. Author manuscript; available in PMC: 2014 May 1.

Published in final edited form as: Microcirculation. 2013 May;20(4):281–289. doi: 10.1111/micc.12046

Table 1.

Properties of vascular smooth muscle subcellular Ca²⁺ signals (approximate values). NA = not available.

	Ca²⁺ waves (31, 61)	Junctional Ca²⁺ transients (34)	Ca²⁺ sparks (8, 26)	Ca²⁺ puffs	Ca²⁺ sparklets (3, 41)
Area (μm²)	≈ 50 μm (full-width, half maximum)	≈ 25	≈ 15	NA	≈ 1
Duration (t_0.5; ms)	NA	≈ 150	≈ 50	NA	τ1 ≈ 35 τ2 ≈150
Amplitude (F/F₀)	≈ 2	≈ 3	≈	NA	NA