Comparison of firing rate input/output relations for subtractive and divisive inhibition (illustration only, not actual data).

<p><b>A</b>: Subtractive inhibition: output rate without inhibition is , and output rate with inhibition is , where <i>c</i> is a constant with <i>c</i> > 0. <b>B</b>: Divisive inhibition: output rate without inhibition is (same as in <b>A</b>), and output rate with with inhibition is , where <i>α</i> is a constant with 0 < <i>α</i> < 1.