Spectral and polarization sensitivity measurements were made at several levels (retina, first and third optic ganglion, cervical connective, behavior) of the dipteran visual nervous system. At all levels, it was possible to reveal contributions from the retinular cell subsystem cells 1 to 6 or the retinular cell subsystem cells 7 and 8 or both. Only retinular cells 1 to 6 were directly studied,...

A compressive sensing based circular polarization snapshot spectral imaging system is proposed in this paper to acquire two-dimensional spatial, one-dimensional (the right and left polarization), information by one measurement, simultaneously. The dispersed component combined with a double Amici prism Wollaston was used implement the shifting along two orthogonal directions. Theoretically, reso...

Abstract. Spectral induced polarization (SIP) measurements were collected at the Lapires talus slope, a long-term permafrost monitoring site located in western Swiss Alps, to assess potential of frequency dependence (within range 0.1–225 Hz) electrical response frozen rocks for an improved characterization. The aim our investigation was (a) find field protocol that provides SIP imaging data set...

Clay material characterization is of importance for many geo-engineering and environmental applications, geo-electrical methods are often used to detect them in the subsurface. Spectral induced polarization (SIP) a geo-electric method that nonintrusively measures frequency-dependent complex electrical conductivity material, mHz kHz range. We present new SIP data set four different types clay (a...