Publications

Osborn, L. E., et al.,
“Cortical Response to Expectation of Tactile Stimulation from External Anthropomorphic and Non-Anthropomorphic Systems,”
2023 11th International IEEE/EMBS Conference on Neural Engineering (NER), Baltimore, MD, USA, 2023, pp. 1-4, doi: 10.1109/NER52421.2023.10123891. (Abstract, Links)

Abstract

Complete sensorimotor integration and user acceptance of a neural prosthesis relies on system embodiment –
the incorporation of an external system into one’s own body
schema and representation. Embodiment of neural prostheses is
an ambiguous concept with limited approaches for quantifying
human and machine integration in a meaningful way. In an
attempt to understand human sensory integration with external
systems, we measured neural activity in the somatosensory
cortex of a participant with chronically implanted microelectrode arrays during sensory events tied to either a virtual
robotic hand touching an object or a virtual lamp lighting up.
Sensory stimulation was delivered using either skin vibration
or intracortical microstimulation (ICMS) and was mapped
to the virtual systems. Through the brain-machine interface,
we observed quantifiable cortical activity corresponding to
tactile sensations perceived during the virtual tasks and even
during instances when neural stimulation was expected but
not delivered, demonstrating the presence of sensory-related
neural activity even in the absence of tactile stimulation. Evoked
sensory expectation signals were also observed in the motor
cortex, although at reduced amplitudes. Evoked cortical activity
corresponding to expectation of a sensory input could serve
as objective cortical markers for better understanding sensorimotor integration and perceptual experiences when connecting
humans with external systems.

BibTeX
@INPROCEEDINGS{10123891,
  author={Osborn, Luke E. and Christie, Breanne and Crego, Adam C.G. and D'almeida, Dayann and McMullen, David P. and Nickl, Robert W. and Pawar, Ambarish S. and Brown, Jeremy D. and Wester, Brock A. and Firestone, Chaz and Celnik, Pablo A. and Fifer, Matthew S. and Tenore, Francesco V.},
  booktitle={2023 11th International IEEE/EMBS Conference on Neural Engineering (NER)}, 
  title={Cortical Response to Expectation of Tactile Stimulation from External Anthropomorphic and Non-Anthropomorphic Systems}, 
  year={2023},
  volume={},
  number={},
  pages={1-4},
  doi={10.1109/NER52421.2023.10123891}}
Links

https://ieeexplore.ieee.org/abstract/document/10123891