Figure 3. L2/3 neurons in the fmr1^−/y prefrontal cortex fire more action potentials in response to a current stimulus.

A, representative traces showing the response to a 300 pA current injection in a wild‐type (top) and fmr1^−/y (bottom) neuron. B, summary graph showing that fmr1^−/y L2/3 neurons fire more action potentials in response to increasing current amplitude compared to wild‐type neurons (wild‐type: 14 cells/7 mice; fmr1^−/y: 10 cells/6 mice). C, representative traces showing the response to a 300 pA current injection of increasing duration. D, summary graph showing that fmr1^−/y L2/3 neurons fire more action potentials in response to longer duration current injections compared to wild‐type neurons (wild‐type: 6 cells/3 mice; fmr1^−/y: 6 cells/2 mice).