Fig. 7.
Hypercapnic effects on pericentral troughs. A. A narrow pericentral trough was seen in the PEH with the reference unit CO2-stimulated and target unit CO2-inhibited. B. Hypercapnia had very little effect on the pericentral trough. C, D. Statistical analysis indicates that none of the trough/mean ratio and trough latency is affected by hypercapnia. E. The trough width at half magnitude is enhanced at PCO2 70 torr (P<0.05, n=5). Data are represented as mean ± S.D.