Comparison of differences between Z− and Z+ regions by region and anesthetic.

<p>(A) Summary of values for each parameter that was analyzed. The format is Z−/Z+. Global section gives the medians for the entire populations for the three data sets where somatic recordings were obtained. The Regional section provides data for each of the lobules where enough Z+ and Z− cells were recorded to make a comparison. K/X: ketamine/xylazine, U: urethane. cIIa: crus IIA, VIII: vermis lobule VIII, PM: paramedian lobule. SS FR = SS average firing rate; SD, CV = SD and CV of the SS ISI distribution; Pause: the median post CS-pause in SS activity; NPause = the normalized pause in SS activity (mean Pause/mean SS ISI); PPause = increase in SS firing rate within 100 ms post-PC; a: 16 A2 cells included for most of the measurements except CS FR, for which 18 A2 cells were included, because 2 PCs in the A2 zone had no SS activity; (B) Summary of the direction and significance of the difference in parameter values between Z− and Z+ bands. The > and < symbols indicate cells in Z− regions have a larger or smaller value for each parameter, respectively. **: P<0.01; *: 0.01Methods.