Sensory stimulation enhances functional connectivity towards the somatosensory cortex in upper limb amputation

Keqin Ding, Andrei Dragomir, Rohit Bose, Luke Osborn, Manuel Seet, Anastasios Bezerianos, Nitish Thakor

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Sensory stimulation elicits sensations in the phantom hand of individuals with upper limb amputation. The reinstated sensory information is important to improve phantom limb perception and motor performance. In this work, we aimed to characterize the cortical impact of sensory stimulation on sensorimotor integration in upper limb amputees. To this goal, we investigated dynamic functional connectivity computed from electroencephalogram (EEG) recorded while amputees executed phantom hand movements with and without sensory stimulation. We focused on the dynamic functional connections to the somatosensory system and discovered that non-invasive sensory stimulation induced increased speed of information transfer, shown by decreased temporal distance, and increased number of connections from the motor, somatosensory, and multisensory processing systems. We show that the cortical impact of sensory stimulation is manifested not only through functional activities related to the primary somatosensory system, but also those involving the secondary somatosensory system.

Original languageEnglish (US)
Title of host publication2021 10th International IEEE/EMBS Conference on Neural Engineering, NER 2021
PublisherIEEE Computer Society
Pages226-229
Number of pages4
ISBN (Electronic)9781728143378
DOIs
StatePublished - May 4 2021
Event10th International IEEE/EMBS Conference on Neural Engineering, NER 2021 - Virtual, Online, Italy
Duration: May 4 2021May 6 2021

Publication series

NameInternational IEEE/EMBS Conference on Neural Engineering, NER
Volume2021-May
ISSN (Print)1948-3546
ISSN (Electronic)1948-3554

Conference

Conference10th International IEEE/EMBS Conference on Neural Engineering, NER 2021
Country/TerritoryItaly
CityVirtual, Online
Period5/4/215/6/21

ASJC Scopus subject areas

  • Artificial Intelligence
  • Mechanical Engineering

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