Fig. 8.

Correlation of the number of surviving neurons in the vSPZ with the circadian index of body temperature, sleep, and locomotor activity. For sleep and activity, there was a significant (p < 0.05) linear correlation of circadian index with the number of surviving neurons in the vSPZ, whereas the circadian index of body temperature did not show a significant correlation (p > 0.05), suggesting that alterations of body temperature rhythm may have been caused by the lesions including tissue beyond the vSPZ counting box.