background and objective: vep is a powerful method to study visual system via evaluating evoked potentials. technologic and instrumental restrictions may be the reason of having studies on optical modulation and induction such as color, spatial frequency and contrast. developments of computer software and hardware may lead to an increase in the flexibility of pattern designs. material and meth...

Model modulation index Figure 1 (a) An input image is convolved with a model V1 front-end with units tuned to different orientations and spatial frequencies. The first V2 stage computes derivatives over the activation map of V1 across space, as well as orientation and spatial frequency. We modelled “V2 simple cells” as the rectified output of these filters. The final V2 stage pools and rectifie...

Radio-over fiber technology (RoF) fulfills the demand of future wireless services. In this paper, simulative analysis of radio-over fiber system employing external modulation using MachZehnder modulator is carried out by considering the effect of fiber dispersion. Analytical and simulative analysis shows the periodic behaviour of system with respect to modulation index and length of the optical...

As a potential member of next generation wireless communications, the reconfigurable intelligent surface (RIS) can control reflected elements to adjust phase transmitted signal with less energy consumption. A novel RIS-assisted index modulation scheme is proposed in this paper, which named generalized (GRPM). In GRPM, bits are mapped into combination conveyed through on RIS, and detected by max...

We introduce "the modulation cepstrum," a novel representation of an acoustic signal used to distinguish speech signal and environmental noises. The modulation cepstrum was computed by taking the inverse Fourier transform of the logarithmic modulation spectrum, a spectral representation of the temporal dynamics of a sub-band. We calculated the center of gravity of accumulated the modulation cep...