Analysis of WT and <i>Kcnma1^−/−</i> SFR rhythms.

Spontaneous activity was analyzed from channels within the SCN that had activity >1 Hz. R = the number of rhythmic channels (in parentheses: average time of the SFR peak±s.d.). AR = the number of arrhythmic channels (% of total). N-values are presented as the number of rhythmic and arrhythmic channels from 5 WT and 4 Kcnma1−/− slices. Separate n-values (bottom of cell) are presented for peak-to-trough (PT) ratios because these values could not be extracted from every recording due to noise problems. Peak and trough frequencies were determined by averaging two hours of continuous raw data from rhythmic channels at CT 5–7 and CT 12–14, respectively. The PT ratio was calculated for each channel as (P–T)/P and is presented as the average±s.d. *, #, §, †p<0.05.