Table 4.

Comparison of efferent-mediated excitation in calyx versus dimorphic afferents

Unit	n	Normalized coefficient of variationa	Background discharge (sp/s)a	Peak exitation (sp/s)b	Mean T100 (sp/s)c	Half-width (s)d	Duration (s)e
Calyxf	29	0.7621 ± 0.0267	19.3 ± 2.0*	61.8 ± 4.4*	54.7 ± 4.3*	0.383 ± 0.023	1.071 ± 0.058*
Dimorphicf	29	0.7061 ± 0.0235	25.7 ± 2.3	46.9 ± 3.1	40.1 ± 2.9	0.477 ± 0.040	1.376 ± 0.071

^aNormalized coefficient of variation and background discharge were calculated from 5 s α period devoid of any efferent stimulus.

^bPeak excitation was taken from the first 50 ms bin of the average response histogram.

^cMean efferent-mediated excitation during the first 100 ms interval immediately following the efferent shock train (20 shocks at 200/s).

^dTime it took the response to return to half the peak excitation.

^eTime it took the response to return to background.

^fStatistical test for unit response properties, unpaired t test for calyx versus dimorphic. For all statistical tests, asterisks indicate level of significance:

*p < 0.05; **p < 0.01.