Fig. 1: Representation of the e-skin and of the neuromorphic processing of tactile stimuli.
From: Bioinspired spiking architecture enables energy constrained touch encoding
a Design of the proposed system: (left) e-skin embedded with FBG sensors and spiking representations of the tactile signals; (right) die photo of the DYNAP-SE neuromorphic processor and activity of the output neurons of the spiking neural network when a punctual indentation is performed on the region of interest (ROI); b working principle of FBG transducers: local strain variations cause a shift (Δλ) in the reflected wavelength of each sensor; c, d receptive field (c) and radial sensitivity (d) of the positive (green) and negative (yellow) components of Δλ, mimicking SA1 and SA2 mechanoreceptors respectively.
