions in neural firing

Pulsatile electrical stimulation creates predictable, correctable disruptions in neural firing

Biorealistic hand prosthesis with compliance control and noninvasive somatotopic sensory feedback

Intuitive and versatile bionic legs: a perspective on volitional control

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