Table 1.

Kinetics and basic membrane properties of IPSCs are not modified by learning

	Naive rats (n = 36)	Trained rats (n = 57)	Pseudo-trained rats (n = 37)
IPSC rise time, ms	2.59 ± 0.51	2.55 ± 0.48	2.57 ± 0.60
IPSC decay time, ms	16.22 ± 3.64	15.47 ± 3.77	14.95 ± 3.45
Response to −5 mV step, pA	12.50 ± 6.25	14.04 ± 9.43	11.48 ± 5.82
rms noise, pA	1.9 ± 0.38	2.02 ± 0.41	1.84 ± 0.31

Data are the mean ± SD. Rise time was measured for each detected event from baseline to peak. Decay time was measured for each detected event from peak to one third of the amplitude of the event. The basic membrane properties of neurons in which IPSCs were recorded are shown in the two bottom rows. The current response to a 100 ms voltage step of −5 mV was evoked at 0.16 Hz. The rms noise was measured from 500 ms baseline recordings in which no spontaneous events were detected. No significant differences were found between groups in all the above parameters. n, Number of neurons.