Please use this identifier to cite or link to this item: doi:10.22028/D291-29331
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Title: Friction in Passive Tactile Perception Induces Phase Coherency in Late Somatosensory Single Trial Sequences
Author(s): Özgun, Novaf
Bennewitz, Roland
Strauss, Daniel J.
Language: English
Title: IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society
Volume: 27
Issue: 2
Startpage: 129
Endpage: 138
Publisher/Platform: Institute of Electrical and Electronics Engineers (IEEE)
Year of Publication: 2019
Publikation type: Journal Article
Abstract: Event related potentials represent a noninvasive means for studying sensory and cognitive processes that occur in response to particular stimuli. Here, we report on a phase measure for estimating single trial interaction of late somatosensory potentials (LSPs) following a tribological well defined mechanical stimulation of the human fingertip. Stimuli are presented via a programmable Braille-display with actively switchable pins which was slid along the apex of the passive fingertip, i.e., the fingertip rested stationarily in a finger holding system with circular opening at the bottom. The event was the raising and the lowering of either one, three, or five lines of pins. Differences were identified by measures based on instantaneous phase synchronization to the stimuli across trials, in particular the wavelet phase synchronization stability (WPSS) measure for single trial sequences of LSPs. In particular, we show that the higher the friction the stronger and more localized the induced phase coherency is. We concluded that the WPSS analysis of single sequences of LSPs represents a reliable method which allows for the quantification of brain responses upon distinct tactile stimuli.
DOI of the first publication: 10.1109/TNSRE.2019.2891915
Link to this record: hdl:20.500.11880/28129
ISSN: 1534-4320
Date of registration: 17-Oct-2019
Faculty: NT - Naturwissenschaftlich- Technische Fakultät
Department: NT - Physik
Professorship: NT - Keiner Professur zugeordnet
Collections:UniBib – Die Universitätsbibliographie

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