Table 2.

Analysis of electropharyngeogram transients inrab-3 mutants

	Wild-type	js49	y250	y251
M3s/pump	2.5  ± 0.6	1.2  ± 0.3	0.5  ± 0.3	1.0  ± 0.4
Pump duration (msec)	123  ± 7	160  ± 17	164  ± 12	140  ± 19
Subthreshold MCs/pump	0.7	5.5	1.1	2.1
Nonsynchronous MCs/total subthreshold MCs	0.05	0.51	0.59	0.67

Data are based on at least eight worms per strain with 10 random traces per worm (trace duration = 5 sec). For analysis of M3 transients only isolated pumps with no other pumps within 200 msec were used. Each mean is presented ± SEM. Subthreshold MC activity is defined as recorded MC transients that failed to elicit a pharyngeal muscle action potential. MC activity was defined as nonsynchronous if the activity consisted of more than a single distinct transient.