Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
FRCs obtained by sinusoidal modulation of a mean luminance equivalent to 38.79Φ in HCN+/+ (n = 15), HCN1−/− (A, n = 17) and HCN2−/− (B, n = 12) before, and after blocker injection (12 mg/kg; n = 7/n = 6 respectively for HCN1−/− and HCN2−/−). Relative amplitude was normalized at their resonance peak. Stimulus contrast, 85%; vertical bars = SEM.
