Three categories of contrast response curves. A, Representative examples of each category. Cells were classified HP when fitted with a sigmoid with or without plateau (2 top rows), bandpass (BP, third row) when fitted with a Gaussian or suppressed by contrast (SC, bottom row) when fitted with a negative sigmoid. B, Fraction of cells of each category in V1 and dLGN for both states. A higher percentage of SC cells are found in V1 aw vs V1 an (20% vs 11%).