Perceptual Embodiment of Prosthetic Limbs by Transcutaneous Electrical Nerve Stimulation

Mulvey, Matthew R; Fawkner, Helen; Radford, Helen; Johnson, Mark I.

doi:10.1111/j.1525-1403.2011.00408.x

Cited by 48 publications

(41 citation statements)

References 26 publications

(42 reference statements)

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“…In a preliminary study using a modified version of the RHI we found that the sensation of TENS could be projected into an artificial hand in able-limbed participants resulting in a sense of perceptual embodiment and agency in the artificial hand [16]. However, we were unable to discount the influence of a learning effect due to repeated exposure to the RHI as the order of the four test conditions (vision only (i.e.…”

Section: Introductionmentioning

confidence: 75%

An investigation into the perceptual embodiment of an artificial hand using transcutaneous electrical nerve stimulation (TENS) in intact-limbed individuals

Mulvey

Fawkner

Johnson

2014

THC

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BACKGROUND: Perceptual embodiment of an artificial limb aids manual control of prostheses and can be facilitated by somatosensory feedback. We hypothesised that transcutaneous electrical nerve stimulation (TENS) may facilitate perceptual embodiment of artificial limbs. OBJECTIVE: To determine the effect of TENS on perceptual embodiment of an artificial hand in 32 intact-limbed participants. METHODS: Participants were exposed to four experimental conditions in four counterbalanced blocks: (i) Vision (V) watching an artificial hand positioned congruently to the real hand (out of view); (ii) Vision and strong non-painful TENS in the real hand (V+T); Vision and Stroking (V+S) of the artificial and real hand with a brush; Vision, Stroking and TENS (V+S+T) watching artificial hand being stroked whilst real hand was stroked and receiving TENS. RESULTS: Repeated measure ANOVA detected effects for Condition (P < 0.001), Block (P < 0.001) and Condition x Block interaction (P < 0.001). Pairwise comparisons detected more intense perceptual embodiment for V+S+T compared with V (P < 0.001) and V+T (P < 0.001), and for V+S compared with V (P < 0.001) and V+T (P < 0.001).The intensity of perceptual embodiment increased for later blocks (P < 0.001). CONCLUSIONS: A sensation of TENS was generated within the artificial hand in individuals with intact limbs and this facilitated perceptual embodiment. The magnitude of effect was modest.

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Section: Introductionmentioning

confidence: 75%

An investigation into the perceptual embodiment of an artificial hand using transcutaneous electrical nerve stimulation (TENS) in intact-limbed individuals

Mulvey

Fawkner

Johnson

2014

THC

Self Cite

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“…The more straightforward situation to think about is certainly the case of amputation. As discussed previously, a key role of functional prostheses is to allow the rebuilt of a full sense of ownership and agency of the prosthesis through a process of training-induced, embodiment (Ehrsson et al, 2008; Marasco et al, 2011; D’Alonzo and Cipriani, 2012; Mulvey et al, 2012). In this respect, the plasticity induced by functional prostheses (Di Pino et al, 2009; Rossini et al, 2010; Maruishi et al, 2004), targets similar sensorimotor brain areas as those modulated by paradigms inducing illusory sense of ownership for alien body parts and could constitute the basis of a full inclusion of external devices into the self as well as the extension of visuo-tactile integration properties to an external augmentation device (Marini et al, 2014).…”

Section: Resultsmentioning

confidence: 99%

“…Hence, it is plausible to suppose that to enrich the user experience of prosthesis control with a sensory feedback could be a main determinant to prompt the embodiment of prosthetic limbs. Whole nerve electrical stimulation (Mulvey et al, 2012) and vibrotactile stimulation (brushstroke or stick tapping) (D’Alonzo and Cipriani, 2012) of the real hand are able to substitute a real touch in the processes needed to evoke the rubber hand illusion. A pressure stimulator that translated the data acquired by a load cell mounted on a prosthesis into tactile stimulation of the skin reinnervated with nerves originally devoted to the lost hand was able to evoke the rubber hand illusion for a prosthetic device in patients undergoing target muscle reinnervation (Marasco et al, 2011).…”

Section: Plasticity Induced By Artifact Embodimentmentioning

confidence: 99%

Augmentation-related brain plasticity

Pino

Maravita

Zollo

et al. 2014

Front. Syst. Neurosci.

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Today, the anthropomorphism of the tools and the development of neural interfaces require reconsidering the concept of human-tools interaction in the framework of human augmentation. This review analyses the plastic process that the brain undergoes when it comes into contact with augmenting artificial sensors and effectors and, on the other hand, the changes that the use of external augmenting devices produces in the brain. Hitherto, few studies investigated the neural correlates of augmentation, but clues on it can be borrowed from logically-related paradigms: sensorimotor training, cognitive enhancement, cross-modal plasticity, sensorimotor functional substitution, use and embodiment of tools. Augmentation modifies function and structure of a number of areas, i.e., primary sensory cortices shape their receptive fields to become sensitive to novel inputs. Motor areas adapt the neuroprosthesis representation firing-rate to refine kinematics. As for normal motor outputs, the learning process recruits motor and premotor cortices and the acquisition of proficiency decreases attentional recruitment, focuses the activity on sensorimotor areas and increases the basal ganglia drive on the cortex. Augmentation deeply relies on the frontoparietal network. In particular, premotor cortex is involved in learning the control of an external effector and owns the tool motor representation, while the intraparietal sulcus extracts its visual features. In these areas, multisensory integration neurons enlarge their receptive fields to embody supernumerary limbs. For operating an anthropomorphic neuroprosthesis, the mirror system is required to understand the meaning of the action, the cerebellum for the formation of its internal model and the insula for its interoception. In conclusion, anthropomorphic sensorized devices can provide the critical sensory afferences to evolve the exploitation of tools through their embodiment, reshaping the body representation and the sense of the self.

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“…Specially, the use of somatosensory feedback increases the sense of embodiment [11] and performance on grasping motions [12]. This embodiment means that the user can have an accurate idea of the position of the artificial limb without visual information.…”

Section: Introductionmentioning

confidence: 99%

Modification of body schema by use of extra robotic thumb

et al. 2018

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In recent years, there has been great interest in the possibility of using artificial limbs as an extension of the human body as well as replacement of lost limbs. In this paper, we develop a sixth finger system as an extension of the human body. We then investigate how an extra robotic thumb, that works as a sixth finger and gives somatosensory feedback to the user, modifies the body schema, and also affecting the self-perception of existing limbs. The sixth robotic finger is controlled with the thumb of the opposite hand, and contact information is conveyed via electrostimulation to the tip of the thumb controlling the movement. We conducted reaching task experiments with and without visual information to evaluate the level of embodiment of the sixth robotic finger and the modification of the self-perception of the finger controlling the system. The experimental results indicate that not only the sixth finger is incorporated into the body schema of the user, but also the body schema of the controlling finger is modified; ability of the brain to adapt to different scenarios and geometries of the body is also implied.

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Perceptual Embodiment of Prosthetic Limbs by Transcutaneous Electrical Nerve Stimulation

Cited by 48 publications

References 26 publications

An investigation into the perceptual embodiment of an artificial hand using transcutaneous electrical nerve stimulation (TENS) in intact-limbed individuals

An investigation into the perceptual embodiment of an artificial hand using transcutaneous electrical nerve stimulation (TENS) in intact-limbed individuals

Augmentation-related brain plasticity

Modification of body schema by use of extra robotic thumb

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