Figure 2.
Renal sympathetic nerve discharge (SND) traces from representative young (top) and aged (bottom) F344 rats recorded at control (38°C), during acute heating that increased core body temperature (Tc) to 41.5°C, and 4 min following bilateral RVLM bicuculline (BIC, 100 pmol) microinjections with Tc maintained at 41.5°C. Vertical calibration is 50 µV. Horizontal calibration is 250 ms.