MATLAB Code for Spatial Frequency Response with Implementation Details

Application Background: In mathematics, physics, and engineering, spatial frequency characterizes periodic structures in space. It measures sinusoidal components per unit repetition (determined via Fourier transform), with units in cycles per meter. For image processing applications, spatial frequency is typically expressed in cycles per millimeter or line pairs per millimeter. Key Technology: Spatial frequency theory explains how visual cortex neurons encode spatial frequencies rather than simple edge detection. Experimental evidence shows stronger neuronal responses to sinusoidal gratings at specific orientations compared to edges or bars. This MATLAB implementation demonstrates spatial frequency analysis through Fourier transformation and grating response simulations.