From the conduction studies of ulnar nerve on normal individuals of different age groups and sexes the residual latencies were determined. The age has no influence on the residual latency. But the values of residual latency decreased significantly in the case of females as compared with males.
Dorsal hippocampal lesions in adult female rats leads to alteration in the estrus cycle with preponderance of estrus phase. The activity of the animals after the lesion increases, but it remains coupled with post lesion estrus cycle.