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|Title:||Friction in Passive Tactile Perception Induces Phase Coherency in Late Somatosensory Single Trial Sequences|
Strauss, Daniel J.
|Title:||IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society|
|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|
|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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