Table 3.

Summary of the estimated properties of AMPA receptors in hot spots with single and multiple synapses

	Single synapse	Multiple synapses
Distance from the neighboring synapse	r > 2.3 μm	r < 2.3 μm
10-90% rise time (ms)	2.7 ± 0.7	3.6 ± 0.4
62% decay time (ms)	15.3 ± 3.2	17.8 ± 2.0
Single-channel conductance (pS)	8.0 ± 1.1	11.6 ± 1.1
Number of AMPA receptors	154 ± 56	90 ± 6
Peak open probability	0.57 ± 0.08	0.60 ± 0.05
Density of AMPA receptors (/μm2)	1630 ± 190	—
Number of samples	3	5

Values were not corrected for RC filtering and are expressed as mean ± SEM. The density of AMPA receptors was estimated only from single synapses.