Spontaneous activity on an MEA before and after chemical LTP treatment.

<p>Each box represents one second (x-axis) of recording from one electrode and the voltage scale (y-axis) ranges from ±50 mV. A) Screen shot of spontaneous, high-pass filtered recording of baseline activity from an MEA. B) Screen shot of spontaneous, high-pass filtered recording of activity after chemical LTP performed on the MEA from panel A. In general, approximately 66% of the electrodes on each MEA displayed activity after chemical LTP (N = 4).