Fig. 6

Schematic of stretching. The assumed unadapted firing rate, \(f_{0}(I) = 30 \sqrt{0.5 I}\) (black, solid) and the adapted firing rate, \(f_{\infty}(I) = f_{0}(I - A(I))\), where \(A(I) = 0.6 I\) (gray, dashed). The horizontal dashed line is equal in length to \(A(I)\), indicating that \(f_{\infty}\) is \(f_{0}\) shifted by \(A(I)\) (\(I = 5\) shifted back to \(I = 2\)). Thus, \(f_{\infty}(I)\) can be viewed as a stretched version of \(f_{0}(I)\)