Figure 10.

HVC_X recordings as a function of variable tutor exposure: Top, Voltage traces of HVC_X neurons recorded with 0, 5, and 10 d of tutor exposure before recording. Features that changed as a consequence of increased tutor exposure included a decreased sag ratio and rebound depolarization and diminished rebound spike ratio. There was also an increase in the onset spike latency for moderate current injections. Bottom, Simulations of biophysical models calibrated to the experimental traces with current pulses of ±200 pA. The models predict that tutor exposure results in several parameter changes, as discussed in the Results.