Valenza, G and Greco, A and Citi, L and Bianchi, M and Barbieri, R and Scilingo, EP (2016) Inhomogeneous Point-Processes to Instantaneously Assess Affective Haptic Perception through Heartbeat Dynamics Information. Scientific Reports, 6 (1). creators-Citi=3ALuca=3A=3A. DOI https://doi.org/10.1038/srep28567
Valenza, G and Greco, A and Citi, L and Bianchi, M and Barbieri, R and Scilingo, EP (2016) Inhomogeneous Point-Processes to Instantaneously Assess Affective Haptic Perception through Heartbeat Dynamics Information. Scientific Reports, 6 (1). creators-Citi=3ALuca=3A=3A. DOI https://doi.org/10.1038/srep28567
Valenza, G and Greco, A and Citi, L and Bianchi, M and Barbieri, R and Scilingo, EP (2016) Inhomogeneous Point-Processes to Instantaneously Assess Affective Haptic Perception through Heartbeat Dynamics Information. Scientific Reports, 6 (1). creators-Citi=3ALuca=3A=3A. DOI https://doi.org/10.1038/srep28567
Abstract
This study proposes the application of a comprehensive signal processing framework, based on inhomogeneous point-process models of heartbeat dynamics, to instantaneously assess affective haptic perception using electrocardiogram-derived information exclusively. The framework relies on inverse-Gaussian point-processes with Laguerre expansion of the nonlinear Wiener-Volterra kernels, accounting for the long-term information given by the past heartbeat events. Up to cubic-order nonlinearities allow for an instantaneous estimation of the dynamic spectrum and bispectrum of the considered cardiovascular dynamics, as well as for instantaneous measures of complexity, through Lyapunov exponents and entropy. Short-term caress-like stimuli were administered for 4.3?25?seconds on the forearms of 32 healthy volunteers (16 females) through a wearable haptic device, by selectively superimposing two levels of force, 2?N and 6?N, and two levels of velocity, 9.4?mm/s and 65?mm/s. Results demonstrated that our instantaneous linear and nonlinear features were able to finely characterize the affective haptic perception, with a recognition accuracy of 69.79% along the force dimension, and 81.25% along the velocity dimension.
Item Type: | Article |
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Subjects: | H Social Sciences > HA Statistics Q Science > Q Science (General) |
Divisions: | Faculty of Science and Health Faculty of Science and Health > Computer Science and Electronic Engineering, School of |
SWORD Depositor: | Unnamed user with email elements@essex.ac.uk |
Depositing User: | Unnamed user with email elements@essex.ac.uk |
Date Deposited: | 22 Jul 2016 14:09 |
Last Modified: | 23 Oct 2024 05:12 |
URI: | http://repository.essex.ac.uk/id/eprint/17291 |
Available files
Filename: srep28567.pdf
Licence: Creative Commons: Attribution 3.0