§10a Visual System — Gabor Filters and Orientation Tuning
G(x,y) = exp(-(x'² + γ²y'²)/(2σ²)) · cos(2πx'/λ + ψ)
The receptive fields of V1 simple cells can be described by a 2D Gabor function: a sinusoidal wave modulated by a Gaussian envelope. Different cells prefer different orientations, giving rise to orientation tuning curves.
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Parameters
rad